棉叶蝉(Empoasca biguttula Shiraki)是棉花后期主要害虫,年度间发生量差异较大,大发生年份影响棉花秋桃盖顶,使棉花产量减少,品质降低。目前,尚未见到棉叶蝉空间分布型的报道,为准确地掌握田间种群数量,更好地指导防治,作者于1987年在东至县大渡口棉区对棉叶蝉空间分布进行了调查。一、调查研究方法(一)于9月上旬选取长势较旺的迟熟棉田六块,采取顺行逐株调查的方法,每行查50 Cotton leafhopper (Empoasca biguttula Shiraki) is a major cotton pest late pest, the annual occurrence of large differences between the large annual occurrence of autumn cotton bolls affect the yield, reduce the cotton yield, reduce the quality. At present, the spatial distribution pattern of cotton leafhopper has not yet been reported. In order to accurately grasp the population of the field and better guide the prevention and treatment, the author investigated the spatial distribution of cotton leafhopper in Dadukou cotton area of ​​Dongzhi County in 1987. First, the investigation and research methods (a) in early September to select the more prosperous cotton late stage six, to take the method of per-line investigation, each line check 50