褐稻虱是晚稻的主要害虫之一,每年都使粮食造成一定的损失。一切生物都离不开环境条件,并受环境条件的影响。褐稻虱喜适温高湿,对温度敏感。我们通过对72～79年五代褐稻虱消长资料及72～79年8～11月气温、降雨量、雨日等气象资料的分析,初步认为:秋季变温日和褐稻虱发生量高峰日 Brown planthopper is one of the major pests of late rice, causing some losses to grain every year. All living things are inseparable from the environmental conditions, and environmental conditions. Brown planthopper Hi temperature and humidity, sensitive to temperature. Based on the data of the growth and decline of brown planthopper from the fifth generation in 72-79 and the meteorological data of temperature, rainfall and rainy day from August to November in the period 72-79, it is preliminarily thought that the peak day of autumn temperature change and the peak day of brown planthopper