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施用沼肥对番茄田节肢动物群落结构及番茄产量的影响

, PP. 403-407

Keywords: 番茄,沼肥,节肢动物群落,产量

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Abstract:

在等氮、等磷、等钾的条件下,对番茄田分别施用化肥、沼肥加化肥、沼肥加饼肥,研究不同施肥类型对番茄田节肢动物群落结构及番茄产量的影响。结果显示,施用化肥害虫种类为2.17±0.29种/m2,害虫个体数量为48.92±2.25头/m2,目标害虫桃蚜Myzuspersicae(Sulzer)个体数量为40.83±1.08头/m2,均显著高于施用沼肥加化肥和沼肥加饼肥。施用沼肥加饼肥节肢动物群落多样性指数为2.4115±0.0324,均匀度指数为0.9472±0.0205,均显著高于施用化肥和沼肥加化肥,且施用沼肥加化肥显著高于施用化肥;优势度指数为0.3987±0.0224,显著低于施用化肥。施用沼肥加饼肥节肢动物群落稳定性Ss/Si指数为0.0686±0.0007,显著高于施用化肥;Sn/Sp指数为1.4153±0.0281,显著高于施用化肥和沼肥加化肥。施用沼肥加化肥、沼肥加饼肥的番茄产量与对照施用化肥相比无显著差异。表明番茄田施用沼肥减少了化肥施用量,促进了节肢动物群落的稳定性,对番茄产量无显著影响。

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