Winter peach aphid prevention and control technology
In recent years, due to the serious drought in winter and spring, early spring and winter flower buds and new roundworms are seriously endangered, which has caused a certain impact on the yield and quality of winter peaches. The main pests of peach trees are peach aphid, peach whitefly and peach aphid. Among them, peach aphid is the most common hazard. The peach aphid occurs 10-20 generations a year. It is miscellaneous. In the winter, the eggs use buds on the branches, gaps between the bark and branches, and winter. When the buds begin to hatch the next time, the eggs start to colonize and damage on the buds. After flowering, the leaves are transferred again. Hazardous flowers and leaves are bred by parthenogenetic reproduction during this hazardous period. The back of the victim's leaf curls, causing a large number of falling flowers and leaves. The winter peach production has caused a certain impact. Control methods: 1. Remove weeds from orchards in the winter, scrape off old bark, and spray 5 degrees lime sulfur before sprouting to kill aphids overwinter eggs. 2, after the Xiehua, spray once a net 2000 times liquid or spray 5% high-quality liquid Chrysanthemum EC 2000 ~ 3000 times for control. 3, to protect the seven-star ladybugs, grasshoppers and other natural enemies. Try not to spray pesticides during the active period of natural enemies.
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