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红铃虫是我国棉花生产上的主要害虫,各地积累了十分丰富的观测资料。但在世代划分,发生期,发生量的统计上由于缺乏明确一致的标准,妨碍了测报防治水平的进一步提高和研究的深入。在全国农作物病虫测报站的指导下,我们对历年来的红铃虫观测资料从世代划分,发生期,发生量级划分上进行了以下初步探索。一、关于世代的划分1、田间卵的世代划分红铃虫在荆州棉区常年发生,三代,历年棉田自现蕾起的卵量消长
Red bollworm is the main pest on cotton production in our country, and has accumulated very rich observation data all over the country. However, the lack of a clear and consistent standard in the generation, generation and occurrence of statistics interferes with the further improvement of the level of prevention and treatment of the survey report and the in-depth study. Under the guidance of the National Plant Disease and Pest Forecasting Station, we conducted the following preliminary exploration on the classification data of Red Bell’s Beetle over the years from generation to generation to generation to generation. First, on the generation of the division 1, the generation of the field egg division Pink bollworm perennial occurred in the Jingzhou cotton area, three generations, the cotton field since the beginning of the past years, the growth and decline of the amount of eggs