How to control the branches, flowers and fruits of citrus?

It is suggested that compound fertilizer and medium and trace elements should be applied in rainy weather, with water and fertilizer as the main component and nitrogen, phosphorus, potassium and medium and trace elements as the auxiliary components. If the amount of flowers is too small, phosphorus and potassium should be applied as early as possible. In the second physiological fruit drop period, the dosage of potassium sulfate should not be too much, generally 50 ~100g. The suitable amount of spring fertilizer is 150 ~ 200g, and it should be applied in furrow to make the fertilizer really absorbed and utilized.

Strengthen soil management

Clean up the accumulated water inside and outside the orchard in rainy days, and irrigate in dry and hot weather. In case of high temperature and dry weather for more than 7 consecutive days, it should be irrigated in time to keep the soil moist and loose. Conducive to root water absorption and fertilizer absorption; Citrus trees with many deciduous leaves should be topdressed several times in small amounts. Trees with few flowers should strictly control the amount of nitrogen fertilizer before shooting. Pay attention to foliar fertilization in citrus orchards with damaged dry roots. At the same time, trace element fertilizers should be supplemented.

Sparse and excessive spring shoots and early summer shoots

In order to solve the contradiction between the selection of shoots and the results, firstly, the flowerless or dense spring shoots with excessive growth are thinned, and some new shoots are thinned according to the principle of three to two and five to three before cutting off the shoots; The second is coring, when the bamboo shoots grow to 15 cm, coring should be carried out to save nutrition; Thirdly, when the summer shoots grow to 3-5 cm, they should be thoroughly smoothed and summer buds should be removed continuously to reduce nutrient consumption and fruit drop. For strong trees with few flowers and few fruits, fruit girdling can be carried out 25 days after flower withering, and summer shoots can also be controlled.

Hormones protect flowers and fruits.

Plant growth regulators can promote the absorption of fertilizers by citrus and accelerate the transport of nutrients in the body. It is suggested that fruit farmers should spray Ying Hui Li Guoliang solution with a dilution of 3,500-4,000 times on the whole plant at flowering stage, physiological fruit dropping stage, fruit swelling stage and before overwintering, so as to promote and protect flowers and reduce fruit dropping.

Resist disaster

During flowering and physiological fruit drop, when the temperature is higher than 30℃ and the air humidity is lower than 60%, the canopy should be watered or sprayed at 10:00- 15:00. Can be used in combination with water spraying and foliar fertilizer spraying.

Insect disease prevention

Anthracnose, scab, red spider, yellow spider, aphid, bud maggot, malignant leafhopper, etc. are the main diseases in the flower and fruit period, and corresponding control measures should be taken in time.