棉铃虫是我场棉花上的主要害虫,多年来我场为有效地控制棉铃虫的为害,普遍推广了几种复配农药品种,取得了良好的效果。随着使用遍次的增加,棉铃虫的抗性增强,通过试验筛选替代品种,合理轮换农药显得尤为迫切。为此,1997年我们对百虫死等几种农药品种进 Cotton bollworm is the main insect on cotton in our field. For years, in order to effectively control the damage of cotton bollworm, we popularized several kinds of compound pesticides and achieved good results. With the increase of using times, the resistance of H. armigera increased. Screening of alternative varieties through experiments showed that the rational rotation of pesticides was particularly urgent. To this end, in 1997 we die of insects such as several kinds of pesticides into