| The research on soil nutrition and biology activity in the sunlight greenhouse of different cultivation years |
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| DOI：10.7606/j.issn.1000-7601.2006.03.11 |
| Key Words: sunlight greenhouse soil nutrients nitrate content soil microorganism alkaline phosphates urease catalase |
| Author Name | Affiliation | | ZHAO Xiao-ning | Resource and Environmental College Northwest Sc-i Tech University of Agriculture and Forest, Yangling, Shannxi 712100,China | | LU Jia-long | Resource and Environmental College Northwest Sc-i Tech University of Agriculture and Forest, Yangling, Shannxi 712100,China | | BAI Yang-fang | Resource and Environmental College Northwest Sc-i Tech University of Agriculture and Forest, Yangling, Shannxi 712100,China | | XUE Quan-hong | Resource and Environmental College Northwest Sc-i Tech University of Agriculture and Forest, Yangling, Shannxi 712100,China |
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| Abstract: |
| The nutrient accumulation in soil profiles in sunlight greenhouse and the nitrate content and the microorganism number were determined.In sunlight greenhouse from one to six years and two to seven years,it was found the nutrient accumulation in soil profiles in sunlight greenhouse was almost larger than that of opened fields.With increase of cultivation years,the nitrate content increased significantly.From the nitrate content in soil profiles,we could see that the nitrate eluviation was visible.The relationship of the soil microorganism contents in sunlight greenhouse was as following: bacteria > actinomycetes > fungi.With increase of cultivation years,the soil bacteria and fungi increased.The content of atinomycetes decreased in seven years old greenhouse.The contents of alkaline phosphates,urease and catalase were larger than that of the open fields.The content of alkaline phosphates increased with the increase of cultivation years.The content of urease peaked in 3 years old sunlight greenhouse.The content of catalase was fluctuant.Through the analysis of the different analyzable factor of soil in sunlight greenhouse,we tried to find the reasonable methods of the fertilization and watering. |
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