Why do the old leaves fall off and the tender buds are burnt after the osmanthus tree is transplanted?

It's just reprinted. It's a little long. But it will still help you.

Daphne odora (also called Senecio scandens) in Phnom Penh

Chinese name: Daphne odora, Phnom Penh

Alias: Penglai flower, romantic tree

Daphne of Daphne.

Origin: China, distributed in the provinces south of the Yangtze River.

Habit: Daphne odora, evergreen shrub, up to 2 meters high. Its branches are slender, smooth and hairless; Leaves alternate, rectangular, entire; Flower heads, born at the top of branches, have white, purple and red pulp-like fruits, red and round. It blooms in winter and spring and has a strong aroma. Its varieties are Daphne odora, Daphne Blanca and Daphne Rosa.

Daphne odora in Phnom Penh is famous for its excellent appearance, color, fragrance and rhyme. It has high ornamental value and medicinal value. Its roots, stems, leaves and flowers can be used as medicine. Its flowering period coincides with the beginning of the new year. When people celebrate the Spring Festival, there are flowers everywhere, clusters of flowers, full of fragrance, refreshing, making the festival more jubilant, in line with people's good wishes of "full of breath" and "blooming with wealth".

Daphne odora, also known as Senecio scandens, Penglai flower and dew nail, is an evergreen shrub. Plants are as high as 1 to 2 meters, and the branches are smooth and hairless. Simple leaves alternate, oblong to oblanceolate, 5-8 cm long, entire, glabrous, thick, dark green, shiny, and short petiole. Perianth is tubular, 4-lobed at the end, about 65438 0.5 cm in diameter, with white or purple flowers and rich fragrance. The flowering period is from March to April. Drupe is fleshy, spherical, red at maturity and ripe in July. There are about 95 species of Daphne in the world, and 35 species in China. At present, there are nine kinds of gardens widely cultivated. Daphne odora in Phnom Penh has a golden leaf margin, with five white petals at the top and a purple base, which smells like cloves. It blooms from the end of 1 to the beginning of February and becomes a beautiful flower in the Spring Festival. Its flowers are deciduous shrubs, with a height of 0.5 to 1 m, and bloom before the leaves open. Daphne odora is an evergreen shrub with white and fragrant flowers. The plant height in Huang Ruixiang is below 1m, and leaves fall in winter. The flowers are yellow and hairy, with 3-8 flowers clustered on the branches and a little fragrance. Daphne odora in Phnom Penh is an evergreen shrub with yellow-green leaves, dull and slightly concave tips, and the edges are rolled outwards. The flowers are pale purple outside and white inside, and the diameter of the disk is 2 cm. Maoruixiang, also known as Golden Dragon with Eight Claws, has yellow silk hairs on the outside of perianth, white and fragrant flowers, and the fruit is orange when it is ripe. Daphne odora in Phnom Penh, also known as Daphne odora, has white perianth lobes and pink surface. Pale red Daphne, dark green leaves and purple flowers. Daphne odora in Phnom Penh, Gansu Province is an evergreen shrub. The corolla is light purple or purplish red on the outside and white on the inside, which is fragrant and fruity.

land

1. It doesn't matter, as long as loess is added, it will harden more or less, and so will mine, so I often use a knife to loosen the soil. Daphne odora in Phnom Penh needs slightly acidic soil. After you take out the pot, if the pot soil is too hard and hardened during the normal growth period, you can pour some diluted ferrous sulfate with a concentration of 2%, which can also prevent the yellow leaves of Daphne odora in Phnom Penh.

2. Daphne odora in Phnom Penh is suitable for growing in fertile, moist and well-drained acidic soil, and it is afraid of rain, waterlogging and salinity.

3. Change the basin every 2-3 years. Pots can be changed indoors in March. The soil in the basin should be slightly acidic soil, and the hoof pieces should be put into the bottom of the basin as the base fertilizer.

4. After flowering every three years, turn over the pots and cut off the rotten roots. Stay in the soil and don't move the roots too much. It is suitable to use acidic soil mixed with yellow mud and humus soil.

