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稻瘿蚊的发生为害程度与诸多因素有关,本文作者根据多年的田间调查及本站的历史资料,选择六个因子用逐步回归法进行逐一筛选,选出关键因子建立预测式,预测稻瘿蚊主害代的发生程度,并总结了综合防治的经验。 1.发生程度的预测 影响稻瘿蚊发生为害程度的因素很多,经初步分析,在富川,稻瘿蚊主害代(第四代)的发生程度,在有虫源的前提下,与1—3月的平均气温,6—7月的降雨关系密切,初选六
According to many years of field surveys and historical data of this site, the authors selected six factors to be screened by stepwise regression, and selected the key factors to establish a predictive model to predict the occurrence of rice gall midge The incidence of the main victims, and summed up the experience of comprehensive prevention and treatment. 1. Degree of occurrence Predict the degree of occurrence of rice gall midge mosquito there are many factors, after preliminary analysis, in Fuchuan, rice gall midge main generation (fourth generation) of the degree of occurrence, with the source of the premise, and 1- The average temperature in March, June-July rainfall is closely related to the primaries six