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黑斑叶象Hypera basalis(Voss),属鞘翅目象虫科叶象亚科叶象属。是麦田杂草天敌,专食繁缕Stellaria media(L.)Cyr.繁缕是我地区麦田中主要杂草之一。近几年来,由于叶象取食繁缕,麦子受繁缕的为害明显减轻。有关这方面资料,国内未见报道,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。1984～1986年,我们对叶象生物学特性和对繁缕的控制作用,进行了初步调查观察,现将结果报告如下。
Hypera basalis (Voss), a genus of Coleoptera, is considered as a subfamily. Is a natural enemy of weeds in the wheat fields, eating stellaria Stellaria media (L.) Cyr. One of the main weeds in the wheat fields in my area. In recent years, due to leaf elephant eating sprouts, wheat significantly reduced by the damage of the plume. No relevant information has been reported in China. In order to enrich the contents of comprehensive prevention and control, we should better protect and utilize natural enemies and maintain the ecological balance. From 1984 to 1986, we conducted a preliminary investigation on the biological characteristics of leaf elegans and the control effect on chickweed. The results are reported as follows.