| 耕作方式对西南地区紫色水稻土全氮及碱解氮的影响 |
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| 引用本文： | 祝滔,郝庆菊,江长胜,袁雪. 耕作方式对西南地区紫色水稻土全氮及碱解氮的影响[J]. 地理科学, 2011, 31(6): 753-757. DOI: 10.13249/j.cnki.sgs.2011.06.753 |
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| 作者姓名： | 祝滔 郝庆菊 江长胜 袁雪 |
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| 作者单位： | 1. 西南大学三峡库区生态环境教育部重点实验室 西南大学资源环境学院, 重庆 400715;2. 重庆市农业资源与环境研究重点实验室, 重庆 400716 |
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| 基金项目： | 国家自然科学基金项目(41005069和40805050); 中央高校基本科研业务费专项资金(XDJK2009B026); 西南大学生态学重点学科“211工程”三期建设项目、西南大学大型仪器开放基金(201028)资助 |
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| 摘 要： | 以位于西南大学试验农场的紫色土长期免耕试验田为研究对象,探讨了不同耕作方式-冬水田平作(DP)、水旱轮作(SH)、垄作免耕(LM)、厢作免耕(XM)和垄作翻耕(LF)对紫色水稻土全氮及碱解氮的影响。结果表明,在0~60 cm的土壤深度内,不同耕作方式下土壤全氮的含量为LM (1.53 g/kg)>DP (1.50 g/kg)>XM (1.32 g/kg)>LF (1.31 g/kg)>SH (1.16 g/kg),碱解氮为DP (111.48 mg/kg)>LM (105.20 mg/kg)>SH (101.97 mg/kg)>LF (97.26 mg/kg)>XM (95.19 mg/kg),长期垄作免耕有利于土壤中全氮的提高。不同耕作处理下土壤C/N在7.96~16.56之间,免耕农作更有利于有机质矿化过程中养分的释放。
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| 关 键 词： | 耕作 土壤全氮 碱解氮 碳氮比 紫色水稻土 |
| 收稿时间： | 2010-11-20 |
| 修稿时间： | 2011-02-11 |
Tillage Impacts on Soil Total Nitrogen and Alkali-hydrolyzed Nitrogen of the Purple Paddy Soil in Southeast China |
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| ZHU Tao,HAO Qing-ju,JIANG Chang-sheng,YUAN Xue. Tillage Impacts on Soil Total Nitrogen and Alkali-hydrolyzed Nitrogen of the Purple Paddy Soil in Southeast China[J]. Scientia Geographica Sinica, 2011, 31(6): 753-757. DOI: 10.13249/j.cnki.sgs.2011.06.753 |
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| Authors: | ZHU Tao HAO Qing-ju JIANG Chang-sheng YUAN Xue |
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| Affiliation: | 1. Key Laboratory of Eco-environments in Three Gorges Reservoir Region of Ministry of Education, College of Resources and Environment, Southwest University, Chongqing 400715, China;2. Chongqing Key Laboratory of Agricultural Resources and Environment, Chongqing 400716, China |
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| Abstract: | Soil total nitrogen and alkali-hydrolyzed nitrogen based on a long-term experiment with various tillage systems were studied in a purple paddy soil at the farm of Southwest University,Chongqing,China.The experiment included five tillage treatments: conventional tillage with rice only system(DP),conventional tillage with rotation of rice and rape system(SH),no-till and ridge culture with rotation of rice and rape system(LM),no-till and plain culture with rotation of rice and rape system(XM),and tillage and r... |
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| Keywords: | Tillage soil total nitrogen alkali-hydrolyzed nitrogen C/N purple paddy soil |
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