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麦田一代棉铃虫历年来在我省发生量不大,不曾引起过人们注意。有关麦田一代棉铃虫的研究甚少,对它的发生规律也很不了解。致使预测和防治缺乏理论基础和经验。一九九二年我省麦田一代棉铃虫大发生,不仅给小麦生产造成了严重的损失,而且导致二代和三代大发生,造成全省棉花大减产,部分棉田甚至绝收。及时防治麦田一代棉铃虫,压低二代虫源基数,确保棉花生产已变得非常紧要。为尽快摸清麦田一代棉铃虫的发生规律,指导预测预报和防治。1993年对我
The generation of cotton bollworm in wheat fields has not occurred in our province for many years and has not attracted any attention. Little research has been done on the generation of cotton bollworm in the field of wheat, and its laws of occurrence are also poorly understood. Resulting in a lack of theoretical basis and experience in prediction and prevention. In 1992, a large generation of cotton bollworms occurred in the wheat fields of our province. This not only caused serious losses to wheat production, but also caused major losses in the second and third generation, resulting in a substantial cotton yield reduction in the province and even partial failure of cotton fields. Timely prevention and control of the first generation of cotton bollworm wheat, down the second generation of insect base, to ensure that cotton production has become very important. As soon as possible to find out the occurrence of cotton bollworm generation rule, guide forecasting and prevention. 1993 to me