蜘蛛是农业害虫的重要捕食性天敌。为了解田间蜘蛛的优势种类及其发生与消长规律和施用药剂的影响,我们于1974—75年在江苏省东台等地开门办学中作了系统调查,所得结果汇报如下。 一、田间蜘蛛种类 我们于4—9月间在东台县安丰公社的水稻、棉花、玉米、绿肥等田间共采到蜘蛛30多种,初步鉴定出19 Spiders are important predators of agricultural pests. In order to understand the dominant species of spiders in the field and their occurrence, growth and decline and the influence of the application of pesticides, we conducted a systematic investigation in opening schools in Dongtai, Jiangsu Province in 1974-75. The results obtained are reported below. I. Spider Species in the Field We collected more than 30 kinds of spiders from paddy, cotton, corn and green manure in Anfeng commune of Dongtai County from April to September, and initially identified 19