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该文通过对白桦尺蠖PhigaliadjakonviMoltrecht的林间调查和室内饲养观察 ,测定了幼虫各龄期的头壳宽度、卵和幼虫的发育起点温度和有效积温、各龄幼虫食叶量、林分的危害程度和害虫发生数量的关系。为该虫的预测提供了一些有价值的方法
In this paper, we observed the width of head shell, the developmental threshold temperature and effective accumulated temperature of eggs and larvae, the amount of leaf larvae of each larvae and the degree of damage of the forest stands by the forest surveys and indoor feeding observations of Phigaliadjakonvi Moltrecht And the number of pests. It provided some valuable methods for the prediction of this pest