Common sense of citrus

Prevention and control methods of citrus diseases ① Prevention and control of scab disease: In the early stage, focus on the prevention and control of secondary spraying, the first time is when spring buds germinate (bud length is about 0.5 cm), spraying drugs to protect spring shoots; The second time, when two-thirds of the flowers fall, spray drugs to protect the young fruits.

(2) Prevention and control of anthracnose: Spraying it 2-3 times every 10- 15 days in the young leaf stage in spring and autumn, especially in the young fruit stage and August-September. ③ Prevention and treatment of resin disease: prevention and treatment should be carried out at the early stage of the disease, generally in the young fruit period of May-June and September, and spraying 2-3 times every 10- 15 days.

(4) The disease prevention agent can be a bactericidal insecticide such as Bordeaux mixture, Tobuzin and carbendazim. Control of citrus pests ① Citrus mites: According to the forecast, pest occurrence and weather conditions, use pesticides reasonably, protect natural enemies and control mites.

The agents include propargite, tricyclic tin and methomyl. (2) Citrus scale insects: For scale insects, it is necessary to predict and control when a large number of young nymphs occur, and the effect is good.

Drugs can be used, such as lesburn, quick culling and so on. ③ Citrus leaf miner: It should pass.

During the tender leaf period in autumn, generally between May and June and September, it is necessary to make a good forecast. ③ Prevention and treatment of resin disease, Wanling Powder, Miezuoli, etc. For scale insects, spray 2-3 times every 10- 15 days; According to the occurrence of different diseases and insect pests, control and reduce the harm of diseases and insect pests to citrus, and master spraying to protect spring shoots.

Pesticides include bactericidal pesticides such as carbendazim. ② Prevention and control of anthracnose: shoot-wiping method is used to prevent and control branches.

The medicine can be levobenzene; Bisultap, September. ④ Preventive agents can be Bordeaux mixture and Otsuka matsudana: Control methods of citrus red spider citrus diseases ① Control of scab, especially in young fruit period and 8 days, has good effect and quick killing.

For other citrus diseases and insect pests, mites and tricyclic tin should be controlled, the harm of leaf miner should be controlled according to the forecast, and the benefits should be eliminated. ; The second time, spray chemicals to protect young fruits when two-thirds of the flowers fall; In the early stage, secondary spraying was the main control, early autumn shoots and topaz were sprayed evenly in time, and artificial control was adopted. (2) For the first time, citrus scale insects have mastered the germination of spring buds (the bud length is about 0.5 cm), and sprayed them 2-3 times every 10- 15 days, the occurrence of pests and the weather conditions.

③ Citrus leaf miner. Control of citrus pests ① Control of citrus mites when a large number of young nymphs occur, biological control, control of mites such as rust ticks, protection of natural enemies, and rational use of pesticides.

The combined use of pesticides and propargite and spray protection should be carried out in spring.

2. Knowledge about oranges

Introduction of orange knowledge: orange is the mature fruit of many kinds of oranges, such as rutaceae plant Fuju or Juju. Oranges, together with oranges, are often called citrus. Because of their bright color, sweet and sour taste, they are one of the most common fruits in daily life. Nutritional analysis of oranges: 1. Oranges are rich in vitamin C and citric acid, the former has the function of beautifying, and the latter has the function of eliminating fatigue;

2. The thin endothelium of oranges contains dietary fiber and pectin, which can promote defecation and lower cholesterol;

3. Hesperidin can strengthen the toughness of capillaries, lower blood pressure and dilate the coronary artery of the heart, so oranges are food to prevent coronary heart disease and arteriosclerosis. Studies have confirmed that eating oranges can reduce cholesterol deposited in arterial blood vessels and help reverse atherosclerosis;

4. In fresh citrus juice, there is a substance "Nomilin" with strong anticancer activity, which can decompose carcinogenic chemicals, inhibit and block the growth of cancer cells, multiply the activity of detoxification enzymes in human body, prevent carcinogens from damaging the nucleus and protect the integrity of genes. Oranges are suitable for people: the general population can eat them, but those with cold cough and excessive phlegm should not eat them. The therapeutic effect of oranges: oranges are sweet and sour, cool in nature, and enter the lungs and stomach meridians;

Has the effects of stimulating appetite, regulating qi, quenching thirst and moistening lung;

Indications: qi stagnation in chest and diaphragm, vomiting, anorexia, deficiency of stomach yin, dry mouth, cough due to lung heat, and excessive drinking. Oranges and crabs eat together, causing soft carbuncle. Eating meat with otters makes me sick. Don't eat with betel nut. (Quoted from "Dietary Guide") Instructions for oranges: Peel raw food, or wring sweat and take liquid to drink.

3. Basic knowledge of citrus cultivation

The growth, flowering and fruiting of citrus fruit trees are closely related to environmental conditions such as temperature, sunshine, moisture (humidity), soil, wind, altitude, topography and slope direction, among which temperature has the greatest influence. Even if the temperature difference is 0.5℃, sometimes there will be completely different results. The growth and development of citrus need a temperature of 65438 02.5 ~ 37℃. The day and night temperatures of flower bud differentiation in autumn are about 20℃ and 65438 00℃, respectively, and the soil temperature of root growth is roughly the same as the ground temperature. If the temperature is too low, oranges will be frozen. When the sweet orange is at -4℃ and the satsuma orange is at -5℃, the branches and leaves will be frozen. When the sweet orange is below -5℃ and the satsuma orange is below -6℃, the plants will freeze to death.

temperature

High temperature is also not conducive to the growth and development of citrus. When the air temperature and soil temperature are higher than 37℃, fruits and roots stop growing. Temperature also has obvious influence on fruit quality: in a certain temperature range, with the increase of temperature, the sugar content and soluble solids increase, the acid content decreases and the quality becomes better. Citrus is a tree species with strong shade tolerance, but good sunshine is needed for high quality and high yield. Generally, areas with annual sunshine hours 1200~2200 hours can grow normally. For example, compared with Chongqing citrus producing areas with less sunshine, South China with good sunshine and abundant calories has higher sugar content, lower acid content and higher sugar and acid content. Generally, tropical and subtropical regions with annual rainfall of about 1000mm are suitable for citrus planting, but irrigation is often needed because of uneven distribution of annual rainfall. The suitable relative water content of soil is 60%~80%, and irrigation is needed when it is lower than 60%. Too much rain will cause soil water accumulation or high groundwater level and poor drainage in citrus orchards, resulting in root death. Citrus fruit trees require that the air relative humidity should be around 75%.

land

Citrus can adapt to a wide range of soils. Purple soil, red and yellow soil, beaches and beaches can all grow at pH 4.5~8, and pH 5.5~6.5 is the most suitable. The growth of citrus roots needs high oxygen content, and the soil with loose texture, good structure, organic matter content of 2%~3% and good drainage is the most suitable.

4. Citrus management knowledge and pruning

The key point of citrus pruning is to do a good job of pruning large branches.

Pruning large branches is a method of pruning large branches in detail, which is essentially to correct and prune the skeleton of trees, which can control the top advantage, open the crown, rationally distribute nutrients and regulate the growth of trees. The main technical points are as follows: (1) Pruning time is generally from early February to mid-March, when spring buds germinate and flower buds form.

(2) Pruning objects are suitable for adult citrus orchards over 7-8 years old, and the effect of citrus orchards with closed crown is better. (3) Pruning requires pruning large branches and readjusting the crown skeleton from bottom to top. On the basis of finding out the reasonable distribution of tree skeleton, other branches can be sawed.

After pruning, the height of the tree should be controlled below 3 meters, leaving 3~4 main branches and arranging them evenly. Each main branch should be equipped with 2~3 auxiliary main branches, and more side branches and fruiting branches should be left. The branching angle of the main branch and the secondary branch should be greater than 45 degrees, so that the tree body is dwarfed, the crown is open and the branch order is clear.

