How to plant new buds of cymbidium without roots? Can the weather in Nanning grow alive now?

Usually propagated by ramets. The ramet is longer than the short sleep period before flowering and bud growth. The ramets should be properly dried and the roots should be slightly pale and soft. In the past year, after 2-3 years of vigorous growth, 2-3 pseudobulb slices were cut from each cluster, and one of them had to be formed. In order to avoid wound infection, sulfur powder or toner can be applied. 1-2 was put in a dry place, and then potted separately to form new plants. Point, put it in a semi-shady place after transplanting, and you can't water it immediately. If you feel too dry, you can spray a small amount of leaves and surface water in the basin to prevent the leaves in the pseudobulb from drying up, falling off and serious shrinkage. Before the new roots grow, water in the germination base to be treated.

2 parts of Cymbidium hybridum, with the diameter of 1.5-2 cm, fern roots, bark carbon moss or potted plants, and some granular substances such as broken bricks and charcoal can also be added. The flowerpot should be tall, with a diameter of 15-20cm, and 2-4 seedlings per pot. Cymbidium hybridum likes high air humidity in spring, summer and autumn. At the same time, it should be watered a lot to take root and sprayed with water on its leaves regularly. However, after flowering in early spring, the hibernation period of Cymbidium hybridum is short, so it must be watered less until the new buds grow new roots.

Lush plants obviously need fertilizer more than ordinary cymbidium and cymbidium, and fertilization should be strengthened during the growing season. Generally, 1/3 water is used to make cakes with a diameter of about 2 cm, which are mixed with spherical clay for fermentation and dried for later use. On the surface of the pot, in the spring when new buds are left, there is a certain distance for orchids to grow with slow release of nutrients by chemical fertilizers. It is applied twice a year, and several pieces of fermented liquid manure per can can can be applied once every 1-2 weeks, or sprayed on the leaf surface and basin surface with a sprayer at 0 1 minute 0 1 second. The concentration of NPK fertilizer should be 3-5% and 1-2 times per week. Stop gaining weight in late autumn.

China Cymbidium hybridum is more resistant to diseases and insect pests than common orchids, but it will still be attacked by various diseases during its growth. This is an important measure to strengthen prevention. To maintain orchids well, spray chlorothalonil or carbendazim 1000 times solution on both sides of orchid leaves every10 day.

[Edit this paragraph] Practice point

The culture cycle usually requires 3-4 years of flowering tissue culture bottles, and its growth cycle standards are as follows: BR/& gt；; group

The seedlings were cultured with sphagnum in 50-hole or 66-hole plates for two months.

8×8 black nutrition pot, substrate bark, cultured for five months.

12× 12 black nutrient bowl, with bark as matrix and stone as bottom cushion, cultivated for seven months.

15× 18 black nutrient bowl, with bark as matrix and stone as bottom cushion, cultivated in May-July.

18×22 rigid plastic flowerpot, substrate bark, bottom cushion stone, cultured for 12 ~ 15 months.

Second, the culture conditions

Temperature: The optimum growth temperature is 65438 00℃. The high temperature resistance at 30℃ is higher than that of Phalaenopsis, and the temperature above 8℃ can distinguish day and night better.

2。 Illumination: The optimum light intensity of growing environment is 15000 ~ 40000 lux, and the maximum light intensity is less than 70000 lux.

3。 Air humidity: I like humidity very much, but I should pay attention to ventilation, otherwise it is easy to get anthrax. The humidity of seedlings should be 80%-90%, and the humidity of large seedlings should be 60%-85%.

Fertilizer: (1) The ratio of nitrogen, phosphorus and potassium is1:1,and the ratio of flower induction period is 1: 02: 02 to 3: The fertilizer solution pH value is 5.8 to 6.2.

Generally speaking, the concentration of fertilization is 3500-4000 for seedlings, 2000-3500 for large seedlings, 1-2 times/day in summer (alternate fertilization), and generally fertilization for three days in other seasons.

Organic fertilizer: organic fertilizer is applied from the tissue culture bottle once a month before flowering, and the ratio of soybean planting season to bone meal is 2: 1. The organic fertilizer for promoting flowers with pure bone meal should not be applied to the roots and should not be higher than the nutrition bowl. The salt content of bone meal is too high, so it can be washed with clean water before application. In winter, it is best to stop applying organic fertilizer in the following different periods:

50 holes /66 holes: 0.5g/ hole 8cm × 8cm Nutrition bowl: 1-2g/ pot.

12cm× 12cm nutrition bowl: 7-9g/ pot.

15cm×18cm:18cm× 22cm, 12 to 15g/ pot.

Flower pot: 15 to 20g/ pot

Long-acting slow-release fertilizer: Long-acting slow-release fertilizer is widely used in cymbidium. Generally, when n: p: k = 13, the model is 1 13 seconds. The period of validity is 3 months or 6 months, and slow fertilization is started. After the release of nutrients, it is one month, within one month, to ensure the supply of chemical fertilizers. Long-acting slow-release fertilizers are generally seedlings.

