In May, the chestnut is in the flowering period, and the new shoots grow vigorously. The cultivation management should combine its growth characteristics and physiological needs, try to control the vegetative growth, promote the reproductive growth, ensure the flower is good, and the fruit is strong, in order to improve the fruit eating quality and improve the fruit commodity value. Lay the foundation. The management points are as follows: First, topdressing supplements nutrition. Spraying 0.3% borax + 0.3% urea solution during flowering can increase the fruit setting rate. After the flower, the fertilizer is applied, mainly nitrogen fertilizer and boron fertilizer. Generally, the urea is applied to the large tree by 2.5 to 5 kg/plant, and the young tree is applied with 0.25 kg/plant. The amount of boron fertilizer applied is calculated according to the projection area of ​​the crown of 15 g/m2, and it is easy to cause fat damage. After fertilization, it is necessary to fill the water in time. If there is no irrigation condition, the technology of hole storage and fertilizer water can be used. In the young fruit period, apply phosphorus and potassium fertilizer. The second is to remove the nutrients. When the male flower grows to 3 to 5 cm, spray 1000-1300 times of the sedative alcohol to remove excess male flowers and save nutrients for fruit setting. Generally, 13 kg of water per vial is sprayed on the foliar surface to be even and detailed. The third is summer trimming. Shallow branches to open the light, to remove the long branches, overly branches, and weak branches in the canopy, to increase the light in the tree; to pick the heart and promote the flowers, the result leaves 1 to 3 leaves in the front of the fruit to pick the heart, the male flower branches from the 10th ~ 20 leaves were topped, and the development branches were topped from 13 to 18 leaves. The fourth is pest control. Insect pests should focus on the control of chestnut mites, red spiders, chestnut buds, scorpion caterpillars, and savanna caterpillars. Spraying the drug with imidacloprid 2000-3000 times solution, Nisolan 1600-2000 times solution, 4.8% 哒螨çµ1000~ 1500 times liquid, cyhalothrin 3000 times solution. Diseases should focus on prevention of ring rot and rot disease. Spraying pharmacy with DuPont Fuxing 8000 ~ 10000 times liquid, or wheel pattern No. 1 800 times liquid. The fifth is cultivating loose soil and pressing green manure. Before the arrival of the rainy season, cultivating and over-grazing can improve the root growth environment, increase the soil organic matter content, and improve soil permeability. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Guangzhou Zhongzhinan Supply Chain Co.,Ltd. , https://www.gzzhongzhinan.com