二点委夜蛾为一种典型的生态型害虫,其主害代发生危害程度除了取决于1代蛾量外,还受各种生态因素的影响。本研究明确了影响二点委夜蛾发生的3类因子为温、湿度,生态调控措施应用面积及比率,秸秆腐熟程度。其中,日最高气温≥36℃和日平均相对湿度≤40%是影响发生的关键限制因素,明确了高温、干旱具体日数以及时间段,解决了一直干扰幼虫发生程度预报中的1代蛾量与2代幼虫发生为害不匹配问题。 Two-point Laminaria as a typical ecological pests, the main damage occurred in addition to its generation depends on the amount of moths, but also by a variety of ecological factors. In this study, three types of factors that affect the occurrence of Spodoptera litura were temperature and humidity, the area and ratio of ecological control measures, and the degree of maturity of straw. Among them, the daily maximum temperature of ≥ 36 ℃ and the average daily relative humidity of ≤ 40% are the key limiting factors affecting the occurrence of high temperature and drought specific number of days and the time period to solve the has been interfering with the occurrence of larvae in the first generation of moths and 2 generation larvae harm does not match the problem.