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作 者 ：姜永厚,吴进才,徐建祥,刘井兰,邱慧敏,杨国庆,王洪全

期 刊 ：生态学报 2002年 22卷 8期 页码：1286~1292

关键词：稻田蜘蛛；空间生态位；杀虫剂；

Keywords:spiders, spatial niche, insecticide, rice field,

摘 要 ：通过对稻田各蜘蛛和害虫空间生态位的研究发现 ,空间生态位宽度随季节而变化 ,狼蛛的生态位宽度值逐渐变大 ;肖蛸两头高中间低 ;微蛛在 7月下旬最大 ;球腹蛛在 8月下旬 9月上旬最大。各类群的数量是影响该类群空间生态位的重要因素。空间生态位具有明显的日节律 ,狼蛛在 7～ 8月份以中午最宽 ,微蛛变化不大 ;肖蛸在 7～ 8月份下午的生态位宽度值大于上午 ,9月份则上午大于下午 ;球腹蛛 7～ 8月份以上午为最大 ;跳蛛下午大于上午。不同种类农药在一天中不同时间施用对各类蜘蛛存活率及捕食功能的影响不同 ,杀虫双上午用药对蜘蛛集团的捕食功能减退率影响较小 ,甲胺磷则相反。

Abstract:The experiment was conducted in the experimental farm of Yangzhou Agricultural School. Rice was transplanted on 21, June 1999. A plot (0\^1333hm\+2) was selected for spatial niche observation, and another four plots, 0\^01667hm\+2 for each plot, were used for comparing the effect of spraying of two insecticides, bisultap and methamidophos, at common dosage at different time on niche breadths of spiders and planthopper and predation function of spiders. Rice plants were distinguished into three resource grad...

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