论文部分内容阅读
运用2因素2次回归正交旋转组合设计,研究了温度和光照周期对淡足侧沟茧蜂Microplitis pallidipes Szepligeti寄生率和性比的影响,并建立了回归模型,旨在为优化寄生蜂雌性比率、提高寄生率提供资料。主效分析表明,温度、光周期与寄生率呈抛物线关系,编码值为零水平取值时,寄生率达到最大;温度对雌性比率的影响大于光周期。交互作用表明,温度和光周期对斜纹夜蛾Spodoptera litura Fabricius幼虫被寄生率有明显的负交互效应,而对侧沟茧蜂雌性比率的交互作用不明显。通过对模型进行模拟,温度为28℃、光周期L∶D=12∶12时,寄生率达到最大(71.89%);温度为33.7℃、光周期为L∶D=12∶12时,雌性比率达最高值(0.57)。
The effects of temperature and light period on parasitism and sex ratio of Microplitis pallidipes Szepligeti were studied by using 2-factor-2 quadratic regression orthogonal rotation combination design. A regression model was established to optimize the parasitoid’s female ratio , Increase the parasitic rate to provide information. The main effect analysis shows that the temperature and the photoperiod have a parabolic relationship with the parasitism rate. When the coding value is zero, the parasitism rate reaches the maximum. The temperature affects the female ratio more than the photoperiod. The interaction showed that the temperature and the photoperiod had a significant negative interaction effect on the parasitism rate of Spodoptera litura Fabricius larvae, but the interaction between female and male larvae was not obvious. By simulating the model, when the temperature is 28 ℃, the parasitism rate reaches the maximum (71.89%) when the photoperiod L: D = 12:12; when the temperature is 33.7 ℃ and the photoperiod is L: D = 12:12, The highest value (0.57).