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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (15): 62-66.doi: 10.11924/j.issn.1000-6850.2011-3022

所属专题： 生物技术

• 农学 农业基础科学 • 上一篇    下一篇

环境激素皂甙元对土壤酶活性和微生物数量的影响

刘杰 刘小燕 文双喜 伍新花 江幸 曾清如   

  • 收稿日期:2011-10-18 修回日期:2011-12-26 出版日期:2012-05-25 发布日期:2012-05-25

Effects of Environmental Hormone Diosgenin on Enzyme Activities in Soil and Microbial Populations

  • Received:2011-10-18 Revised:2011-12-26 Online:2012-05-25 Published:2012-05-25

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摘要：

为了研究皂甙元在土壤中的环境行为，采用模拟方法，探讨皂甙元对土壤酶活性和微生物数量的影响。结果表明，皂甙元对土壤过氧化氢酶有不同程度的刺激作用。对蔗糖酶的影响是抑制作用，且对蔗糖酶抑制作用、恢复作用均表现的较为迟缓。低浓度(40 mg/kg)的皂甙元处理后对细菌、真菌、放线菌有不同的刺激作用，但是高浓度(80 mg/kg)的有抑制作用；对于硝化菌，不论是低浓度还是高浓度对其都有抑制作用，且抑制作用与浓度处理呈显著的正相关。

关键词: 层次分析法, 层次分析法, 联户沼气工程, 环境影响评价, 净现值, 规模经济效益

Abstract:

In order to study diosgenin to the soil mierobe and enzyme activity, the effect of diosgenin on enzyme activities in soil and microbial populations was investigated in a microcosm mimicking soil ecosystem. The results showed that, the diosgenin to the catalase activity had the varying stimulation degree, to the sucrase activity were inhibited action, and the inhibitory action, recovered function was slowly, at low concentrations (40 mg/kg) diosgenin processing to the bacteria, fungi and actinomycetes had the different stimulation. But high concentration (80 mg/kg) had the inhibited action. Regarding to the nitrifying bacteria, no matter was the low concentrations or the high concentrations all had the inhibited action, and had a high positive correlation between the inhibition and the diosgenin concentrations.