麦圆蜘蛛和麦长腿蜘蛛在徐州专区每年都有发生,但由于发生和防治方法不同,如何准确地调查虫情,做好预报,在防治上是一项很重要的工作。以往的调查方法一般都是根据两种麦蜘蛛一日中不同的动活时间,进行地上部分虫量的目测统计,或将麦蜘蛛击落于白纸或玻板上统计虫数。但常因时间、气候、操作技术和 Wheat round spiders and wheat long legs spiders occur in the Xuzhou area every year, but because of the occurrence and prevention methods are different, how to accurately investigate the worm, good forecast, in the prevention and control is a very important task. In the past, the methods of surveying were generally based on the visual statistics of the above-ground part of the amount of activity of the two wheat spiders during the first day or the number of insects on the white paper or the glass board. But often due to time, climate, operating technology and