【摘要】 在室内观察了不同温湿度条件对甜菜夜蛾生长发育的影响。多元逐步回归结果表明 ,对甜菜夜蛾不同虫态的历期 ,仅温度与卵、幼虫、蛹以及成虫的历期显著相关 ,而温湿度与预蛹历期均显著相关 ;方差分析结果表明 ,不同温度和湿度下 ,甜菜夜蛾卵、幼虫和蛹的发育速率差异不显著。在同一温度下 ,甜菜夜蛾幼虫体长的增长率随湿度的升高而降低 ,但差异未达到显著水平 ;而在同一相对湿度下 ,甜菜夜蛾幼虫体长的增长率随温度升高而显著加快 ,幼虫的长度变化率与温度成极显著相关性。甜菜夜蛾成虫产卵量明显受温度和湿度的影响 ,同一温度、不同相对湿度的条件下 ,甜菜夜蛾成虫产卵量随温度升高而变化。更多还原

【Abstract】 The effect of different temperature and relative humidity (RH) on the development of Spodoptera exigua (Hübner)was measured in lab condition. The results show that the development periods of eggs, larvae, pupae and adults significantly correlate with different temperatures, and that of the prepupa significantly correlates with different temperatures and RH. The development velocity of S. exigua speeds up with the increasoment of the temperature,and its development period is cut short, and the quantity of oviposition of beet armyworm decreases at temperatures ranging from 20℃ to 30℃. The influence of humidity appears as follows:under the temperature of 20℃, its development period is prolonged with the humidity reducing. Such conditions as 20℃ and 55% RH, 25℃ and 75% RH,and 30℃ and 85% RH are favorable to the development of S. exigua. The growth rate of body length of the larvae of S. exigua. is significantly different at different temperatures under the same humidity, and it increases with the rising temperature. The effect of different temperature and humidity on the quantity of oviposition of beet armyworm is significant.更多还原