论文部分内容阅读
在室内采用叶子圆片培养基饲养棉蚜的方法,研究不同温度(32、34、36、38、40℃)和密度(每皿5、25、50、75)对棉蚜死亡和繁殖的影响.结果表明:随着温度的升高、密度和持续天数的增加,棉蚜累计死亡率呈上升趋势.互补重对数模型模拟结果表明:β值随着密度的增加而减小,说明随着棉蚜密度的增加,温度对棉蚜的作用减弱;不同持续天数的γ_j值不同,说明棉蚜条件死亡率受温度和作用时间的共同影响.双因素方差分析结果表明,温度和密度显著影响棉蚜的繁殖率,且存在交互作用.32～36℃范围内,棉蚜繁殖率随密度的增加呈降低趋势,40℃条件下,不同密度棉蚜繁殖率没有差异,说明随着温度的升高,密度对棉蚜的作用逐渐减弱.即在不同的温度区间和密度范围内,温度和密度对棉蚜的作用大小、主次发生了改变.研究结果为棉蚜种群监测、预警和改进害虫控制方法提供了科学依据.
The method of feeding aphis gossypii with leaf disk medium indoors was used to study the effects of temperature (32,34,36,38,40 ℃) and density (5,25,50,75 per dish) on the death and reproduction of cotton aphid The results showed that the cumulative mortality of cotton aphids increased with the increase of temperature, density and duration of day.The simulation results of the complementary log-log model showed that the value of β decreased with the increase of density, The effect of temperature on cotton aphid was weakened with the increase of cotton aphid density.The γ_j values of different persistence days were different, which indicated that the conditional death rate of cotton aphid was affected by both temperature and duration of action.The results of two-way ANOVA showed that temperature and density significantly affected cotton Aphid reproduction rate, and there is interaction between the range of 32 ~ 36 ℃, cotton aphid reproduction rate decreased with the increase of density, 40 ℃, the density of cotton aphid no difference in reproductive rate, indicating that as the temperature increases , The effect of density on Aphis gossypii decreased gradually, that is, the effect of temperature and density on Aphis gossypii changed in different temperature ranges and densities, the primary and secondary changes occurred.The results showed that monitoring and early warning of cotton aphid population and improving pest control Method provides the section Learn from.