How does summer soybean planting prevent and control black flies?

How to control Liriomyza huidobrensis by planting soybeans in summer? Please introduce the leguminous black miner, which belongs to Diptera and Liriomyidae. It is a widely distributed leguminous borer. From the installation of hatching larvae through the leaf veins, the young parts of the petiole are injected into the branches, the main stem and the pulp and xylem. If the prevention and control is not timely, the injury rate of bean plants in light years is 25-35%, and that in heavy years is 95-100%. If the damage is light, the bean plants are short and weak, and the number of branches and pods is less. If the bean grain is small, the whole plant of the injured bean plant will wither and break, and the yield can be reduced by 26-44%. First, the occurrence period: Liriomyza sinensis occurs 4 generations a year, especially the 2-3 generations do great harm to the adult of the winter tiger in the first ten days of June. The peak period of the first generation of larvae was at the end of late June, and the peak period of adults was at the end of late July and the beginning of August, and the peak period of adults was in the middle of August. The third generation larvae are in the late ten days, and from the end of flowering to the early pod stage of soybean, the peak period of adults is in the first ten days of September, and the peak period of the fourth generation larvae is at the end of mid-September, which is harmful to late sowing soybean and mung bean. Prevention and control measures: 1. Agricultural prevention and control. It is necessary to select early-maturing and high-yield varieties as far as possible, so as not to miss the early sowing in agricultural season, so as to improve the insect resistance of the plant so as to reduce the damage. two。 Sweet and sour booby trap. In the adult peak period, generally put in 375 grams of brown sugar, 500 milliliters of vinegar, 125 milliliters of liquor, 0.5 grams of trichlorfon plus 500 milliliters of boiling water, diluted and placed in the field, 6-9 a.m. and 5-7 p.m., can reduce the harm. 3. Chemical control. Mainly against adults and first egg larvae. Can use 10% great hero wettable powder 15-20 g / mu or 40% dimethoate EC 50-75 ml / mu, or 50% phoxim EC 50 ml / mu, spray 50 kg of water twice at the beginning of the flowering period of bean seedlings, once every 10 days; after the Summer Solstice emergence, spray once every 10 days, once every 10 days. Click to get more soybean planting technology click to get more grain and oil crop planting technology