First, sapling management 1 After planting the chestnut seedlings should be watered in time, after the regular watering according to soil moisture. 2 Weeds breed rapidly. To reduce weeds and trees from competing for water and competing for fertilizers, weeds should be cleared in time. 3 Covered with harvested straw or grass under the tree. 4 Spray tree body with 0.3% urea and potassium dihydrogen phosphate mixture every 15 days to increase tree nutrients. 5 It is advisable to use legumes, peanuts and other legume dwarf crops. It is strictly prohibited to plant sorghum, corn and other high stalk crops. Second, Grafting Tree Management 1 For the re-growth of the tree in June, the young trees shall be wiped off in time; the high-risk trees shall not be completely removed when removing the sprouts, and the parallel branches or larger branches Sprouts should keep 2-3 leaves short and cut, increase leaf area and prevent sunburn. In the middle of 26 months, the new shoots were fixed in time to avoid being blown by the wind; when the stents were tied, they must be firmly tied, and at the same time, the new shoots growing to 20 cm were continued to be picked up and the branches were promoted. Third, close planting garden management 1 watering and fertilizing: there are watering conditions should be poured twice the water, that is, before and after flowering water, combined with watering underground fertilizer. Spray fertilizer is mainly based on urea or potassium dihydrogen phosphate, with a concentration of 0.3%. 2 Summer Scissors: For upright branches with smaller angles, pull them apart to increase the light in the tree body. Heavy stagnation of male flower branches, leaving 2-3 leaves after short cutting to prevent sunburn. All thin and thin branches of the inner church were removed. Fourth, pest and disease prevention at any time monitoring of pests and diseases. After grafting, the chestnut tree is easily damaged by scarabs and other leaf-feeding pests. With the growth of the tree, red spiders and aphids will also harm the leaves at any time and should be promptly controlled. Pharmacists should use biological agents or biomimetic agents.
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