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通过30a的系统调查表明,望江县以四代棉铃虫为主害代,棉铃虫各代次发生程度的主控因子不同,棉铃虫对常用农药表现出明显的抗性,保铃棉32B对各代棉铃虫均表现出良好抗性。对棉铃虫暴发因子进行了探析,认为棉铃虫近几年处于活跃期,旱地种植结构调整、梅天雨日雨量少、棉花生育期提早是棉铃虫暴发的主要原因。并从农业防治、推广抗虫品种、改进化防技术等方面提出了防治对策。
According to the systematic investigation of 30 years, the main generation of four generations of cotton bollworm in Wangjiang County showed that the controlling factors of generation degree of cotton bollworm were different. The bollworm showed obvious resistance to common pesticides. Bollworm 32B All generations of cotton bollworm showed good resistance. The bollworm outbreak factor was analyzed. It was considered that the cotton bollworm was in the active phase in recent years. The dry land planting structure was adjusted, the rainfall in the rainy day was less and the boll growth stage earlier was the main reason for the outbreak of cotton bollworm. And from the prevention and control of agriculture, the promotion of insect-resistant varieties, improve the anti-technology and other aspects of prevention and control measures.