豆蚜豆蚜又叫苜蓿蚜、花生蚜,为豆科作物的主要害虫,主要危害豇豆、菜豆、豌豆、蚕豆、大豆、花生、紫云英、苕子、苜蓿等豆科作物,以成虫群集嫩芽、嫩茎、花蕊及豆荚处吸汁为害,致叶片发黄蜷缩、生长停滞,影响开花结荚。同时,虫子大量排泄的“蜜露”还可诱发煤烟病,使叶片被一层黑色霉所覆盖,影响植株光合作用,常造成荚果品质变劣、产 Bean aphid bean aphid, also known as alfalfa aphid, peanut aphid, is the main pest of leguminous crops, the main hazards of cowpea, beans, peas, beans, soybeans, peanuts, milk vetch, clam, alfalfa and other leguminous crops, Buds, tender stems, stamens and pod stigma harm, causing the leaves yellow curled up, the growth of stagnation, the impact of flowering pod. At the same time, large excretion of insects “honeydew ” can also be induced soot disease, so that the leaves are covered by a layer of black mold, affecting plant photosynthesis, often resulting in poor pod quality, production