How to eliminate aphids on Chinese cabbage

4.5% beta-cypermethrin 1000 ~ 1500 times solution can be sprayed for extermination.

Pests and diseases of Chinese cabbage are serious in summer, which must be found and controlled as soon as possible. The main diseases are downy mildew and soft rot. To prevent downy mildew, 75% chlorothalonil 500-fold solution, 65% zineb 500-fold solution and 40% ethyl phosphate wettable powder 150 ~ 200-fold solution can be sprayed at the stage of fruiting. In order to prevent soft rot, agricultural streptomycin should be sprayed 2 ~ 3 times at the stage of fruiting.

Spraying 4000 times of 72% agricultural streptomycin sulfate soluble powder before or at the early stage of the disease should focus on mild plants and their surrounding plants, and pay attention to spraying petiole and stem base close to the ground.

Pull out the diseased plants in time, reduce the source of germs and prevent the spread. Pests include aphids and cabbage worms. Spraying 4.5% beta-cypermethrin 1000 ~ 1500 times can control it. Strictly eliminate aphids and prevent viral diseases.

Extended data:

Pesticide reduction depends on early treatment and small treatment.

The state proposes to strictly control the use of pesticides at present and in the future to benefit the country and the people. There is still a lot of work to be done on how to reduce the use of pesticides without reducing their effectiveness.

The investigation found that in order to reduce the use of pesticides, it is necessary to treat them early, such as preventing and controlling wheat sheath blight, red spider, aphid and armyworm. For example, 6.5 mu of wheat is planted from farmer Zhang Xinmei's house in the middle and late March every year, and fenvalerate compound, oxazolone (or jinggangmycin) and foliar fertilizer are mixed with water, which can effectively prevent and control overwintering aphids, armyworm and residual sheath blight.

At the peak of disease and pest reproduction, it is much stronger to use drugs once than twice. Her family uses twice as little medicine as other families, but there are no pests and diseases.

Secondly, pay attention to the prevention and control of small-scale pests. For example, when dealing with 4.5 mu of rice pests and diseases, her family applied pesticides in a small area on the seedling field before sowing, which not only greatly reduced the amount of pesticides used in the field and reduced the agricultural cost, but also played a better role than applying pesticides twice in the field.

For field rice and direct seeding rice, it is also suitable for the early stage of moth damage and early stage of disease. Although it is one or two times less than other farmers, it has also achieved good results. If it can be prevented and controlled at the same time in towns and even counties, the effect will be better.

Promote this drug concept of treating small diseases early and a good way to reduce pesticide use, so as to help achieve the goal of reducing pesticide use as soon as possible.

Baidu encyclopedia-aphids

People's network-pesticide reduction focuses on early treatment and small treatment.