(4) The operation essentials should be revised according to the above tree shape and crown, which can be completed in 2~3 years. Crown branches are divided into three categories: permanent branches, redundant branches and sawn branches in the current year.

The operation steps are as follows: first look: look at the number and branching angle of main branches and auxiliary branches. The operator dives into the lower part of the tree crown, looks up and scans around the tree crown, and determines 3-4 large branches with proper orientation to be kept as the main branches, while other large branches competing with the main branches are kept, and the remaining coarse branches are also treated separately by temporary branch sawing.

Second sawing: pruning large branches at one time is too large, which has a certain impact on the yield of the year, and can be implemented in 2~3 years according to the size of the tree. Generally, the amount of one pruning is about 1/4 of that of the green leaf layer.

Old trees, weak trees and old trees should be heavy, which is1/3 ~1/4 of the whole leaf; Young trees, strong trees and newborn trees should be light, with the whole leaf of 1/5~ 1/6. In the first year, cut off the middle upright branches competing with the main branches from the base, reduce the height of the tree, open the "skylight", and appropriately cut off the main branches and dark branches that disturb the tree shape, so as to make the branch order clear.

1~2 main branches and 2~3 auxiliary main branches can be cut off in that year. In the second year, 2~4 temporary branches will be sawed off.

If the pruning amount is large and cannot be completed within two years, it will continue in the third year. Three pruning: roughly pruning the branches of diseases and insect pests, dead branches and horizontal branches, appropriately retracting some 2-3-year-old lateral branches, and renewing the aged branches.

Four-protection: after sawing the big branches, protect the wounds. The kerf should be slightly inclined, flattened with a knife, coated with protective agent or wrapped with a film. Citrus management: (1) Disease control 1, Huanglongbing Huanglongbing, also known as yellow shoot disease, is the most important disease of citrus in south subtropical China, especially in southern Guangdong, Guangxi and Fujian provinces, and Taiwan Province and Hainan provinces.

Yunnan, Guizhou, Hunan, Jiangxi, Zhejiang and other provinces have also occurred in some areas. The leaves of new shoots above the top and periphery of diseased trees 1~2 do not turn green, or even yellow-green, and diseased leaves are easy to fall off, which is caused by bacteroides injury.

Pathogens spread far through diseased scions and seedlings, and close spread in orchards depends on citrus psylla. Banana oranges, ponkan oranges and red oranges are the most vulnerable.

Prevention and control methods: Strictly implement plant quarantine, and it is forbidden to introduce diseased seedlings, scions and fruits into disease-free areas. After non-toxic identification and pathogen detoxification, a disease-free mother garden and a disease-free nursery are established; Rootstock seeds and scions need 49? C hot and humid air for 50 minutes, 1000PPm tetracycline hydrochloride or oxytetracycline hydrochloride for 2 hours or 500PPm solution for 3 hours, then take it out and rinse it with clean water.

Strictly control citrus psylla, dig out and destroy diseased plants in time. The results of initial diagnosis showed that trunk injection of tetracycline hydrochloride or penicillin 1000PPm had a certain therapeutic effect.

2. Canker disease is the object of plant quarantine at home and abroad, which occurs in many citrus producing areas in China, especially in the southeast coast, but it also occurs in Hunan, Hubei, Jiangxi and other places in the mainland. Harm the buds, leaves and young fruits of citrus.

After the onset of the disease, pale yellow or light green oily spots with large needle tips began to appear on the back of the leaves, and then expanded into taupe near-circular lesions, which penetrated the front and back sides of the leaves and bulged out. However, the bulge on the back of leaves is more obvious than that on the front. The leaf center is cracked, corked and surrounded by yellow-brown halo. The diameter of lesions is generally 2~5 mm, and sometimes several lesions are connected into irregular large spots.

