摘要
运用回归分析探讨了小麦植株体内氨基酸、蔗糖、水分、温度、光照和禾缢管蚜种群数量等因子对禾缢管蚜翅型分化的单个影响和综合作用。结果表明 ,禾缢管蚜翅型分化的敏感虫龄为 3龄若蚜 ;单个因子对麦蚜翅型分化的作用可以线性回归方程 y=a+bx表达 ,多个因子的联合作用用多元回归方程 y=a+b1 x1 +b2 x2 +… +bmxm 拟合能基本反映各因子对禾缢管蚜翅型分化的影响。结果表明 :6个因子的共同作用以麦株体内水分和该蚜自身过高密度 (拥挤密度 )占主导地位。但分析的因子数不同 ,各因子的影响效应不同 ,由此说明影响禾缢管蚜翅型分化的因子是复杂的 。
The single and comprehensive factors including free amino acids, sucrose, content of water in wheat ears, temperature, light and crowding that influence the production of alatae on bird cherry\|oat aphid \%Rhopalosiphum padi\% were studied according to theory of variance. The results showed that sensitive instar on production of alatae was 3rd nymph. The relationship between some single factors and production of alatae of \%R. padi\% was \%y=a+bx\%. The synthetic influence of 6 factors was analyzed by the model \%y=a+b\-1x\-1+b\-2x\-2+…+b\-mx\-m\%. The content of water in wheat ears and crowding were the two most important factors. But, the main factors were affected by the numbers of factors and the factors of influence on production of alatae in \%R. padi\% were rather complex.
基金
江苏省"九五"重点攻关项目资助
关键词
禾缢管蚜
翅型分化
小麦害虫
营养
气候
密度
Rhopalosiphum padi\%
production of alatae
factors of correlation