5. The soil in the basin is mainly neutral and slightly acidic sandy soil. If you are close to the Yangtze River, you can take river sand and river sand from the shore during the dry season in winter. Where there is no river, red sand or red sand from foundry can be used. In addition, 40% humus soil, pine needle soil, peat soil, rice husk ash and the like should be added. Do not use base fertilizer in basin soil, but apply liquid fertilizer in time. The liquid fertilizer is soybean water (soybeans are ground or boiled for at least one year). Soybean is best mixed with potassium dihydrogen phosphate water (high-efficiency and quick-acting phosphorus and potassium fertilizer, crystal particles are diluted with 1000 times of water).

6. Soil is fundamentally related to the growth of Daphne odora in Phnom Penh, because it needs a variety of nutrients, has good air permeability and has no bacteria. Aromatic plants with fleshy roots are very harmful to bacteria. If they are not careful, they will rot their roots or stems. So the requirements for soil are very strict. The soil cultivated by Daphne odora in Phnom Penh is divided into three layers: upper, middle and lower. The upper layer is made of pond mud, let it dry thoroughly, then put dry wood to burn it thoroughly, and don't break it, so as to avoid rain and shallow mud on leaves and prevent stem rot. The middle layer is decomposed with firewood, steamed in a steamer, and then the PH value is measured with a wide range test paper, and the PH value is between 6 and 7. If the pH value is greater than 7, it is prepared with acetic acid or ferrous sulfate to make it weakly acidic. Then dried in the sun and added with 5% bone meal, which avoids the introduction of bacteria, has good air permeability and contains phosphorus, potassium fertilizer and trace elements needed for growth. Clean coal cinder is used in the lower layer, which is easy to absorb water and the basin soil is easy to dry, which is beneficial to the growth of Daphne odora in Phnom Penh. According to this method, you can usually succeed.

water

1. Daphne odora likes to grow in a moist and waterloggless soil environment, and the suitable soil humidity is about 75%. Soil moisture; 90% will cause root rot.

2. There are many rainy days at the turn of spring and summer, and the air humidity is high. Pay attention to drainage and rain protection for a long time; In summer, the temperature is high, the evaporation is large, the basin soil is easy to dry, and it should be watered sooner or later; In spring and autumn, there is water in the morning or afternoon, and at noon in winter. Maintaining suitable soil moisture is the key to the normal growth and development of Daphne odora.

3. In summer, put it in a semi-shady place to avoid the rain, and don't rain heavily, otherwise it will easily rot the roots.

4. Waterlogging means that the water can't be discharged for a long time, and the root system has been flooded and can't breathe, which is easy to cause the root system to fall off. Therefore, each flowerpot has air holes to discharge excess water, so that the soil in the pot will not be waterlogged.

But the basin soil that has just been watered should be wet. Winter may get wet in a few days. Because of the low temperature, in summer, most of the water will evaporate except the roots, so the basin soil will dry faster.

6. Daphne odora in Phnom Penh is in a semi-dormant state in summer, so it should be watered less and placed in a cool place. I put it on the north balcony with a roof and good ventilation. When the topsoil is dry and the leaves droop a little, sit in the basin and water it (watering is always at night). When it is very hot, spray some water on the leaves at night, and don't worry about her when it rains or cloudy. Now it looks like a good reference.

7. Water the drought-resistant things less. The soil should be loose. In a few minutes, you will be in trouble, and Ye Wei is hopeless. Don't spare water, put it in the shade and wait for a miracle.

8. Potted Daphne odora in Phnom Penh, summer management is very important. The flowerpot should be placed in a well-ventilated shade to avoid rain, direct sunlight and hot air. Water should be used both wet and dry, and water should be sprayed on leaves to cool down in summer. Daphne odora in Phnom Penh is not cold-resistant. Before winter, it must be moved indoors and placed in a sunny place, and the room temperature should be kept above 8 degrees.

9. Water should master the principle of dryness and wetness. Especially in summer, the temperature is high, the air is dry, Daphne odora in Phnom Penh is in a semi-dormant state, and the basin soil is slightly dry. However, the relative humidity of the air needs to be slightly higher, so it is necessary to spray water on the blades 1-2 times a day, and sprinkle water around to humidify. Water less in Mid-Autumn Festival, which will stop the growth of summer shoots and promote the differentiation of flower buds.

