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高位池养虾对土壤微生物脂肪酸和土壤酶活及其表征的土壤质量的影响

DOI: 10.3724/SP.J.1145.2011.00069, PP. 69-72

Keywords: 高位池,脂肪酸分析,土壤酶活,土壤微生物,土壤质量,海南岛

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Abstract:

为评价高位池养虾对土壤质量的影响,通过脂肪酸分析和土壤酶活测定比较海南岛白马井镇高位池土壤与原始土壤微生物群落结构与活性的变化.结果显示,高位池土壤的ph值和盐分含量显著升高,有机质和总n显著下降(p<0.05).脂肪酸分析表明,高位池土壤中细菌、真菌、放线菌和微生物总量都显著下降(p<0.05),尤其真菌急剧下降(p<0.05),放线菌未检测到.土壤脱氢酶、脲酶和酸性磷酸酶活性在高位池土壤中也显著下降(p<0.05).总之,微生物群落结构显著变化,微生物生物量和活性在高位池土壤中都显著下降,表明长期的高位池养虾导致了土壤质量的下降.图2表4参29

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