Winter fruit trees go into dormancy, growth stops or activities are very weak, and the main points of winter management are to do the following work:
Liquidation
After the fruit is harvested, the dead branches, fallen leaves, rotten fruit, and weeds that remain under the tree have become places where many germs and pests have hidden in winter. Therefore, the organization should clean up the pests in the fall to the time when the insects are released before the outbreak of the pests in the following year, and burn them in concentrated or high-temperature compost in the orchards.
Overturned
In winter, there are many pests of fruit trees that have been overwintering in the soil, such as peach fruit borer, and Zaobu. To do this, before the earth is frozen, the soil under the trees is turned over (25-35 cm deep), so that the wintering pests in the soil are frozen out or eaten by birds, and the pests on the ground can also be destroyed. Or the top soil pests pluck into the depths of the underground soil to suffocate them. Plowing the orchard will not only help improve the physical and chemical properties of the soil, but also help kill pests and diseases that overwinter in the soil.
prune
After one year of growth, fruit trees are liable to cause tree-like disorders. In order to form a good crown structure, prolong economic life, and achieve high quality and stable yield, it is best to prune deciduous fruit trees in the winter from late December to January. Generally young trees and tree branches are lightly sheared; aging trees and weak tree power are sheared; trees with moderate fruiting periods and moderate tree vigor are trimmed, and the growth and result adjustments in the following year are carried out.
Disease prevention
Orchards are more or less infected with pests and diseases during successive years of production. In the early stage of winter, insecticide sterilization should be based on the principle of prevention, prevention and control, so that fruit trees will not be attacked by diseases and insect pests, and fruit trees will thrive.
Frost protection
1, trunk Sokcho. 2, the tree disc soil, the fruit tree to the trunk as the center, the tree disc soil 10-20 centimeters, but in the spring after the temperature rise picked up around the main soil, exposing the root neck. 3. Apply whitening to tree trunks: 10-12 parts of quicklime, 2 parts of clay, 36-40 parts of water, 2 parts of lime sulfur mixture stock solution or 5 parts of raw liquid residue, 1-2 parts of salt, firstly used for hydration Open the lime, filter out the slag, pour the salt into the salt, pour the lime sulfur mixture and the clay, mix the main trunk and the main branch, and the coating amount is not downstream.
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