近年来 ,随着农业种植结构的调整 ,土地利用率不断提高 ,与棉花间作或套作的经济作物种类繁多 ,面积由 80年代占棉区总面积的 1 0 %左右上升到目前的4 0 %以上 ,导致棉花棉铃虫世代重叠 ,峰次多 ,为害重 ,发生规律出现新的变化。为摸索棉田间套作物与近年来棉花棉铃虫重发的关 In recent years, along with the adjustment of agricultural planting structure and the continuous improvement of land use efficiency, there are a large variety of cash crops intercropped with or intercropping with cotton and its area has risen from about 10% of the total cotton area in the 1980s to 40% Above, resulting in cotton bollworm generation overlap, peak times, damage heavy, the occurrence of new changes in the law. In order to explore the cotton crop and cotton bollworm in recent years, the relapse of the closure