The lesions on branches are similar to those on leaves, but more prominent than those on leaves. The leaf spot on the fruit is larger than the leaf spot, the cork protrusion is more obvious, the crater in the center is more obvious, and the halo disappears after the fruit matures.

It often causes defoliation and fruit drop, reducing yield and quality. This disease is a bacterial disease. The pathogen overwinters in plant tissues, spreads at close range through wind and rain, contact between insects and branches and leaves, and spreads at long distance through scions and fruits of diseased seedlings.

Seedlings, young trees and young tissues are susceptible to diseases, while old leaves and mature fruits are not susceptible. At present, some citrus varieties have strong disease resistance, such as Ehime 30, Ehime 38, Chunjian, Tianxiang and Qingjian.

Prevention and control methods: Strictly implement plant quarantine, and prohibit the introduction of diseased seedlings, scions and fruits into disease-free areas. Once found, it should be completely eliminated, establish disease-free nursery, cultivate disease-free seedlings, dig out and burn diseased plants in time, and strengthen the prevention and control of leaf miner, so as to reduce the wounds on branches and leaves and prevent the invasion of germs. Plant disease-resistant varieties, such as Ehime 30, Ehime 38, Chunjian, etc.

Pesticide control: spray 1 time on the 20th and 30th day after each new shoot germination. The main pesticides are 0.5% bordeaux solution, 77% kocide 1000 times solution, 12% copper chloride 800~ 1000 times solution and 40% copper hydroxide 600 times solution. In addition, the scion was soaked in 2000ppm of agricultural streptomycin and 1% alcohol for 1 hour, and then washed with clear water.

3. Scab occurred in all citrus producing areas in China. It mainly harms the tender leaves, shoots, young fruits and flowers of citrus.

At first, the damaged part of the leaf was a small brown spot with water stains, and then it expanded into a yellow cork-like lesion. The lesions are mostly conical protrusions on the back of the leaves and concave on the front, and the lesions do not penetrate the leaves (which is the fundamental difference from canker). When multiple lesions are connected together, the leaves are often twisted and deformed. The lesion on the new shoot is similar to that on the leaf, but the protrusion of the lesion is not as obvious as that on the leaf.

After the petals are damaged, they will soon fall off, and soon the young fruit will get sick. When severely damaged, the fruit is small, deformed, thick and sour.

Control method: cut off diseased branches and leaves in winter to eliminate overwintering germs. Strengthen the management of fertilizer and water to make the buds grow orderly and healthily.

When the length of spring bud is more than 4 mm and the falling flower is 2/3, spray each time/kloc-0.

My father wants to learn something about growing oranges, but I don't know how.

High-quality and efficient cultivation techniques of citrus. High standard garden construction 1. Choosing a garden should master the principle of suitable land and planting, adjust measures to local conditions, and make reasonable arrangements according to factors such as temperature, water source and soil improvement.

Generally, hilly land with an altitude below 400m and a slope of less than 20 degrees and a gentle slope in the south or southeast direction is better. Different varieties have different tolerance to low temperature, and their tolerance from strong to weak is kumquat-satsuma-vermilion, tangerine, ponkan, local early sweet orange-grapefruit-lemon.

Be careful not to build gardens in epidemic areas with dangerous pests and diseases. Before the garden is built, investigate the available water sources and water supply, ensure water irrigation in autumn and dry season, and require convenient transportation. 2, the construction of horizontal terraced mountain orchards and hilly orchards with a slope greater than 10 degrees should build horizontal terraces to prevent soil erosion.

Terrace consists of ladder wall, ladder surface, ladder ridge and internal drainage ditch. Usually, ladders are repaired step by step from top to bottom, and adjusted according to the principles of "big bend is the trend, small bend is the straight line", "convex moves down, concave moves up", and lines are added or subtracted as appropriate according to the horizontal distance between the centers of two adjacent ladders to form an outline.

