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对密西西比三角洲全部农地不到5％的面积在春季进行两次割草,可以大大减少棉株上棉铃虫和菸青虫后期群体的增加。按照农业研究局昆虫学家阿里·斯达德巴契的说法,四月下旬和五月中旬,在密西西比三角洲割掉田埂和路边的杂草,将可以消灭很高百分率的这两种害虫的第一代。春季,在棉花出苗前一个半月左右,越冬蛹羽化为成虫。在这段期间,成虫和它们的第一代幼虫(第一代的后代),依靠野生寄主植物生存和繁殖。六月上旬,第一代成
Mowing two mowing areas in less than 5% of all farmland in the Mississippi Delta in the spring can significantly reduce the increase in late-stage bollworm and tobacco budworm populations on cotton plants. According to the Agricultural Research Service’s entomologist Ali Sidadepache, the removal of fields and roadside weeds in the Mississippi Delta in late April and mid-May will eliminate a high percentage of both pests First generation In spring, about one and a half months before emergence of cotton, the overwintering pupae emerge as adults. During this time, adults and their first generation larvae (the first generation of offspring) rely on wild host plants for survival and reproduction. In early June, the first generation