| Effects of long-term conservation tillage on soil enzyme activity of sloping dryland and its relation to soil fertility |
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| DOI：10.7606/j.issn.1000-7601.2011.02.24 |
| Key Words: soil enzyme activity nutrients soil fertility correlation analysis conservation tillage sloping field |
| Author Name | Affiliation | | ZHANG Jie | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China
Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China | | YAO Yuqing | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China
Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China | | LU Junjie | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China
Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China | | CAI Dianxiong | Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China
Institute of Agricultural Resources and Regional Planning，CAAS， Beijing 100081， China | | JIN Ke | Institute of Agricultural Resources and Regional Planning，CAAS， Beijing 100081， China | | LI Junhong | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China
Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China | | DING Zhiqiang | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China
Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China | | SUN Jingke | Pingdingshan Collage of Technology，Pingdingshan, He’nan 467000，China | | TAN Zunshe | Luoyang Bureau of Agricultural, Luoyang， He’nan 471000, China | | WU Jianfeng | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China
Luoyang Dryland Farmning Experiment Station, CAAS, Luoyang， He’nan 471022，China | | ZHANG Shaolan | Luoyang Academy of Agricultural Sciences, Luoyang， He’nan 471022，China |
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| Abstract: |
| In order to explore soil enzyme activity and its relation to soil fertility under the circumstances of long-term conservation tillage， determination and analysis were conducted of the soil enzyme activity and soil fertility after 7 year conservation tillage in sloping dryland of west Henan Province. The results showed that the activity of soil urease， catalase and invertase increased obviously under sub-soiling tillage and no-tillage, especially the enzyme activity in 0~10 cm soil layer， and the soil urease activity increased most. The correlation analysis of soil enzyme activity showed that there was a positive correlation between urease and the content of organic matter, total P，available P，available K and available N，between invertase and the content of total P and total K, and between catalase and the content of total P. It indicated that soil urease activity can be used as an index of soil fertility，while catalase may play an auxiliary function. |
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