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温度是影响褐稻虱生存率、繁殖力的主要因子。在22℃、27℃、32℃不同控温条件下,世代存活率分别是50.89％、65.54％和10.51％;种群增长指数分别是139.49、210.02和0.23。在22℃、27℃时,温度对若虫的影响主要发生在一龄期,死亡率分别为19.57％和17.57％;32℃高温对若虫死亡率的影响主要发生在五龄期,达60.26％。在22℃、27℃、32℃时雌虫的平均产卵量分别为587.5粒、698.1粒和78.0粒,孵化率分别为79.43％、89.95％和4.92％。
Temperature is the main factor affecting the survival rate and fecundity of the brown planthopper. Under the conditions of 22 ℃, 27 ℃ and 32 ℃, the survival rates were 50.89%, 65.54% and 10.51% respectively. The population growth indices were 139.49, 210.02 and 0.23, respectively. At 22 ℃ and 27 ℃, the effects of temperature on nymphs mainly occurred in the first instars, with the mortality rates of 19.57% and 17.57%, respectively. The effects of high temperature at 32 ℃ on nymphs mortality occurred mainly in the fifth instar, reaching 60.26%. At 22 ℃, 27 ℃ and 32 ℃, the average fecundity of females was 587.5, 698.1 and 78.0, respectively. The hatching rates were 79.43%, 89.95% and 4.92% respectively.