【摘要】 根据室内及大田试验，讨论智利小植绥螨种群越夏问题。从结果可见：平均温度在２９～３１℃之间的６月上旬至７月中旬，智利小植绥螨种群比较稳定，７～８月当温度超过３２℃时智利小植绥螨种群数量骤降，室内试验下降率为７３．４％，室外为６６．８％。因此，进行智利小植绥螨抗热性品系的筛选是必要的。更多还原

【Abstract】 By Iaboratory and field experiments the oversummering of the preying mite(Phytaseiulus,persimills,pp)was studied.The results showed that the pp population de-creased abruptly from early June to mid July when the average temperature was from 29℃to31℃。And it decreased by 73.4% in Iaboratory and 66.8% in field when the average temper- ature was over 32℃during the second half of July and August.Therefore,it is necessary toselect the hot resistant strain of pp.更多还原