Spring grape aphid prevention and control strategy

Agricultural control:

1, remove litter in winter, scrape off rough old bark, cut off the victim shoots, concentrated burning.

2, aphids many natural enemies, such as ladybugs, flies, grasshoppers, parasitic bees, etc., have a strong inhibitory effect on aphids. Therefore, it is necessary to spray as little as possible with broad-spectrum insecticides and to avoid spraying during natural enemies, in order to protect natural enemies and use natural enemies to eliminate aphids.

Chemical control:

1. Drying of medicaments: Use 1 part of 40% omethoate, add 1 part of multi-functional plant synergist, add 2 parts of water, mix and mix liquid medicine. Apply a brush with a brush about 10 cm wide on the trunk. If the bark is rough, you can scrape off old warp skin and apply it. After coating, wrap it with newspaper or plastic film.

2, trunk injection: on the trunk with an iron cone from the top down obliquely piercing, deep to the xylem, and then use 8 syringe injection 40% dimethoate, closed orifice, 2 to 3 days can be more than 95% Aphids kill.

3. Prevention and control of locust occurrence: In early spring, sprouting of grape buds and overwintering eggs hatching period is the key period for controlling peach aphid. At this time, a “dry stick” is sprayed with pyrethroid pesticides and 3% acetamiprid 2500-3000 times. Basic control of hazards. During the hazard period, the insect should be sprayed before the number of insect populations is greatly increased. It is possible to use 3000 to 4000 times of 10% imidacloprid, or 2000 times of 48% Leosmother emulsifiable concentrate, or 35% of endosulfan cream 1500 times, or 50% of Tuope 3000 ~ 4000 times the liquid can achieve the effect of controlling fruit tree aphids.

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