At the same time, we should pay attention to reasonable lighting and ventilation conditions, do a good job in overwintering management and pest control, and do not move flowerpots during flowering.

obese

1. Prune after flowering and apply fertilizer every half month to promote multi-branching.

2. The maintenance of Daphne odora in Phnom Penh should apply phosphorus and potassium fertilizer, and avoid applying nitrogen fertilizer such as urea to avoid the degradation of Phnom Penh.

3. Potted Daphne odora in Phnom Penh should be "thin and diligent, eat less and eat more meals", mainly liquid fertilizer. These include:

Small seedling stage: thin fertilizer, diligent application, eat less and eat more meals.

Middle seedling stage: apply more nitrogen and potassium fertilizer in early spring, every 10 ~ 15 d 1 time; From late May to the end of June, phosphorus and potassium fertilizer were mainly applied; In the high temperature season from July to August, apply as little or no fertilizer as possible; From late August to the end of 10, NPK compound fertilizer was applied; When the flower buds expand in February, the application of 1 ~ 2 times phosphorus and potassium fertilizer can make the flowers bigger, better in color, stronger in fragrance and longer in flowering period. Fertilization should be stopped at flowering stage. Generally speaking, the suitable fertilization concentration in the middle stage of seedling stage should be 10% ~ 15%.

Large seedling stage: Because the seedlings are planted in tanks, the soil is large and the nutrient supply is large, so it is enough to apply fertilizer several times in early spring, early summer and late autumn respectively.

4. Daphne odora in Phnom Penh is not tolerant of thick fertilizer. When planting, decomposed cake fertilizer and calcium superphosphate are used as base fertilizer, which can basically meet the requirements of growth stage. Fertilization during dormancy is not easily absorbed by plants, which easily leads to the phenomenon of no flowering and no new buds in that year. After budding, 1/2MS nutrient solution or other diluted fertilizers can be applied 2 ~ 3 times a month, and the principle of applying thin fertilizers frequently should be adhered to. Do not use undercooked human excrement, and use less urea. From 60 days before flowering to the flowering stage, the fertilization concentration can be appropriately increased, and 3ml edible rapeseed oil or sesame oil can be applied at three points 5cm away from the main root, and the effect is good. Spraying potassium dihydrogen phosphate with the concentration of 100mg/L at flowering stage can prolong flowering stage. All fertilization time should be chosen in the morning and evening or when the weather is cool.

Daphne odora can be planted in spring and autumn in the south. Generally mixed with deciduous shrubs, it can avoid sun exposure in summer and get sufficient sunshine in winter. When planting, compost or manure can be applied in the hole as the base fertilizer, not too much. Topdressing can be applied 1-2 times in the growth process. In winter, you can ditch around plants and fertilize them, instead of applying human excrement and urine.

6. Potted Daphne odora in Phnom Penh should be kept semi-dry and semi-wet, and fertilizer should be applied once in spring and autumn. In spring, in the germination stage, 30% decomposed bean cake and chicken manure are mixed with liquid fertilizer; Autumn is in late September, and the fertilizer concentration should be light.

7. Strengthen fertilizer and water management: stop root fertilization in July and August, but it can be combined with watering or spraying 0.3% potassium dihydrogen phosphate solution on leaves for 2-3 times to promote strong branches and thick leaves; At the beginning of September, topdressing potassium dihydrogen phosphate solution every 10 day to promote flower bud differentiation and bud pregnancy; Spraying 0.3% potassium dihydrogen phosphate solution 1 time on leaves every month in winter can improve the cold resistance of plants, promote early flowering, and promote large, bright and long flowering. Stop fertilizing after flowering.

light

1. Daphne odora in Phnom Penh should be kept half cloudy and half sunny, not in direct sunlight. Be careful not to cover the nodes on the roots with soil when planting, and Daphne odora in Phnom Penh should not be too wet, but the air humidity is required. The root of Daphne odora in Phnom Penh is sweet, so pay attention to insect prevention.

2. liking half shade means having half sunshine without strong light. Put it in a sunny place at home and have 3-6 hours of light every day. The temperature is suitable this season, and you can still receive more light to help you grow.

3. As long as the environment is suitable, it is advisable to put it in places, balconies and rooms that do not accept strong light.

Daphne odora in Phnom Penh is a flower that likes temperature and avoids high temperature. More drought-tolerant. Winter and spring maintenance should be sunny, and the temperature can be around 10 degrees.