When filling and digging, dig inside and fill outside. Attention should be paid to the quality of ladder wall to ensure that ladder collapse, soil erosion and other phenomena do not occur. There are several kinds of ladder walls, such as stone ridge, soil ridge and grass ridge, which can be selected according to materials and funds.

First, dig a ditch above the highest contour line to prevent rainwater from flowing down from the top of the mountain, then dig a ditch with a width of 0. 1~0.5m and a depth of 0.3m on the horizontal datum line, loosen the soil at the bottom of the ditch, make it closely combine with the fill, tamp the ladder wall, and repair it to a certain height, then borrow soil from the inside of the ladder to build a wall, and the soil should be stepped on layer by layer, and build a wall while digging the ladder. Then level the ladder surface, dig it up from the upper ladder baseline and fill it in the built-in ladder wall. The ladder surface should be high outside and low inside, with ridges outside and ditches inside. A horizontal ridge should be built to store water every 4~5m in the ditch.

Level the surface of the ladder, and pay special attention to improving the subsoil inside the ladder. On gentle slopes, mechanical garden opening can be used to improve work efficiency.

After the land is leveled, broad beans, garden flowers, Indian cowpeas, soybeans, mung beans, etc. Planting is to fertilize and improve soil fertility. According to the planning and design, the positions of roads, irrigation and drainage channels, shelterbelts and buildings in the flat orchard are determined first, and then several planting areas are divided between the roads and channels for reclamation one by one. Before reclamation, remove weeds, shrubs and tree shrews on the ground and level the ground.

The row direction and plant direction of Pingju Orchard are straight lines in Cheng Yi, and the row direction is perpendicular to the main road on the edge of the community, generally north-south direction. Slope lines can also be planted in hilly orchards with a slope of 10 degrees.

3. Seedlings are usually planted from late February to early March before spring shoots germinate, or from late June 10 to early February 18, which can be arranged according to climatic conditions and seedling conditions. Planting distance depends on variety characteristics, topography, soil, rootstock and farming management methods.

Generally, 40-50 early-maturing satsumas are planted in 667 square meters of flat land, and 70-80 in mountainous areas; 40-50 medium-ripe satsumas are planted in 667 square meters of flat land and 50-70 in mountainous areas; 20~40 sweet oranges are planted in the flat land and 40~60 in the mountainous area; 50~60 plants are planted in the flat land and 70~80 plants are planted in the mountainous area; Planting 20-40 pomelo trees in the flat land and 40-60 pomelo trees in the mountainous area; Before planting, dig holes at fixed points and apply planting fertilizer. Generally, 3kg cake fertilizer and 1kg phosphate fertilizer are applied to each hole, which are fully mixed with the soil, applied to the bottom of the hole, and then covered with fine soil with a thickness of 20cm, so as to separate the roots from Yueba, put the seedlings in place, pay attention to the up-and-down alignment, stretch the roots, fill in a small amount of fine soil, and then gently lift the seedlings upward to closely combine the soil with the roots, and fill the soil with compaction to make the soil flush with the root neck.

Pouring sufficient root water, making a small disc with topsoil around the seedlings, pouring 20kg for each plant, then covering the soil, exposing the joint, and standing on the windward side. Water it every 1 week 1 time without rain on sunny days until it survives.

Second, the application of standardized fertilization technology. China began to implement the Technical Regulations for the Production of Pollution-free Food Citrus from 200 1 to 1, which is a standardized production technology put forward by the national agricultural department according to the current citrus production situation and market demand, as well as years of practical experience. In the process of fertilization, the detailed rules put forward the principle of "fully meeting the needs of citrus for various nutrient elements, recommending more organic fertilizers and rational application of inorganic fertilizers".

At present, most citrus orchards have a bad grasp of fertilization. Some people think that the more nitrogen is applied, the better the frequency and quantity of fertilization. Moreover, the types of fertilizers used are single, or ternary or binary compound fertilizers, or even elemental fertilizers, and they do not pay attention to the application of organic fertilizers and soil improvement, or even ignore the supplement of trace elements. In order to realize the standardized production of citrus, standardized fertilization technology must be implemented.

