Seven-word tips for preventing persimmon from falling flowers and fruits

The girdling of the trunk or main branch of the robust tree can not only promote flower bud differentiation and early fruiting, but also reduce physiological fruit drop and advance fruit ripening period. The girdling is generally carried out in the early flowering stage, and the full flowering stage is completed, with a width of 0.3-0.5 mm. After peeling, the strips are bound with plastic strips (11395jue 70.00jue 0.62%) to maintain the humidity of the peeling mouth and promote healing. Shearing removes dense and ineffective branches during its growing period, leaving more branches on the windward side and less on the leeward side, so as to promote ventilation and light transmission. Generally speaking, after pruning persimmon trees, hidden buds will sprout in large numbers. In order to reduce its nutrient consumption, useless sprouts should be erased before Lignification. For long branches that have room for growth, especially for overgrown branches, they should be coring at 40 cm. When 2-4 fruiting branches are produced on the fruiting mother branch, three buds in the middle of the first two fruiting mother branches should be retained, and all the buds on the other fruiting branches should be removed. If the fruiting mother branch produces more than 5 fruiting branches, the first 3 fruiting branches should be retained, with 3 flowers in the middle of each fruiting branch, and the rest should be thinned out. Topdressing in the withered top period of branches in May and the fruit expansion period in July can not only obviously promote the fruit setting rate, but also increase the number and quality of flower buds in the next year. Spraying 500ppm gibberellin plus 1% urea at full flowering stage and young fruit stage can improve the nutritional status of flowers and fruits, prevent the delamination of persimmon stalks and stalks, enhance the nutrient absorption function of flowers and young fruits, stimulate ovary expansion, and increase fruit setting rate. During the period of rapid fruit expansion, spraying 0.3% Mel 0.5% urea solution and ammonium acid and other trace element fertilizers on the leaves can reduce flower and fruit drop. During its growing period, diseased fruits and insects were removed manually; 1000 times of 50% dichlorvos EC was sprayed in early June to eliminate persimmon stalks; in mid-June, 1 ∶ 5 ∶ 400 times Bordeaux solution, or 65% Dysen zinc wettable powder 500-600 times, or 2.5% green kungfu 1500 times + 1.5% germicidal 800 times solution, can control persimmon anthracnose, corner spot and round spot. When the larvae reached their peak in mid-late May, late July to early August, 2500 times of methamphetamine EC was sprayed mainly on the fruits, stalks and buds of persimmon trees, once every 10-15 days and 2-3 times in a row.