5. Daphne odora in Phnom Penh began to germinate and grow when the average daily temperature rose to 65438 00℃ in spring. The optimum growth temperature is 15 ~ 25℃. In this range, the plants grow rapidly, and the seedlings can grow 1 leaf in 7 ~ 10 days. The lowest temperature Daphne odora in Phnom Penh is -3℃, and the average daily temperature is: At 35℃, the growth of Daphne odora in Phnom Penh stopped or slowed down.

6. Daphne odora is a hi-negative plant. When the sun is too strong, especially when the temperature is above 35℃ and there is strong direct sunlight, the leaves are easy to be burned. In summer, the temperature is high and the light is strong, so we should choose a ventilated place to build a shade shed and put the potted Daphne odora in the shed (about 50 cm from the ground).

Shading treatment 1 month in mid-July, with shading rate of 75%, can control the flowering period before and after the Spring Festival. If the flowers bloom before New Year's Day, the illumination time can be extended, and the daily illumination can be kept at 10 h for 3 months. If the flowers bloom before the National Day, the daily light should be kept at 15 h for 2 months. If the shading time is postponed to September, the shading rate is 85%, and the flowering period can be postponed to April and May of the following year.

8. Increasing the temperature can make Daphne odora bloom ahead of time, and lowering the temperature can make Daphne odora bloom later. When the temperature is 20℃, flower buds can be formed in 60 days. After bud formation, with the increase of temperature, the days from bud emergence to flowering tend to shorten. If the temperature is 2 1 ~ 25℃, it takes about 90 days from budding to flowering. If the temperature is between 26℃ and 30℃, it only takes about 70 d from budding to flowering. In the low temperature environment below 10℃, Daphne odora with flower buds can be delayed by 100 d, and if it is controlled below 4℃, the flowering period will be delayed by about120 d.

9. The control of Daphne odora in Phnom Penh should generally start from the end of May, gradually reduce the light time and control fertilization. That is, there is a transition from short-term shading to long-term shading, and the soil remains moist. During the period of flower control, it is forbidden to dry the soil moisture, otherwise the perianth will be short, dry and lifeless, and the bracts will not roll up easily, and will wither early. Even if the light and water are increased in the future, the assimilation of plants is difficult to recover. Under normal circumstances, in spring and summer, the accused big flower seedlings usually add water to the pot soil from 1 month to increase the light so that they can receive dew at night. After a period of assimilation, the leaves will become shiny and straight, the perianth will turn red, and the flowers will bloom during the Spring Festival, making Daphne odora in Phnom Penh beautiful and fragrant.

10. Flower promotion refers to the measures to delay the flowering of Daphne odora (a small number of autumn shoots) in Phnom Penh due to factors such as late pruning, improper application of fertilizer and water or insufficient light. The main methods are: keeping the soil moist, increasing phosphate fertilizer, spraying potassium dihydrogen phosphate and growth hormone, such as plant protection agent, Lubokang, Spraying Bao and Aiduobao.

1 1. Daphne odora in Phnom Penh is not tolerant of concentrated fertilizer. When planting, decomposed cake fertilizer and calcium superphosphate are used as base fertilizer, which can basically meet the requirements of growth stage. Fertilization during dormancy is not easily absorbed by plants, which easily leads to the phenomenon of no flowering and no new buds in that year. After budding, 1/2MS nutrient solution or other diluted fertilizers can be applied 2 ~ 3 times a month, and the principle of applying thin fertilizers frequently should be adhered to. Do not use undercooked human excrement, and use less urea. From 60 days before flowering to the flowering stage, the fertilization concentration can be appropriately increased, and 3ml edible rapeseed oil or sesame oil can be applied at three points 5cm away from the main root, and the effect is good. Spraying potassium dihydrogen phosphate with the concentration of 100mg/L at flowering stage can prolong flowering stage. All fertilization time should be chosen in the morning and evening or when the weather is cool.

fixed

1. Daphne odora plastic surgery in Phnom Penh is to make it sprout early, grow more branches from small seedlings to large seedlings, and form 1 tree with large crown, reasonable branch configuration, lush foliage and high ornamental value in advance by taking measures such as removing core, wiping buds, thinning branches, binding and pulling branches.

