Cultivation and weeding. Combine with applying winter fertilizer to eradicate weeds in the pear orchard, bury it deep in the fertilizing nest, and then deep turn the pear orchard. Plow shallowly under the canopy, turn 20~30 cm deep between rows, and treat the plots with edges and ditches to loosen the soil and eliminate overwintering insect eggs.
Apply full winter fertilizer. Before the deep winter, the pear orchard should be deep-turned, and adequate winter fertilizer should be applied. The fertilizer amount accounts for 30% of the total annual fertilizer application, mainly organic fertilizers such as decomposed oil cake fertilizer and residue fertilizer.
Organize pruning. For young pear orchards that have been planted for 1 to 2 years, on the basis of pulling branches in summer that year, when pruning in winter, take measures such as pulling branches, supporting branches and hanging branches on the 2~4 branches that have been cultivated to keep them 60 The opening angle of °~70° is to relax the tree's vigor and form a dwarfed crown; for adult fruiting trees, pruning is carried out by thinning, short cutting and renewing and retracting, so that the crown is ventilated and light, and the layers are distinct, reaching the inside and outside The purpose of the result.
Pest control. Remove the dead branches and fallen leaves near the pear orchard, cut off the pests and branches, scrape off the tree trunks and bark, burn them or bury them in a concentrated manner; before the winter, make 1 or 2 small grass handles with straw and place the branches of the pear , To attract pests to overwinter on the grass stems. When the spring starts, all the grass stems are burned together, which can eliminate a large number of overwintering pests; after the pear trees fall leaves to before they germinate, the pear orchard should be generally sprayed with 2~3 Baume lime sulfur mixture 1 ~2 times, and whiten the trunk with the used medicine residue. Whitening the trunk can reduce the occurrence of sunburn and eliminate the wintering pear star caterpillars and red spiders in the trunk and tree crevices. The proportion of whitening agent is: 10-12 parts quicklime, 2 parts clay, 2 parts lime-sulfur mixture, 1~2 parts salt, 36-40 parts water, and some pesticides can be added. Dissolve the lime with hydration, Filter out the ash, pour in the dissolved salt, then pour in the lime sulfur mixture and clay, and mix well. Whitening should be carried out after the leaves are fallen to before the soil freezes. It is advisable to apply it so that it will not run off and will not warp or fall off after drying.
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