Common problems in mango planting: how to fertilize mango?
Fertilization of mango fruit trees mainly occurs in four periods:
1, flower-promoting fertilizer: 1 month before flowering is the flower bud differentiation period of mango, which can promote flower bud differentiation. Fertilizer should be mainly nitrogen and potassium fertilizer.
2. Strong flower fertilizer: mango trees have large flowers and consume a lot of nutrients, so 1 times available nitrogen fertilizer should be applied at flowering stage.
3. Strong fruit fertilizer: About 30 days after flowering is the period of rapid fruit growth and development. During the rapid growth of young fruits, strong effect fertilizer should be applied topdressing to meet the demand of fruit development for nutrients.
4. Before and after fruit picking, promote shoots and strengthen shoots: Mango bears a large amount of fruit and consumes a lot of nutrients. If fertilizer is not supplemented in time, it is difficult to restore the tree vigor and affect the germination of autumn shoots.
Shallow ploughing after fruit picking and deep ploughing around the beginning of winter create a fertile, loose and moist orchard soil environment, which is in harmony with fertilizer, water, gas and heat. For mango orchards in barren hills, special attention should be paid to deep ploughing and green pressing to improve the soil; Do a good job in orchard irrigation and drainage system and soil and water conservation project construction to lay a good foundation for high and stable mango production.
Common problems in mango planting: how to prune mango reasonably
Mango fruit trees are generally pruned in summer and pruned after harvest. Seal the wound with antiseptic film in time to promote the growth of wound healing tissue.
1, summer pruning is usually to erase all summer shoots to adjust the contradiction between summer shoots and fruits on nutrients; At the same time, the inner branches and inflorescences that are too weak and too dense should be sparse; Cut off the non-flowering and non-fruiting branches on the upper part of the fruit, and the fruit will be exposed to reduce the harm of pests and diseases and promote the growth of the fruit.
2. Postharvest pruning is generally carried out after fruit picking and before autumn shoots germinate. Sparse the over-dense branches, weak branches, drooping branches, aging branches, broken branches and pest branches that affect light, so as to improve light conditions, preserve nutrients and promote the growth of remaining branches. In addition, the transverse branches between crowns and within crowns should be retracted to keep a certain distance between crowns; Cut off the rotten branches at the top, the long vegetative branches and the fruiting mother branches to promote the germination and growth of autumn shoots.
Common problems in mango planting: how to control mango diseases and insect pests
1, mango diseases mainly include anthracnose, soot disease, powdery mildew, gummosis, fruit rot and scab; The main pests are: tail moth (also known as borer and moth), leafhopper, poisonous moth, scarab and so on.
2, prevention and control measures:
(a) timely removal of diseased plants and residues, centralized destruction, clearing the garden with tree protectors, disinfection and sterilization, reducing the occurrence of pests and diseases, strengthening management and strict quarantine.
(2) 700-800 times of carbendazim or topaz for disease prevention, 1-2 times each time, and spraying at the time of new shoot pulling out and fruiting; When the new shoots are about 3 cm long, spray 800 times of trichlorfon and dimehypo, and spray 1 time every 7 7- 10/day, 2-3 times per shoot period. It is necessary to add a proper amount of new high-fat membrane to improve the curative effect.
Frequently asked questions about mango planting: How to make mango blossom?
Insufficient flowers in small years is an important reason for reducing production. In order to solve this problem, when the mango buds turn green in the last autumn, you can use the flower-promoting king 2 to prevent mango from sprouting in winter. In May-June of the following year, summer shoots are extracted and used again to inhibit plant growth and promote flower bud differentiation.
Common problems in mango planting: how to keep mango flowers and fruits?
1, bee pollination in flowering period, per hectare orchard 15 boxes; In the case of few bees, artificial pollination is used.
2. Spray Guaguozhuangdiling 1 time before flowering, young fruit stage and fruit expansion stage of mango to avoid the phenomenon of falling flowers and fruits due to insufficient nutrient supply. It has obvious effect on protecting flowers and fruits.
3. Mango will suffer from low temperature and rainy weather (the temperature is lower than 1 1.5℃) during the flowering and young fruit period, and it will seriously drop flowers and fruits for a long time. The ear is damaged and dies, and a large number of deformed fruits appear, which is easy to cause natural shedding. Spraying a proper amount of new high-fat film can reduce the adverse effects of rainy days and heavy rainfall on mango growth and help restore physiological vitality.
Common Problems in Mango Planting: How to Sparse Flowers and Fruits
Mango has a large amount of flowers and a large consumption of nutrients. Therefore, thinning flowers and fruits in time is one of the important measures for high yield and high quality. For trees with flowering rate above 80% of the last branch, 70% of the last branch is kept, and the rest is removed from the base. For larger inflorescences, the lateral flower branches at the base of 1/3 ~ 1/2 are cut off. When the length of floral axis is 5 ~ 10 cm, topping is carried out to promote lateral panicle. When young peanuts are big, they will be thinned for the first time. According to the bearing capacity and production plan of the tree, the fruit will be fixed when the young fruit is as big as the mature longan, and the rest will be deleted.