2. Seedling-raising: mainly removing the core and smearing buds, and cultivating 2-3 branches and 6-9 secondary branches.

3. Middle-seedling shaping: By pinching and smearing buds, more stout branches are cultivated, the crown of branches is enlarged, and more flowers are produced during the Spring Festival.

4. Daphne odora has strong germination ability and is resistant to pruning. Pay attention to pruning long branches and leaves in summer.

5. By pruning in summer, Daphne odora in Phnom Penh can make its first flowers bloom in late June of 65438 10 and wither at the end of February. The second batch of flowers began to bloom at the end of February and withered at the beginning of April, and the flowering period lasted for more than two months, which was about 1 times longer than that of conventional cultivation.

6. Pruning in summer: Using the characteristics of Daphne odora in Phnom Penh, which is resistant to pruning and has strong top advantage, the pruning method of removing the top to promote germination is adopted. From June to July, some new shoots or 1/2 new shoots are cut off in stages (the cut branches can be used for water insertion or soil insertion) to promote the lateral buds under the incision to sprout new shoots.

7. The edge buds of Daphne odora in Phnom Penh undergo flower bud differentiation and bud pregnancy after autumn, while the uncut spring shoots undergo flower bud differentiation and bud pregnancy after autumn, while the pruned summer shoots do not stop growing in early autumn and flower bud differentiation is late, thus prolonging the flowering period.

8. Modeling Daphne branches are soft and easy to shape. After flowering, wrap the branches with thin lead wire, with one upright as the trunk, and the rest horizontally flattened and evenly distributed, leaving about 8 cm for pruning. Soon, two or three lateral branches will be drawn from each branch. After flowering in the second year, each branch is pruned about 6 cm, and after pruning and climbing twice, a hemispherical plant can be formed.

insert

1. Because the pistils and stamens of Daphne odora are easy to degenerate, it is difficult to reproduce by seeds, so it is generally asexual. That is, using the regenerative ability of its vegetative organs to form new individuals. At present, cutting propagation is mainly based on tender branches (semi-lignified branches of that year).

2. Cutting time: March to165438+1October, and May to June is the best cutting time.

Seedbed setting: loose, heat-insulating, moisture-retaining and breathable soil should be selected as the planting substrate.

Seedbed setting: loose, heat-insulating, moisture-retaining and breathable soil should be selected as the planting substrate.

Selection of cuttings: 1) 1 ~ 3-year-old seedlings are the best for mother trees; 2) The cuttings should be semi-lignified branches of the same year; 3) Cuttings with strong axillary buds and no pests and diseases should be selected; 4) Daphne odora branches in Phnom Penh should be cut into about 6 cm, and it is advisable to leave 4 ~ 8 leaves. The cut branches should be treated immediately and should not be left for too long, so as not to lose water and affect the survival rate.

Cutting treatment: dip vitamin B 12 liquid medicine directly in the base of the cut, and insert it into the substrate immediately after the medicine is dry.

Cutting: Before cutting, the substrate on the bed board should be leveled and slightly compacted, and then soaked and disinfected with 1‰ potassium permanganate solution. In general, the best cutting density is 6 cm×6 cm.

3. Potting: When the roots of the seedlings in the seedbed are 3 ~ 5 cm long, they should be transplanted into the pot.

4. Changing pots: With the growth of plants, the extension of roots is easily blocked, and the original pot soil is less and the nutrient supply is limited, which cannot meet the needs of plant regrowth. It is necessary to replace the big basin and increase the amount of soil. Pot changing time can be carried out all year round, but the best pot changing time is 165438+ 10 to February of the following year.

5. Water plug. Water injection is usually carried out in summer, when the new branches tend to mature, which is a good season for water injection. Water-inserting method takes root quickly and has a high survival rate (almost 100%), which can reduce the number of water spraying. The specific method is: take annual branches with a length of 8- 12 cm. It is best to cut a circle with a sharp knife at the branch point of 1-2 mm the day before cutting (scissors must not be used), which can accelerate healing and rooting. After girdling at the branch point, smooth the wound, remove the leaves in the lower part of the branch, keep 3-4 leaves in the upper part, and cut off the rest. Then put it in a jar prepared in advance. Fill the bottle with about 3/4 water and drop 2-3 drops of vinegar. The cuttings are about 1/3 in water, straightened and fixed. Cover the bottle mouth with gauze and tie it tightly. Insert it and put it on the indoor windowsill. When the water volume decreases, add water to the original water level. Spraying water on the leaves 1-2 times in about 5 days, changing water once a week, and rooting within one month. Transplanted into the pot in time.

