【摘要】 依据Berger-Parker (1974 )优势度指数 (d) ,分析得出了不同时期棉田蜘蛛的优势种类 ,并对其季节变动趋势进行了研究。结果表明 ,棉田蜘蛛的优势种为星豹蛛、草间小黑蛛、温室球腹蛛、三突花蛛、芦苇卷叶蛛。农药的施用对这些优势种蜘蛛的种群动态有一定的影响更多还原

【Abstract】 The spider species in different period in cotton field was obtained using Berger Parker dominance index(d).The result showed that the dominant species of spider communities in cotton field were Pardosa astrigera,Erigondium gramincola,Achaearanea tepidariorum,Misumenops tricuspidatus,and Dictyna arundinaces.and their dynamics was influenced by chemicals to some degrees.更多还原