| 长期施用无机肥对稻田红壤生化特性的影响 |
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| 作者姓名： | ZHONG Wen-Hui CAI Zu-Cong ZHANG He |
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| 作者单位： | [1]State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 （China）. [2]College of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097 （China） |
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| 基金项目： | 国家自然科学基金;中国科学院土壤与农业可持续发展国家重点实验室资助项目开放基金 |
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| 摘 要： | A long-term experiment was set up in Yingtan of Jiangxi Province to investigate the effects of long-term application of inorganic fertilizers on the biochemical properties of a rice-planting soil derived from Quaternary red earth. Noncultivated soils are extremely eroded and characterized by a low pH and deficiencies in available nutrients, in particular P and N. After 13 years of inorganic fertilization in cultivation for double-cropped rice, the biochemical properties of the soil were changed. The nitrification potential and urease activity were higher in the treatments with N application than those without N application. Acid phosphatase activity and dehydrogenase activity were also higher in the treatments with P application than in those without P application. The dehydrogenase activity correlated well with the concentrations of both total P and hydrolysable N and with rice crop yield, suggesting that dehydrogenase activity might be a suitable indicator for improvement in soil fertility.
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| 关 键 词： | 无机肥 化肥 红壤 麦角固醇 |
| 收稿时间： | 8 December 2006 |
| 修稿时间： | 2006-12-082007-03-26 |
Effects of long-term application of inorganic fertilizers on biochemical properties of a rice-planting red soil |
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| ZHONG Wen-Hui,CAI Zu-Cong,ZHANG He.Effects of long-term application of inorganic fertilizers on biochemical properties of a rice-planting red soil[J].Pedosphere,2007,17(4):419-428. |
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| Authors: | ZHONG Wen-Hui CAI Zu-Cong and ZHANG He |
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| Institution: | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: w.h.zhong@yeah.net;College of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097 (China);State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China). E-mail: w.h.zhong@yeah.net;College of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097 (China) |
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| Abstract: | A long-term experiment was set up in Yingtan of Jiangxi Province to investigate the effects of long-term application of inorganic fertilizers on the biochemical properties of a rice-planting soil derived from Quaternary red earth. Noncultivated soils are extremely eroded and characterized by a low pH and deficiencies in available nutrients, in particular P and N. After 13 years of inorganic fertilization in cultivation for double-cropped rice, the biochemical properties of the soil were changed. The nitrification potential and urease activity were higher in the treatments with N application than those without N application, Acid phosphatase activity and dehydrogenase activity were also higher in the treatments with P application than in those without P application. The dehydrogenase activity correlated well with the concentrations of both total P and hydrolysable N and with rice crop yield, suggesting that dehydrogenase activity might be a suitable indicator for improvement in soil fertility. |
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| Keywords: | enzyme ergosterol inorganic fertilizer nitrification potential rice-planting red soil |
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