Abstract: Based on the data from Jiaxing, Zhejiang Province in 1976-1988, the relationship between population dynamics of brown planthopper Nilaparvata lugens stal and temperature was studied. Simulation study indicated that temperature was one of the key factors affecting population development after immigration; the only temperature differents among years could cause 5 and 10-day discrepancies in peak time, and 1.63 and 2.25 times discrepancies in peak size, respectively to the fourth and fifth generation; the effects of temperature in September on population growth was more important than that in August; while the mid-September was the key period for temperature effects. The results are consistent with the historical data in Jiaxing, Zhejiang. Meanwhile, simulation analysis revealed that the effects of temperature on population dynamics were related to both characteristics of population development and seasonal variance of temperature at a particular area, as well as biology of brown planthopper.

Key words: Nilaparvata lugens, Population dynamics, Temperature

摘要： 对浙江省嘉兴市新丰乡1976~1988年褐飞虱种群与8、9月当地气温的关系进行了研究。模拟研究表明气温是影响褐飞虱迁人后种群发展的重要因子，单一年度间气温的差异可分别导致四、五代高峰期5和10 d的差异， 高峰虫量1．63和2 25倍的差异；9月份气温对褐飞虱种群增长的影响大于8月份的气温；而9月中旬是发生上述影响的关键时期，这一结果与嘉兴市历年发生实况相符。模拟分析也揭示了气温对种群动态的影响不仅与褐飞虱生物学特性有关， 亦与某一特定地点的种群发展和气温变化特点有关。

关键词: 褐飞虱, 种群动态, 气温, 模拟, 水稻