麦蚜天敌优势种群的评价

Evaluation on predominate species of natural enemies of wheat aphids

根据系统调查和大田普查结果,通过对天敌与麦蚜在数量、时间、空间上的追随关系进行相关分析,表明淮北麦区七星瓢虫是麦田主要优势天敌,龟纹瓢虫和蚜茧蜂是次要优势天敌。

The systemic field surveys and large scope field investigations were carried out,Analysis on the relaying correlations of natural enemies with wheat aphids in term of population,time and spaces revealed that Coccinella septemspinosum Linnaeus was the most predominate sp ecie of natural enemy in Huaibei wheat region,and Propylaea japonica and bacon wasps were the second predominate natural enemies in wheat fields.