通过棉田定点调查,初步鉴定陕西大荔棉田计有蜘蛛8科17种,其中主要成分依次为狼蛛、皿蛛、球蛛、蟹蛛,园蛛和肖蛸等;蜘蛛群落结构在棉花苗期和蕾铃期有明显不同;Shannon-wiener多样性指数,simpson优势度和均匀度等分析,棉花苗期物种多样性明显小于蕾铃期,优势种为丁纹豹蛛和草间小黑蛛;分析了丁纹豹蛛种群消长动态。 According to the fixed-point survey in cotton field, the preliminary identification of 17 species of 8 families of spiders in Dali, Shaanxi Province was made, of which the main components were Tarantula, Labradoridae, Crab spider, Crab spider, There was a significant difference between the boll stage and the boll stage. Shannon-wiener diversity index, simpson dominance and evenness analysis showed that the species diversity of cotton seedling was significantly less than that of the budding stage, The dynamics of population dynamics of Leopard spider spider populations was analyzed.