6. Shoot cutting. Buds should be cut before germination in spring. Cuttings should be full and strong branches in the middle and upper part of the crown, leaving a leaf on the upper part. There should be obvious bud points in bud axils, and it is better to cut one leaf and one bud. When picking the ear, you must cut it from the upper part of the axillary bud with a sharp knife, cut it obliquely and cut it into the shape of a horse's ear. Be careful not to damage axillary buds, so as to facilitate rooting and germination. Using loose soil and 30% fine sand as cutting substrate is convenient for the insertion and fixation of short cuttings. It should be noted that the loose soil and fine sand substrate must be exposed to the sun for disinfection before cutting. When cutting, insert 1/2 into the soil, compact after cutting, sprinkle a little water and keep it moist, and take root and survive in about 40 days. After the new branches were born, they were transplanted into pots in the following spring.

disease

1. The main diseases that harm Daphne odora in Phnom Penh are stem rot, mosaic and anthracnose, and the pests are aphids, scale insects and earthworms. The pest control of Daphne odora in Phnom Penh should be comprehensively controlled from the following aspects:

2. Strengthen the management of flower beds, strictly control the spread of pathogens in flower beds, improve the hygiene of flower beds, and eliminate the source of protozoa.

3. Scientific application of chemicals: 1) seedbed application. Soak thoroughly with 1‰ potassium permanganate solution before cutting; 2) Disinfect Daphne odora seedlings and soil in Phnom Penh when transplanting, and drench the soil with 500 times of liquid; 3) Spray medicine in time in each pumping cycle.

4. Daphne odora in Phnom Penh is best to change pots in spring. Potted earthworms can be treated with carbofuran and trichlorfon powder, and special soil pesticides can also be used. . . Carbofuran, very cheap, the effect is wonderful. Sprinkle a little, cover it with thin soil, spray water or water it, and the bugs in the soil will die. But carbofuran is a highly toxic pesticide, so it is best not to use it indoors. The balcony or corridor should be fine, or you can leave it there for the night and take it home.

5. Daphne odora in Phnom Penh is prone to red spiders, aphids and scale insects in hot and dry weather in summer, and can be sprayed with 1000- 1200 times dimethoate EC. In addition, Daphne odora root in Phnom Penh is sweet and easy to hide earthworms. Too many earthworms will entangle the roots of Daphne odora in Phnom Penh, affecting the absorption of water and nutrients. You can dig up plants, remove earthworms and replant them. The disease is mainly caused by virus mosaic. After infection, spots and deformities will appear on the leaves of plants, leading to poor flowering and stagnant growth. If this virus infection is found, it is necessary to add roots, dig out the plants and destroy them.

Daphne's Four Likes and Dislikes

The wild Daphne odora in Phnom Penh is carefully cultivated by flower farmers. Horticultural varieties are: Daphne odora, Daphne rubra, Daphne viola, Daphne Huang Ruixiang, Daphne odora with mixed colors of red, white, purple and yellow, and Daphne odora with edges of leaves. Among them, Daphne odora in Phnom Penh is the most precious, and there is a saying that "peony flowers are beautiful and Daphne odora in Phnom Penh is the best". The key points of Daphne odora cultivation and management in Phnom Penh are four "likes, loves, wants and taboos". Suitable for growth at gas temperature of 15-25℃: below 15℃, covered with plastic film, and kept warm and moist; Above 25℃, it is necessary to build a shed for shade, so as to grow rapidly and healthily. The four meanings of "happiness, love, need and taboo" are: first, I like warmth, love ventilation, semi-dry and semi-wet, and avoid too much water; Second, I like medium acidity, love loose loam, plant shallow soil, and avoid deep planting. Third, I like astigmatism, love long light, think of half yin and half yang, and avoid strong light. Sixi NPK, love base fertilizer, need to apply thin fertilizer frequently, don't touch flowers with fertilizer.

