Five measures for re-grasping litchi after harvest

In June, some early-maturing varieties of litchi were harvested quickly, and they entered the period of postharvest management again. As a result, litchi consumes a lot of nutrients, and picking fruit and injuring branches also makes the tree suffer an "internal injury". Therefore, it should be managed in time after fruit harvest, so that litchi can get nutritional supplement as soon as possible, so as to lay the foundation for high yield next year. Otherwise, the tree potential can not be restored in time, the autumn shoot will not be put well, and there will certainly be no high yield next year. How to do well the management after fruit harvest? There are mainly the following five aspects: first, the first thing after picking fruit in the clear garden is to clean up the litter garden to achieve "Sanqing": first, to be clear about the withered branches and leaves. Collect all the withered branches, fallen leaves and fallen fruits in the garden and burn them centrally, so as to eliminate diseases and pests and prevent accumulation. The second is to remove weeds from the garden. For the weeds in the garden that not only grab fertilizer but also attract insects, they must be cleared thoroughly so as not to compete for fertilizer for litchi. The third is to remove the rubbish in the garden. For the garbage that cannot be used as fertilizer in the garden, it is necessary to clean up the litchi garden and keep the litchi garden clean, so that litchi can have a good growing environment. Second, after spraying the garden, the tree and the ground should be sprayed comprehensively once. In order to harm litchi, there are many diseases and pests, especially after this spring and litchi blossom and fruit stage of reproduction, the accumulation of diseases and insects are very large, and flower and fruit spraying is also limited. Therefore, after fruit harvest and clearing the orchard, it is necessary to spray pest control drugs once according to the main diseases and insect pests occurred in the fruit period, or to mix them once, such as 2.5% Kung Fu EC 2000 times plus Jinreidi moisture dispersible granules, etc., in order to reduce the accumulation of diseases and insect pests, reduce damage, and protect the normal growth of litchi. Third, after a year of pruning, the tree grows a lot of useless branches and consumes nutrition. therefore, it is necessary to prune litchi after fruit picking. cut off shady branches, cross branches, overdense branches, overgrown branches, overlapping branches, diseased branches, slender twigs and withered branches one by one, so as to reduce nutrition consumption, make litchi tree shape beautiful and scientific, grow into a high-yield crown, and lay the foundation for high yield next year. Fourth, after fertilization and fruit harvesting, it is particularly important to fertilize the trees reasonably. Litchi consumes a lot of nutrients, especially in high-yielding trees. In order to quickly restore the tree potential and make it grow normally and healthily, we should pay attention to this fertilization work and should not be hasty. After fruit harvest, nitrogen fertilizer is the main fertilizer, combined with phosphorus and potassium fertilizer. According to the experience of fruit growers, nitrogen fertilizer accounts for 50%, phosphate fertilizer accounts for 33%, and potash fertilizer accounts for 25%. In order to maintain the long-term fertilizer effect, more organic fertilizer should be applied, combined with available nitrogen fertilizer. Organic fertilizer is better than the dripping line outside the crown or the trench between rows is 60 cm deep and 50 cm wide. Green manure, leaves, weeds and soil manure, human and animal manure are applied layer by layer to ensure long-term fertilizer effect. Fifth, the growth characteristics of litchi under irrigation and drainage not only need a certain amount of water, but also afraid of being immersed. According to the actual situation of Liyuan, drainage and irrigation should be done well. The low-lying Liyuan should do a good job in opening canals and drainage, especially in summer, there is often torrential rain. If the drainage is not good, the Liyuan will be flooded with stagnant water, resulting in anoxia in the soil, causing poor root development and affecting growth. However, summer is also a high temperature season, and litchi orchards in high dry land are very prone to drought. At this time, attention should be paid to irrigation to prevent litchi trees from being short of water and drought. Places with water sources can draw water into the garden for irrigation, and places without water sources should also carry water to irrigate them. To maintain the normal growth of litchi trees.