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棉铃虫在本省常年发生4代,近几年来发生了不完整的第5代.棉铃虫是一种杂食性害虫,除危害棉花外还在其它作物上取食.摸清棉铃虫越冬蛹在不同作物田的分布数量以及在年生活史中最薄弱的阶段,结合农事操作,消灭大量越冬蛹,减少发生基数,降低发生程度是棉铃虫综合防治的措施之一.为此,从1994年底开始了调查研究,证明春季耕翻可显著减少棉铃虫越冬蛹的数量.
The occurrence of cotton bollworm in the province perennial occurred four generations, in recent years occurred in the incomplete fifth generation .He bolworms is a omnivorous pest, in addition to endanger the cotton but also in other crops to eat.Find the bollworm wintering pupae in different One of the measures for the integrated control of cotton bollworm is to reduce the distribution of cropland and the weakest phase of annual life history in combination with agricultural operations to eliminate a large number of overwintering pupae and to reduce the occurrence of occurrence and occurrence. Investigation and study showed that plowing spring can significantly reduce the number of overwintering pupae of cotton bollworm.