对采日我国北纬２２～４３度，６个不同寄主的１１个松毛虫赤眼蜂种群，进行了寄主选择和适应力方面的比较研究。结果表明，对于参试的６种寄主卵所组成的３个不同寄主组合，种群间在对不同寄主的嗜好程度和适应力两方面部未存在显著差异。当米蛾卵与玉米螟卵同时存在时，各种群都明显喜好米蛾卵而很少与玉米螟卵接触，也很少寄生玉米螟卵。 A comparative study on host selection and adaptability of 11 Trichommatal Trichogramma populations from the 22 to 43 degrees north latitude and 6 different hosts in China was carried out. The results showed that there was no significant difference in the degree of host preference and adaptability among the three hosts for the three different hosts composed of the six host eggs tested. When the moth moth eggs and corn borer eggs co-exist, all groups are obviously like rice moth eggs with little contact with corn borer eggs, and few parasitic corn borer eggs.