红花酢浆草春季昆虫群落结构研究

Study on Insect Community in Oxalis corymbosa Lawn during the Spring

系统调查了红花酢浆草草坪春季昆虫群落的情况。结果表明,昆虫群落有53个种,分属于12个目。其中,半翅目、鞘翅目等5类昆虫占昆虫群落的81.9%,它们是该昆虫群落的主体,起着决定性的作用。酢浆草岩螨是该群落的优势种,是综合治理的对象。红花酢浆草草坪春季昆虫群落主要指标在月份间存在着差异,5月昆虫种类多、数量大。

Based on a systematic investigation in the Oxalis corymbosa lawn during the spring, the composition and structure of the insect commu- nity were examined and analyzed. The results showed that there were 53 species belonging to 12 orders. Percentage of the species number of Hemiptera, Coleoptera, Homoptera, Orthoptera, Hymenoptera and Lepidoptera were 81.9 %, which had crucial effects on insect community in the Oxalis corymbosa lawn. Petrobia harti was the dominant species and the main pest to control in the community during the spring. There were differences of commu- nity parameters among different months. And dynamic analysis showed that there were biggest quantity and the richest species of insects in May, which indicated that May was a crucial period for pest controlling in the Oxalis corymbosa lawn.