What is the key management of the pear tree harvest in the coming year?

      The key management of the pear tree harvest in the coming year should pay attention to the following points:
Most of the main pests and diseases of pear trees are wintering in litter and grass, and become the source of pests and diseases in the coming year. Therefore, the winter management of pear trees determines the high yield of the coming year. The following technical guidance suggestions were given to the China Plant Protection Network experts:
1. After the defoliation until the soil is frozen, use the quicklime, clay, stone sulphur mixture, tree guard general, salt, water, and insecticide to make a whitening agent to whiten the trunk. It can effectively eliminate the insects such as pear star caterpillars and red spiders in the trunk and tree sews, which can reduce the number of insect populations and reduce the incidence of sunburn.
2. After clearing the garden, trimming and scraping the skin, trim the wound with the callus and anti-corrosion film protection, scrape the wound with the tree guard general disinfection, use the tree guard general to match the stone sulfur mixture, the pear round, red spider, pear Black spot disease and the like are controlled.
3. Deeply digging trenches and fertilizing under the canopy and about 1 meter outside the vertical part of the canopy. It can also be combined with fertilization to deepen the whole garden, improve the growth environment of the root system, and eliminate diseases and insect pests such as flower buds that are overwintering in the soil.
4. After the end of the pruning work, quickly scrape the rough skin, the skin, the cracked skin on the main stem of the pear tree, and concentrate the fallen leaves and the weeds of the orchard in the deep buried or burned, which can increase the organic The source of fertilizer can also reduce the source of wintering pests.