1. Fertilization There are many kinds of fertilizers to choose from. In addition to qualified and applicable compound fertilizers, organic and inorganic compound fertilizers, biological fertilizers and foliar fertilizers, there are also farm manure such as green manure and human and animal manure. When dealing with farm manure, especially human and animal manure, it must be fermented at a high temperature above 50℃ for more than 7 days.

In addition, the residue after biogas production is also a good fertilizer. When choosing or buying commercial fertilizers, we should master the principle of combining organic fertilizers with inorganic fertilizers.

For example, the organic-inorganic compound fertilizer of sea salt used in many citrus producing areas in Hunan Province contains a variety of nutrients, which can effectively improve the quality. 2. Pay attention to fertilization methods. Soil fertilization mainly adopts methods such as furrow application and ground spreading application.

Dig a ditch (hole) with a depth of 20 ~ 40 cm at the dripping place of the tree crown. Symmetrical rotation position fertilization.

Apply instant chemical fertilizer in shallow ditch (point). Liquid fertilization can be used in citrus orchards with spraying and drip irrigation facilities.

When using organic fertilizer to improve soil, it is best to dig deep ditches and bury them outside drip line. The time of foliar topdressing is mainly in flowering and fruit setting period, fruit development period and after harvest. It is best to use organic nutrients such as amino acids and nucleotides, and the concentration should be reduced during high temperature and drought, and foliar topdressing should be stopped within 20 days before fruit harvesting.

Young trees should be fertilized frequently and thinly, mainly with nitrogen fertilizer, supplemented by phosphorus and potassium fertilizer. Fertilize 4~6 times in spring, summer and autumn.

The application of effective nitrogen fertilizer should be stopped after August. The ratio of nitrogen, phosphorus and potassium is 1: 0.25 ~ 0.3: 0.5.

Fertilization amount should be increased year by year, from less to more. The periphery of young tree crown should be irrigated with decomposed dilute manure to avoid direct contact with root system.

You can also choose a special formula fertilizer for young trees. Fertilize the fruit trees.

The ratio of nitrogen, phosphorus and potassium is1:0.5 ~ 0.7: 0.7 ~1.0. Trace element fertilizers are supplemented with whatever they lack.

There are adult trees every year.

6. Some information about citrus

Citrus tastes sweet and sour and is very popular. More importantly, its nutritional value is higher than that of ordinary fruits. According to the determination, every100g edible part contains 0.9g of protein, 0.01g of fat and 0.2g of carbohydrate, which can generate 53kcal calories. It also contains 26 mg of calcium, 15 mg of phosphorus, 0.2 mg of iron, 0.55 mg of carotene, vitamin B 1, B2 and niacin. The content of vitamin C in orange is second only to jujube and litchi, while the content of vitamin C in orange is 49 mg, which is higher than litchi.

Traditional Chinese medicine believes that all kinds of citrus have medicinal value, regardless of peel, stone, leaves and orange collaterals, they are all "authentic medicinal materials". Orange peel is called dried tangerine peel, which is bitter, pungent and warm, and has the function of strengthening the spleen. Orange collaterals are bitter in taste and flat in nature, and have the effects of dredging collaterals, resolving phlegm, smoothing qi and promoting blood circulation. Orange stones are bitter in taste, flat in nature, and have the effects of regulating qi, dispersing stagnation and relieving pain. If you have a cold, cough, stomach cold and vomiting, it is effective to decoct with orange peel ginger. For women with induration, green tangerine peel 15g, green orange leaf 65438 g, and orange pit 65438 g can be decocted with yellow wine twice a day, and the curative effect is remarkable.

Eating citrus on the journey has the functions of calming the stomach and strengthening the spleen, promoting blood circulation and removing blood stasis, eliminating fatigue and alleviating acclimatization.

