Fruit and vegetable pest control in autumn and winter

1, remove the debris leaves. In the fall and winter season, we combine cutting pruning to remove the diseased shoots and insect shoots, and weeds and litters near the orchard and its surrounding areas are cleaned up and burned or buried deeply to eliminate a large number of overwintering pests.

2, plough the garden. Ploughing in the garden 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.

3, scraping bark. Fruit trees, cracks, and cracks in trunks often contain a large number of wintering germs and pests. Practice has proved that winter scraping bark has a good control effect on a variety of pests and diseases. The fact that the farmer “has to eat pears and scrape bark” is the reason.

4, trunk white. The white coating of trunks in winter not only prevents the sunburn and frost damage of fruit trees, but also eliminates a large number of pathogens and pests that overwinter on tree trunks. The proportion of the whitening agent is generally: 10 parts of lime, 2 parts of lime sulfur, 1 part of salt, 2 parts of clay and 35-40 parts of water. The time of whitening is best twice. The first time after defoliating the fruit trees until the soil is frozen, the second time in the early spring.

5, trapping and killing insects. Using insect pests to select the sites for wintering, in the autumn, they will be tied to the big branches of fruit trees or broken into sack pieces to trap pests and larvae to overwinter and then kill them in a concentrated manner. According to the survey, this method has a 47% to 78% trapping effect on apple fruit borer and fruit borer, and it also has good trapping effects on red spider mites, date stickworm, spiny leaf miner, and leaf roller moth. Set role.

6, pharmaceutical control. During the dormant period, deciduous fruit trees are sprayed 1-2 times with 4%-5% diesel oil emulsion and 5 Baume degrees with lime sulfur. They attack various species of scale insects, red spiders and apple rot, and pear trees. Black spot disease, grape black spot disease, etc., all have significant control effects.