药剂防治大豆食心虫大豆食心虫以幼虫蛀入豆荚食害豆粒，常年虫食率约为１０％～２０％，严重时可达３０％～４０％，而且影响大豆的品质。该虫１年发生１代，以未龄幼虫在土内作茧越冬。翌年７月下旬至８月中旬化蛹，８月中下旬出现成虫，８月下旬为产卵高峰期，以３～５... Preventing Soybean Gastrointestinal Soybean Gastroenteritis The larvae eaten into the bean pods to damage the beans. The annual pest feeding rate is about 10% ~ 20% and in severe cases it can reach 30% ~ 40%, which also affects the quality of the soybean. The worm occurs 1 generation a year, with less larvae in the soil for cocoon wintering. The following year in late July to mid-August pupation, adults appear in late August, late August to spawning peak to 3 to 5 ...