7. What can't oranges be eaten with?

Introduction to citrus knowledge: oranges; China tangerine; Sweet orange; Citrus is a tropical and subtropical evergreen fruit tree, and its main producing areas are Guangdong, Fujian, Sichuan, Hunan, Zhejiang, Hubei, Guangxi, Yunnan and Guizhou. Other places such as southern Anhui, near Taihu Lake in Jiangsu and Hanzhong in Shaanxi are also cultivated. There are many kinds and varieties of citrus. There are four kinds of citrus cultivated in China: pomelo, orange, broad-skinned citrus and kumquat.

Pomelo has the largest fruit, thick skin, many petals (13- 18 petals) and many seeds. Excellent varieties include Shatian pomelo and Pingshan pomelo. Oranges include lime and sweet orange, with round fruit and orange peel. Excellent varieties include Xinhui orange, Jincheng orange and perfume orange. There are many varieties of wide-peel citrus with loose peel and easy separation of pulp, which can be roughly divided into orange and orange. The fruits of orange group are generally small, flat, thin and loose, and easy to peel off. Sponge layer is light yellow, embryo is dark green, and there are one year orange, red orange, vermilion orange and milk orange. Oranges are generally larger, oblate, slightly thicker and easier to peel. The sponge layer is white and the embryo is light green, including banana orange and satsuma mandarin. Kumquat has small fruit, fleshy orange peel, sweet taste and few petals (3-7 petals). There are kumquat, Luofu orange, round kumquat, golden bullet and other varieties. Nutritional analysis of citrus: 1. Oranges are rich in vitamin C and citric acid, the former has the function of beautifying, and the latter has the function of eliminating fatigue;

2. The thin endothelium of oranges contains dietary fiber and pectin, which can promote defecation and lower cholesterol;

3. Hesperidin can strengthen the toughness of capillaries, lower blood pressure and dilate the coronary artery of the heart, so oranges are food to prevent coronary heart disease and arteriosclerosis. Studies have confirmed that eating oranges can reduce cholesterol deposited in arterial blood vessels and help reverse atherosclerosis;

4. In fresh citrus juice, there is a substance "Nomilin" with strong anticancer activity, which can decompose carcinogenic chemicals, inhibit and block the growth of cancer cells, multiply the activity of detoxification enzymes in human body, prevent carcinogens from damaging the nucleus and protect the integrity of genes. Citrus is suitable for people: the general population can eat it, but it is not suitable for people with colds, coughs and phlegm. Citrus dietotherapy: Citrus is sweet and sour, cool in nature, and enters the lung and stomach meridians;

Has the effects of stimulating appetite, regulating qi, quenching thirst and moistening lung;

Indications: qi stagnation in chest and diaphragm, vomiting, anorexia, deficiency of stomach yin, dry mouth, cough due to lung heat, and excessive drinking. Guidance on citrus practice: peel raw food, or wring sweat and take liquid to drink.

8. What can't oranges be eaten with?

Oranges are rich in sugars, namely glucose, fructose, sucrose, vitamins, malic acid, citric acid, protein, fat, dietary fiber and various minerals. Chinese medicine believes that oranges are warm and easy to get angry when eaten too much, especially because of yin deficiency and yang hyperactivity. It is best to eat less. I remind you that some foods can be poisoned when eaten with oranges, so what can't oranges be eaten with? This is an introduction for you.

1, cucumber

Oranges should not be eaten with cucumbers. Vitamin C-decomposing enzymes in cucumber will destroy various vitamins contained in oranges and reduce the nutritional value of oranges.

2. Eel

Eels and oranges are very similar, and they will be poisoned when eaten together.

3. Crabs

Citrus and crab can't be eaten together. Carp is rich in protein, and oranges contain more fruit acid. If you eat fruits rich in fruit acids, such as citrus, and protein fish, the fruit acids will solidify protein and affect the digestion and absorption of protein.

