摘要
本文根据两个总体的Ｆｉｓｈｅｒ判别准则，对山东省惠民县１９６７～１９７７年共１１年二代棉铃虫发生程度的两类资料进行了数量分析，建立了判别方程：ｙ＝０．０１２７ｘ１－０．０２３１ｘ２，对历史资料与独立样本进行了回代验证与预测。
According to Fisher decision rule of diseriminatory model the authors analysed the data about the occurrence of the second generation of Heliothis armigera in 11 years of 1967￣1977 at Huimin,Shandong province.The results show that the fitting rate is over 90%,and that accuracy of forecast is reliable.
出处
《山东农业大学学报（自然科学版）》
CSCD
1996年第4期402-406,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
害虫
数学判别模型
种群动态
棉铃虫
insect pests
mathematical discriminatory model
population dynamics
