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氯酸钾对龙眼果园土壤动物群落多样性的影响

Keywords: 氯酸钾,土壤动物,类群分布,群落多样性,反季节龙眼果园

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Abstract:

对土壤施用氯酸钾进行产期调控的反季节龙眼果园的土壤动物群落多样性与空间分布进行了初步调查。结果表明,共捕获的6182只土壤动物,分别隶属于4门8纲25目,优势种群为蚯蚓类和半翅类;在反季节龙眼果园内的土壤动物主要分布在0~10cm的深度范围内,而且随深度增加,数量和种类均呈下降趋势;对捕获的土壤动物进行群落多样性分析发现,施加各浓度氯酸钾的处理除Pielou均匀性指数外,数量、种类、Shannon-Wiener多样性指数、Simpson优势度指数和密度类群指数均无显著差异,表明在高温多雨的华南地区,龙眼施用氯酸钾催花剂量少于1000g·株~(-1)的条件下,对果园土壤动物的影响不大。

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