Step 4: Bonuses

Bonus and oranges are very similar, both are hot and humid, and eating together is easy to make people get angry.

5. milk

Oranges should not be eaten with milk. Protein in milk will react with peracid and vitamin C in oranges, and condense into lumps, which will affect the digestion and absorption of the stomach, and easily cause discomfort symptoms such as abdominal distension, abdominal pain and diarrhea. Therefore, people must not eat oranges within 1 hour after drinking milk.

6. Animal liver

Citrus and animal liver cannot be eaten together. Citrus is rich in vitamin C, and animal liver is rich in copper and iron plasma. If both are eaten at the same time, copper-iron plasma can easily oxidize vitamin C in citrus, thus losing its original nutritional value.

7. Little carrots

Oranges should not be eaten with radishes. Because after eating radish, people will quickly produce a substance called sulfate and metabolize it to produce an antithyroid substance-thiocyanate. If you eat oranges at this time, the flavonoids in oranges will be decomposed in the intestines and converted into hydroxybenzoic acid and ferulic acid, which will promote the inhibitory effect of thiocyanate on thyroid gland and lead to goiter.

8, eggs

1. Eggs are similar to oranges. Eggs are rich in protein. If eaten together with fruits rich in fruit acids such as oranges, fruit acids will solidify protein, affect the digestion and absorption of protein, and even produce bad symptoms.

9. Asparagus

Citrus and asparagus can't be eaten together. Citrus contains more fruit acid, and Gracilaria lemaneiformis is rich in protein. If eaten at the same time, the fruit acid in citrus will condense the protein in Gracilaria lemaneiformis, which will affect digestion and absorption.

10, drugs

Take medicine and avoid eating oranges. Oranges are rich in fruit acid and vitamin C. When taking vitamin K, sulfonamides, spironolactone, aminopterin and potassium supplements, oranges should be avoided.

1 1, rabbit meat

Rabbit meat and oranges are grams. Because oranges are sweet and sour and warm, eating too much generates heat, and rabbit meat is sour and cold. Eating them together can cause gastrointestinal dysfunction and diarrhea, so it is not advisable to eat oranges immediately after eating rabbit meat.

12, soybean milk

Soymilk and oranges should not be eaten together. Oranges contain more fruit acid, which can coagulate and denature protein in soybean milk and affect digestion and absorption.

9. What should I pay attention to when growing citrus?

Tree tray shallow tillage and grass-covered tree tray shallow tillage 5? 10 cm, keep topsoil loose and eliminate weeds.

However, intertillage should be shallow rather than deep, and herbicides can also be used to control weeds. Covering materials mainly include mountain grass and straw, mainly covered by tree disc, and the thickness of covering grass is 10? 20 cm, and the width is 20 cm outside the crown drip line. After mulching, the mulch will become human soil with fertilization, which can obviously and stably maintain soil moisture moderately, which is beneficial to the growth and fruiting of citrus and reduces the influence of drought, high temperature in summer and low temperature in winter.

In the steep mountain orange orchard, the dense growth of terraced grass can prevent erosion and collapse, and the dead and cut weeds are decomposed by soil microorganisms, which can improve soil humus. After the death of grass roots, it can not only loosen soil, improve its physical and chemical properties, but also increase soil organic matter. You can choose perennial herbs with dense roots such as day lily and thatch to fix the wall.

Young trees should be moderately shaped, lightly cut or not cut. The pruning of adult trees from fruit picking to spring shoot germination is based on the principle of simplicity and labor saving.

Prune the big branches to keep a certain distance between the rows. Regeneration and pruning, combined with soil improvement and root regeneration, are mainly used for the regeneration and rejuvenation of aged trees.

There is a certain gap between the main branches, and the length of the second auxiliary main branch reduces the invalid volume first. 50% of a major branch? 60%, 60 intervals? Cluster branches and upright branches on 70 cm secondary branches should be drained from the base. If the apex of the secondary branch droops, it should be retracted to make it upward.