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防治水稻二化螟需预测越冬代二化螟成虫盛发期,再根据当地的温度湿度和卵的历期推算卵的孵化盛期、第一代幼虫的钻蛀盛期,在孵化盛期或孵化盛期后3～6天内,消灭第一代幼虫及部分越冬代成虫和卵,把二化螟消灭在钻蛀之前。我们于1989～1991年大量剥茬,观察越冬代二化螟的发育进度,积累了些资料,现根据0厘米地温、相对湿度,用多元回归分析法,预测越冬代水稻二化螟成虫的发生期。1 方法和资料1989～1991年我们都选同一块地,定时(每隔2～5天)大量剥茬,观察二化螟的发育进度(资料整理见表1,气象资料见表2)。
Prevention and control of rice stem borer need to predict the prevalence of overwintering generations of rice stem borer adults, and then according to the local temperature and humidity and egg life expectancy egg incubation peak, the first generation of larvae borer infancy, during incubation or Within 3 to 6 days after the incubation period, the first generation larvae and some overwintering adult worms and eggs are eliminated, and the striped stem borer is eliminated prior to boring. In 1989 ~ 1991, we stubbled a lot and observed the development of overwintering Chilo suppressalis, and accumulated some data. Based on the 0 cm ground temperature and relative humidity, multiple regression analysis was used to predict the occurrence of adult rice larvae of Chilo suppressalis period. 1 Methods and data 1989 to 1991 we choose the same piece of land, regular (every 2 to 5 days) a large number of stubble to observe the development of Chilo suppressalis progress (data compilation in Table 1, meteorological data in Table 2).