Summer cultivation of Daphne odora in Phnom Penh

Summer is hot and the temperature is high, which is the frequent season of Daphne odora pests and diseases in Phnom Penh. In order to prevent and reduce the occurrence and harm of pests and diseases, management should be strengthened and the following work should be done well: First, potted flowers cultivated in the open air (without a shed) should be moved into a greenhouse (with a shed) for cultivation management to prevent heavy rain from scouring and waterlogging. Second, the second plastic molding should be carried out according to the requirements of mushroom crown shape. Thirdly, the potted plants should be rearranged loosely to facilitate ventilation. Fourth, timely remove weeds in old leaves and pots, improve the environmental sanitation around flower beds, and avoid the spread of pathogen infection. Fifth, we should do a good job of cooling potted plants to prevent direct exposure to strong light. We need to add a movable sunshade net with a shading rate of 90% in the shed, which will be opened in the morning and evening and covered when the light is strong and the temperature is high. Sixth, we should distinguish different potted flowers and adopt the same water and fertilizer management. For potted flowers more than three years old, we can control water, fertilizer and light to inhibit the germination of branches and the growth of leaves from vegetative to reproductive. After it is transformed into reproductive growth, the pot soil can be a little dry, and it can be watered thoroughly without watering, and the fertilization can be less, with phosphorus and potassium fertilizer as the main factor and less nitrogen fertilizer. Pot flowers should continue to grow and develop, water and fertilizer can be more diligent, pot soil should be kept moist, but not too wet and waterlogged, fertilization can be more diligent, and nitrogen fertilizer can be more. Seventh, it is necessary to strengthen pest control and inspection. When the temperature rises above 30℃, it is necessary to adhere to the combination of fertilization or watering every 18 days-15 days, and add dichlorvos or thiophanate-methyl to the fertilizer water to irrigate the roots to prevent the occurrence of stem rot. In summer, aphids and scale insects are the main hazards, so it is necessary to strengthen inspection. Once found, they should be culled in time and strangled by hand to prevent their reproduction and spread. If the amount is large, 40% omethoate 1000 times solution or 80% dichlorvos 1500 times solution can be killed.

Winter maintenance of Daphne odora in Phnom Penh;

Daphne odora in Phnom Penh is deeply loved by families for its rich fragrance, beautiful plant shape and beautiful leaf color. Legend has it that there was a monk in Lushan who slept on a rock during the day and was awakened by a strong incense in his sleep. Later, he discovered a flower plant named "Sleeping Fragrance". Because it blooms around the cold Spring Festival, people think it is auspicious and rename it "Daphne". The flowering period of Daphne odora in Phnom Penh coincides with the time when the fragrance disappears, and its fragrance belongs to mixed fragrance type, which was called "grabbing fragrant flowers" in the old society. There are many varieties of Daphne odora in Phnom Penh, and Daphne odora in Phnom Penh is the best. It likes astigmatism, avoids the hot sun, and needs shade in summer. It's winter now, so we need to keep it indoors. It should be placed in the south window to receive sunlight during the day, but not in the window at night. It needs to be moved to a place not lower than 5℃.

In addition, we should also pay attention to its taboos: avoid too wet soil, avoid hypertrophy, avoid alkaline soil, avoid being wet, and avoid insects such as insects and ants in the basin. Daphne odora in Phnom Penh is approaching flowering, so it is especially necessary to pay attention to the above points to avoid falling flowers. Pay attention to observe the leaves of Daphne odora in Phnom Penh. If the golden color and emerald color are bright and the leaves are straight up, it means that the fertilizer and water are normal; If the leaves droop, it means that the fertilizer is too thick, too raw, too diligent or too much water. Find out the reason and take measures. Too much watering is easy to correct; If the fertilizer is not used properly, water can be poured several times continuously to let the fertilizer flow out of the basin and then put it in a ventilated place to promote the rapid drying of the basin soil. If the root is rotten, it must be turned over, cut off, washed with bactericide and planted in the sand to make it grow new roots. The branches and leaves on it were cut off accordingly.