(2) Water shall be poured once a day in May and September, once a day in 7-8 months, and once every 2-3 days from 10 to April of the following year. Water at noon, and the size of seedlings and the weather conditions of watering frequency should be adjusted at any time.

5。 Insect pests: (1) fungal anthrax: It mostly occurs in the dark brown and gray between the tip of the leaf and the edge of the lesion. If the lesion is caused by high temperature, high humidity and poor ventilation, it should be cut off and sprayed in time. Commonly used chemicals mancozeb 1000 times, propargite 1000 times.

Chemical control of other common fungal diseases: 1000 times of chlorothalonil, 800 times of toxic mold and 800 times of metalaxyl.

(2):6000 times of agricultural streptomycin sulfate, 300ppm of streptomycin and 800 times of validamycin are commonly used in medicines. Cutting, long-term cultivation, serious soft rot. In the small seedling stage, no disease occurs. Generally, when the bud grows to 20-30 cm high in the third year, it is found that the bulb suddenly rots and will also appear on the mountain. Only in this way can it be eliminated, otherwise it will easily lead to the spread of diseases to healthy plants. If the surrounding environment is treated in time, health and drug prevention will be inhibited by the disease.

(3) Pests: pests such as slugs and spider mites, and commonly used pesticides such as buster (trap) and triclosan. From June to September, the ventilation is poor, and the slugs are serious, mostly hidden in the back of leaves. The root of the harm is to prevent cracks between lime blocks, and then spraying can kill a large number of adults, providing long-lived mosaics and particle shell traps. Starscream occurs on the back of leaves, and plays from the back of leaves.

Other commonly used pesticides for pest control: propargite 2000 times, Fuxing 6000 times, dimethoate 2000 times, solution 3000 times, Daphne odora.

Attention: Save manpower and material resources to achieve the best control effect. Chemical reactions of pesticides can usually be used. When mixing concrete, please refer to the following combinations:

1200 times triple submission of copper+1300 times effectiveness increased by 6000 agricultural streptomycin sulfate (prevention of fungal and bacterial diseases)

500 times of carbendazim, 800 times of validamycin and 2000 times of chlorfenapyr (seedlings are used to resist fungi, bacteria and mites) > 1000 times of killing (used to revive bacterial diseases and fungi).

300ppm streptomycin 8000 times (bacteria and pests)

800 times of chlorothalonil and 2000 times of hydrated mildewproof hormones (fungi and bacteria).

Wanxing 4000 times+Jinggangmycin 800 times (thiophanate methyl 800 times against slugs and bacteria)

& ltBR/ 1200 Hydramycin (bacteria and fungi)

800 times of thiophanate methyl +300 ppm of agricultural streptomycin (fungi and bacteria), > 800 times of easy protection (fungi and bacteria),

1000 times chlorothalonil+1000 times kocide (mycosis)

500 times carbendazim and 800 times metalaxyl (seedling and fungal diseases)

800 times of metalaxyl+1600 times of benomyl 1300 times of killing enemies (fungi and slugs)

Revive chlorothalonil 800 times (pests and fungal diseases)

800 times is 8000 times and 6000 times that of Thirdomyl. Lucky star +800 thiophanate methyl 2000 times imidacloprid (virus, fungus, mite).

Antibiotic resistance is 300 times (vaccine against bacterial diseases and liriomyza sativae)

2000 times enemy kill +800 1875 times half a thousand times pure metalaxyl (slug mycosis)

100ppm gibberellin (promoting economic growth) and 800 times metalaxyl and clotrimazole (used for leaf disinfection)

1500 times enemy kill 2000 times dichlorvos 2000 times dimethoate (800 combat slugs)

Avermectin 3000 times (control Laodelphax striatellus mite, active ingredient is avermectin)

Trisodium phosphate (antiviral). Application technology of growth retarder: the blue leaf length of Daphne grandiflora is 50-60 cm, and the most suitable non-retarder leaf length is 70-80 cm. In Japan, in order to improve production efficiency and reduce unit area, the specific watering method of paclobutrazol with short leaf length is generally adopted: when the leaf length is 30-40 cm, the technical effect suitable for dwarfing is the best. 10ppm to 30ppm of paclobutrazol should be watered in 2-3 months, and special varieties may need to be treated twice, which takes the longest time. Compared with 10-20 cm leaves and leaves with flower height of about 10 cm, the application of this method will inhibit the growth of the watch, and the stem will be reduced accordingly, and the feel of the watch will be better than the main assets and liabilities of the flower.

7。 Fertilizer, light, temperature, flowering and flowering time are the key factors in June 6- 10/October of the third year. Organic fertilizer should be mixed with pure bone powder and inorganic fertilizer to increase the proportion of potassium fertilizer. The light intensity is greater than 15000 lux, and the temperature difference between day and night is 10℃.