How to control wheat aphids? Is it necessary to prevent it?

The best period of aphid control is generally in the middle and late April, and the northern wheat is in the middle and early May. During wheat heading, it is found that wheat aphids should be controlled by pesticides, and cypermethrin or imidacloprid can be sprayed with water to kill aphids. Generally, it can't be sprayed during flowering, which affects wheat yield. Wheat aphids reproduce asexually and overwinter between straw and weeds in winter. During the prevention and control, the crop straw is crushed and returned to the field, buried deep in the soil, and aphid eggs are destroyed by natural fermentation of the straw. Weeds should be removed before sowing, weeds in wheat fields should be sprayed with herbicides once, and then rotary tillage should be carried out to prevent aphids from overwintering.

Aphids are the main pests that harm wheat, especially ear aphids. Ear aphid began to harm wheat from late April to early May. After heading, they first gathered behind the leaves, and then moved into the ear grains, sucking juice made the leaves dry ahead of time, which seriously affected the wheat yield. In severe cases, it may reach more than 50%. There is a saying that the fertilizer of wheat aphid is white, and the control of wheat aphid is mainly in May. Relevant chemicals can be selected to control wheat armyworm. As soon as it is found, it should be sprayed in time, with the nozzle facing up, thoughtful and meticulous, and it is necessary to treat it early.

Aphids belong to asexual reproduction. As long as the temperature and humidity reach suitable conditions, the reproductive ability of aphids is still very strong. Aphids have fast reproduction speed and strong drug resistance, so it is necessary to prevent and control aphids as soon as possible. To take precautions in advance in April, you can spray the wheat fields with beta-cypermethrin and chlorfenapyr, and use one acre of land as two buckets of water. Pay attention when preparing soil, especially when planting corn in the last crop. Because now the straw has to be returned to the field, if it is not thorough, it will leave a good growth environment for aphids in winter, and there are a bunch of weeds on the roadside, which is also a good place for aphids to survive. After the spring, when the temperature reaches their breeding period, it will erupt in a large area.