What is the effect of late-eyed mushroom mosquitoes on green onions? What pesticides can be used for control?

It's hard to know what it is by looking at the name, but the black-haired maggot knows. In fact, he is the larva of the late-eyed mushroom mosquito. Everyone is familiar with the hazards of garlic, onions and green onions. Biting the young stems, buds and leaf sheaths of plants makes them rot and yellow, and there are many prevention methods. This will affect crops such as onions and garlic. The drug chosen must be aimed at night-vision mosquitoes. This time is generally spring and autumn, with spring around the end of April and autumn at the end of 10. There are also many ways to spray medicine. It can be sprayed directly, smoked in the air and soaked in the roots. Another method is a general method about soil. The unreasonable use of manure is the main reason for the increase of waste oil. If the manure used is not ripe, it is easy to put it into the soil to cause the reproduction of waste oil and affect the growth of vegetables. How can vegetable farmers effectively prevent maggots in production?

It is best for vegetable farmers who compost with outer film to mix the purchased fertilizer with grass, mud, miscellaneous fees, manure, manure and calcium superphosphate, moisten it with water and mix it evenly, hold it in their hands, and disperse it when it falls from 1 meter. Moreover, it is best to pile Mongolian foam 80- 100 cm high and then cover it with plastic film to make it ferment smoothly. Generally speaking, the tidal observation time is 30-40 days in summer and 50-60 days in spring and autumn. At the same time, adding corrosive agents such as high fertility and manure treasure into manure to improve the decomposition speed of manure can greatly reduce the amount of eggs laid.

Combined with high temperature stuffy film to promote fecal corrosion. Put the immature manure into the soil in summer fallow period, close the tuyere, and raise the warehouse temperature to 60 ~ 70, and keep it stuffy 15 days. When the soil is treated with stuffy agent, the manure should be applied to the field in advance so that the soil treatment agent can kill the maggots in the manure together. Belt conveyor is one of the most common diseases of crops, and crop residues may also induce belt conveyor. Using belt conveyor to apply specific drugs can greatly reduce the use of pesticides when dealing with belt conveyor. The specific medicine for treating maggots is the best choice to reduce the cost of medicine, plant green pollution-free vegetables and develop green agriculture. For reference and choice, the function of maggots and anti-submarine flies-patented antivirus-homogeneous peptide, efficacy: it has obvious preventive effect on crop root rot and stem rot. It has a considerable preventive effect on highly antiviral, crop lobular virus, cucumber mosaic virus, root rot of scallion, gray mold of scallion, anthracnose of ginger, leaf blight of ginger, late blight of potato and various virus diseases.

Biody maggot pure high goat syndicate: efficacy insecticidal speed: it has strong stomach toxicity, contact killing and fumigation effects, and has fast insecticidal speed and good effect. 50% enemy acid-maggot purification-white turtle: efficacy: an ultra-efficient insecticide with five functions of strong contact killing, stomach poisoning, fumigation, avoidance and systemic conduction, with magical effects such as low dosage and fast killing speed. Tianrun Powder, a high-fat compound microbial fertilizer for controlling soil maggots: Efficacy: This product contains many beneficial bacteria such as tall grass, wild vegetables and Bacillus. Combined with highly active insect control factors, it can effectively control the occurrence of pests and diseases.