长管蚜是我市小麦穗期的重要害虫,大发生年受害麦田的小麦籽粒千粒重可以降低10—20%,减产十分严重。近年来随着小麦单产的提高,危害逐年加重,成为经常需要防治的害虫,由于生产上特别需要明确小麦穗期蚜虫数量增长的规律,提出准确的预测预报办法,以指导好麦蚜的防治,为此目的我们开展了研究。一、调查内容与试验方法从4月1日开始,隔日进行一次麦田定株调查,除了解蚜量,有蚜株率变化外,还从田 Aphis gossypii is an important pest in the wheat heading stage of our city. The annual grain weight of 1000-grain weight wheat kernels can be reduced by 10-20% and the yield reduction is very serious. In recent years, with the improvement of wheat yield, the harm has increased year by year, becoming the pest frequently needed to be controlled. Because of the need to clarify the law of the growth of the number of aphids in the wheat spike stage in production, accurate prediction and forecasting methods are proposed to guide the prevention and control of wheat aphid, We did research for this purpose. First, the contents of the survey and test methods Starting from April 1, the next day conducted a survey of wheat plants, in addition to understanding the amount of aphids, aphid plant rate changes, but also from the field