景德镇市水稻螟虫在早稻苗期以二化螟居多,据十六年灯下观测统计,第一代二化螟蛾量占三种螟虫总量的57.4％。由于二化螟越冬场所多,经冬、春低温多雨等打击,田间残存密度较低,要掌握其发育进度,工作量大而困难。为了确切测定第一代二化螟蛾始盛期,以便抓住防治时机。笔者根据温发对螟蛹的影响而表现在羽化日期早晚不同的规律性,运用生物统计的方法,将历史资料 The population of rice stem borers in the early rice at the seedling stage of Jingdezhen was mostly in the population of the second trimester of rice stem borer, accounting for 57.4% of the total of the three stem borer moths in the first 16 generations. Due to the overwintering sites of the rice stem borer, winter and spring, cold and rainy hit, low residual density in the field, to grasp the progress of its development, the workload is large and difficult. In order to accurately determine the initial generation of two moths in order to seize the opportunity to control. According to the effect of warm hair on the stem borer pupal performance in the early and late emergence of different regularity, the use of biometric methods, the historical data