摘要
运用判别分析法和逐步回归分析法，对１９８７～１９９７年棉铃虫历史资料进行研究分析，分别建立了棉铃虫３代卵发生量的判别函数式和多元回归预测式。其中，降雨量（Ｘ_３）是棉铃虫发生量多少的关键因子，经统计测验和复相关分析，均呈极显著水平。同时，分析比较了两种统计方法的优缺点以及在测报上的应用价值。
Precis - By using different analysis method and progressively regressive analysis method, the different function formular and polybasic returning calculating formular of the third generation eggs of the emergence size of the bollworm have been set up separately according to the historical data of the bollworm between 1987 - 1997. Rainfall (X_3 ) is the key factor of emergence size of the bollworm, which is extremely remarkable after statistical tests and fu- rther interrelated analysis .The advantage and disadvantage of both statistical methods and their practical use in mea- surement and prediction are also analysed and compared.
出处
《昆虫知识》
CSCD
1999年第5期263-265,共3页
Entomological Knowledge
关键词
统计方法
发生量
预报
statistical methods ,emergency size ,prediction
