【摘要】 2007年在新疆喀什地区莎车县利用二次正交旋转组合设计得出新疆喀什地区第一、二代棉铃虫复合为害与产量损失的回归模型,Y=13.40232+4.65075X1+4.999563X2+0.624735X12+3.876875X22-1.93X1X2。结果显示:一、二代棉铃虫交互作用不明显,得出每代棉铃虫的为害效应模型,一代Y′1=13.40232+4.65075X1,二代Y′2=13.40232+4.999563X2+3.876875X22。根据模型,制定了喀什地区第一、二代棉铃虫的防治指标。更多还原

【Abstract】 In 2007,the rotation model of the cotton complex damage and the output less of the first and second-generations of Helicoverpa armigera Hubner in Shache county,Kashi district,Xinjiang was obtained by applying square regressive and orthogonal rotation designs:Y=13.402 32+4.650 75 X1+4.999 563 X2+0.624 735 X12+3.876 875 X22-1.93 X1X2.The results showed that the interaction between first and second generations of Helicoverpa armigera Hubner was indistinctive: Y′1 =13.402 32+4.650 75X1,Y′2=13.402 32+4.999 563X2+3.876 875X22.According to the model,the control index of the first and second-generation of Helicoverpa armigera Hubner was formulated.更多还原