根据作者等1956年在湖南省调查研究结果,说明在焉尾松不同受害程度下,马尾松毛虫蛹重大小和幼虫断食后的生长发育、以及产生2、3代的多少,都有着密切的关系。为了进一步探索马尾松毛虫的发育消长和其寄主间的相关、为预测预报工作提供更多可靠的依据,特在江西省弋阳县等地,对这方面问题进行了比较全面的观察。兹将结果分述如下: According to the findings of the author in 1956 in Hunan Province, the results showed that there was a close relationship between the mass of pupae and the growth and development of the larvae after larval feeding, and the number of the second and third passage generations of P. massoniana. In order to further explore the growth and decline of Dendrolimus punctatus and the correlation between its host, to provide more reliable basis for forecasting and forecasting work, especially in Yiyang County of Jiangxi Province and other places, this issue has been more comprehensively observed. The results will be divided as follows: