各种环境因子对马尾松毛虫(Dendrolimus punctatus Walker)种群死亡率、生殖力的影响已被许多学者的研究证明,但环境因子对幼虫雌性比有否影响,尚未有过报道。1983年3月以来,我们在区分雌雄幼虫的基础上,对马尾松毛虫雌雄幼虫作了食叶量、耐饥能力、抗药力的比较试验,现将 The effects of various environmental factors on the mortality and fecundity of Dendrolimus punctatus Walker population have been proved by many scholars’ studies. However, it has not been reported whether environmental factors affect the female ratio of larvae. Since March 1983, on the basis of discriminating between male and female larvae, we made comparison experiments on male and female larvae of Dendrolimus punctatus in terms of leaf feed, hunger resistance and resistance