Daphne's Year

1. From early summer, potted Daphne odora should be placed in the shade or shed to avoid strong light. The flowerpot should be placed directly on the ground to avoid the smell of flowers attracting ants and earthworms. Daphne odora in Phnom Penh is resistant to pruning. Generally, dense shoots can be pruned before germination, leaving a certain gap, so that flower farmers can carefully cultivate the four "food taboos" of Daphne odora in Phnom Penh.

2. Daphne odora in Phnom Penh, after flowering around the Spring Festival, entered the vigorous germination and growth period all year round. Daphne odora in Phnom Penh should be placed in a greenhouse or a family room where there is plenty of sunshine and good air circulation. Keep the leaves clean, and the soil in the basin should not be too dry or too wet; Don't catch cold, and don't let there be oil smoke and oil smoke indoors. At this time, we must pay close attention to fertilization. Fertilizers are mainly nitrogen fertilizer and potassium fertilizer, that is, cake fertilizer and fishy fertilizer are often mixed. But it must be a fully fermented fertilizer solution with a small amount of black alum water. The fertilizer of Daphne odora in Phnom Penh should not be strong, but weak. It is forbidden to use human manure fertilizer solution. Fertilization was carried out in late February, early March and late March respectively. Fertilization time should be chosen before 10 am in sunny days. Spray water on the leaves after 5 pm on the day of fertilization. Water can't be fresh tap water. It's better to dry it in the sun or store it indoors for one day. The water temperature can't be lower than the indoor temperature. Don't sprinkle fertilizer solution on the leaves. If spilled on leaves, rinse it with watering can water immediately.

Daphne can leave the room before the end of March in Tomb-Sweeping Day, but it is necessary to prevent heavy wind and rain, so as not to hurt Daphne's new shoots.

Gradually shorten the lighting time at the end of April.

From mid-June to mid-September, you can avoid light all day. Because Daphne odora in Phnom Penh basically stops growing in summer and enters a semi-dormant state. During this period, rain prevention and fertilization are prohibited. It is also necessary to create a cool and ventilated environment and reduce the amount of watering.

6. When Daphne odora in Phnom Penh passes through Xia Hou, some dawn can be seen from the end of September to the beginning of 10. It's best to have 2 to 3 hours, and then the lighting time can be gradually extended to achieve full-day lighting at the end of 10.

7. According to the different climatic conditions in different places, Daphne odora in Phnom Penh will enter the room in June 5438+ 10 or early June 165438+ 10, and put it in a position with long illumination time behind the room.

In the middle of August and June, dilute fertilizer solution was applied once in May 438+065438+10, and once in early and late February in June 5438+. Because the buds of Daphne odora in Phnom Penh grow slowly, the fertilizer should not be applied too frequently, too much and too thick, but it should be fertilized.

After Daphne odora blooms, there are few new buds and no branches. After autumn, there are few buds, small flowers, light fragrance and short flowering period, which are not well managed and maintained.

Causes of sudden defoliation of Daphne odora in Phnom Penh;

(1) normal defoliation. After Daphne odora leaves, with the growth of a large number of new leaves, the old leaves will continue to fall off, which is a normal metabolism.

(2) Abnormal defoliation.

The light is too strong. Daphne odora in Phnom Penh likes semi-cloudy environment. Exposure to the sun will cause the leaves to turn brown and white, resulting in fallen leaves. Summer and autumn should be shaded.

② The basin soil is too wet. The root of Daphne odora in Phnom Penh is fleshy, so it is resistant to dryness and humidity. Too wet pot soil will cause root rot and defoliation. The watering of Daphne odora in Phnom Penh should be kept in a "dry and wet" state, especially during the high temperature period in summer, to avoid excessive watering or sudden rain.

③ The basin soil is too dry. Although Daphne odora in Phnom Penh likes high dryness, when the soil is too dry, the leaves will curl, wither and fall off because the plants can't get water supply.

④ Improper fertilization. Daphne odora in Phnom Penh avoids thick fat and raw fat. After applying thick fertilizer and raw fertilizer, deciduous leaves will be produced, especially when pouring thick fertilizer, which will pollute the leaves and make them fall off quickly. Daphne odora in Phnom Penh should be fertilized with thin fertilizer. After fertilization, the leaves should be washed with clear water, and people should not use human excrement to urinate. After serious defoliation, watering should be controlled and fertilization should be stopped. After normal growth is restored, daily maintenance and management can be carried out.