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叶象是麦田杂草天敌,取食繁缕,而繁缕又是我地麦田中主要杂草之一。几年来,本地区繁缕的发生和为害略有减轻,得到一定程度的控制,调查结果认为与叶象取食有一定关系。有关叶象发生与取食杂草的资料,国内还未见报道。为了丰富综合防治内容,更好地保护利用天敌,保持生态平衡,1984～1985年我们对叶象的发生与取食杂草的习性,作了一些初步的调查观察,现将结果整理如下。
Leaf elephant is a natural enemy of weeds in the wheat fields, feeding chickweed, and chickweed is one of the major weeds in wheat fields. Over the past few years, the occurrence of this area and the lesser of the management of the spiderweb in the area has been slightly mitigated and controlled to a certain degree. The findings of the investigation are believed to be related to the feeding of leaf elephants. There is no report about the occurrence of weeds and the feeding of weeds in China. In order to enrich the contents of comprehensive prevention and control, to better use and protect natural enemies, and to maintain ecological balance, we made some preliminary observations on the occurrence of weeds and the habits of feeding weeds from 1984 to 1985. The results are summarized as follows.