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一、引言小麦是我国北方各省主要粮食作物之一,由于小麦蚜虫的为害,在产量上常常造成一定的损失,有的年分甚至成灾。关于为害小麦蚜虫的种类和发生规律及其天敌群落数量的变动,对小麦蚜虫的发生消长,有否抑制作用?今后有否天敌可以利用等一系列问题,急待了解,因此,作者从1963月2月到6月中旬,在本校农场小麦田,进行小麦蚜虫发生消长及其天敌群落数量变动的调查分析。兹将调查分析的结果,报道如下。
I. INTRODUCTION Wheat is one of the major food crops in the provinces of the north of our country. Due to the damage caused by wheat aphids, it often causes some losses in output, and some years are even disastrous. As for the types and occurrence of wheat aphids and changes in the number of their natural enemies, whether wheat aphids can be suppressed or not is affected by the occurrence and decline of wheat aphids? Whether there is a series of problems that natural enemies can utilize in the future is urgent to understand. Therefore, From February to mid-June, the wheat aphid population growth and the number of natural enemies in the wheat fields of our school were investigated and analyzed. The results of the survey and analysis are reported below.