Fruit and tree diseases and pests seriously affect fruit production and quality. In the autumn, the pests that eliminate fruit trees can receive a multiplier effect. There are mainly the following methods for exterminating fruit trees in autumn:
1. Inducing and killing and killing insects: Using insect pests to select the sites for wintering, in the autumn, they will tie grass or break sacks on large branches of fruit trees to trap pests and larvae for overwintering and then concentrate on killing.
2. Removal of fallen leaves: In autumn and winter season, combined with pruning to remove the diseased shoots and insect shoots, and remove the weeds and litters near the orchard and its surrounding areas, and treat them in a concentrated manner, which can eliminate a large number of overwintering pests.
3. Farmland: Farmland ploughing is not only an important measure to improve the soil and promote the production of fruit trees, but also an effective method to eliminate overwintering pests and diseases. Through ploughing, the deep soil pests and pathogens can be turned to the surface and frozen to death, dry or eaten by natural enemies, so that buried insects can not be feathered and suffocated, thereby reducing the overwintering base.
4. Chemical control: In the fall, the larvae of the calf larvae are in danger of attacking the fruit trees. The fruit tree trunk was found to be damaged. After removing the insect feces, the poisonous swab was inserted and the hole was closed with mud. It was also possible to inject a large amount of 80% dichlorvos-emulsion 1500 times directly into the wormhole and seal the hole with mud; for the larvae in the shallower parts. Digging, picking, and assassination can be done with wire.
5. In the deciduous dormancy period of fruit trees, spraying 1-2 times of lime sulfur mixture has a significant control effect on a variety of pests and diseases harmful to fruit trees.
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