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大豆是我区的主要油料作物。在豆田内发生危害较重的食叶性害虫,主要有豆天蛾和豆田二代造桥虫。这些害虫在豆田内的消长规律基本一致,常混合发生。由于食量各不相同,给准确预报害虫的发生程度造成了困难。为解决这一问题,笔者于1984年对豆天蛾、银纹夜蛾、坑翅夜蛾和云纹夜蛾四种害虫进行了室内饲养。通过计算各种害虫的平均食叶量,然后确定食量最小的一种害虫为
Soybean is the main oilseed crop in my area. Occurred in the bean fields more serious pests of leafy insects, mainly beans and moths and bean field two generations of bridge worms. The growth and growth of these pests in the bean field are basically the same, often mixed. Due to the different appetite, it is difficult to predict accurately the occurrence of pests. In order to solve this problem, the author carried on the indoor rearing to four kinds of pests such as Beet armyworm, Spodoptera frugiperda, Helminthorn hawk and Tenebrio molitor in 1984. By calculating the average leaf weight of various pests, and then determine the minimum appetite for a pest