Strengthening the field management of litchi in autumn and winter is an important part of capturing high yields of litchi in the coming year. Due to the relatively high temperature, litchi is easy to extract autumn shoots and consumes large nutrients, often resulting in no flowering results in the coming year, or less flowering results.
First, the suppression of the draw
When the last autumn shoots of the lychee turn green, use a blunt blade to cut the sap in the trunk, deep into the xylem, and then apply the fruit tree cationic active agent "foliar fertilizer". According to the growth of the lychee tree, the vigorously growing trees are used again every 10-15 days, and the weaker lychee trees are used once again for 25-30 days. In this way, the winter sputum is prevented from being pumped out, so that more flowers will bloom in the coming year, and the quality will be stable in successive years.
Second, pruning
After the lychee is harvested, it should be pruned in time, and the dead branches, weak branches, overlapping branches, Yin branches, overly branches, long branches, and diseased branches are cut off. The canopy is ventilated and light, enhancing photosynthesis and concentrated nutrients. In general, the pruning after the fruit should not be too heavy, the crown is not exposed, and the light is projected through the canopy with a money-like projection.
Third, supplement nutrition
After the fruit is harvested, the nutrient consumption of the tree is large, and nutrition should be supplemented in time. Attention should be paid to the use of organic fertilizers, which are applied after harvesting in the autumn and at the beginning of the spring. Litchi is mainly based on soil fertilization, and is supplemented by foliar spray fertilizer according to the actual needs of each phenological period. For example, before the flowering, the young fruit stage, and the fruit expansion period, spray the fruit of the fruit, 0.3%-0.4% urea, 0.3%-0.4% potassium dihydrogen phosphate, supplement the nutrition for the litchi fruit period, and make the fruit picking tree. The situation is still strong.
Fourth, pest control
The Phytophthora capsici is overwintered on the diseased leaves, diseased branches, fallen leaves, dead branches and trees in the soil around the trees. To eliminate the pathogens that are overwintering, the generals of the whole garden can be used to reduce the outbreak of the disease in early spring.
In short, do a good job in field management after litchi fruit picking, re-applying base fertilizer, supplementing tree nutrients, doing pruning, strengthening pest control, and making the litchi garden stable and productive in the coming year.
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