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| Effects of straw-mulching and no-tillage on soil nutrients and carbon pool in Sichuan Basin |
| Chen Shanghong1,2,Liu Dinghui1,Zhu Zhonglin1,Shu Li1,2,Wang Changquan2 |
1.Key Laboratory of MOA-Agricultural Resources and Environment in the Upper Reaches of Yangtze River,Sichuan Academy of Agricultural
Sciences,610066,Chengdu;2.College of Resources and Environmental,Sichuan Agricultural University,625014,Ya'an,Sichuan: China |
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Abstract The content of NPK,different available carbons and CPMI are discussed through a fixed field experiment of three years on two kinds of different parent materials soil in Sichuan Basin.The results indicated that straw-mulching treatment increased the content of soil organic matter,total NPK,available NPK,different available carbons and CPMI.Treatment of straw-mulching-spiral-tillage can improve the quality of available carbon cool comparing with straw-mulching-no-tillage,and CA、CMB、CM and CPMI increased 5.81%-31.76%,33.87%-39.33%,15.42%-21.56% and 4.03%-21.13% respectively.The results of correlation analysis demonstrated that CPMI can reflect the dramatic variation of soil fertility and soil carbon more actively than that of soil organic matter.
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Received: 11 December 2007
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