| 水田自然免耕土壤有机质变化特性研究 |
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| 引用本文： | 谢德体,魏朝富.水田自然免耕土壤有机质变化特性研究[J].西南农业大学学报,1991,13(4):434-437. |
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| 作者姓名： | 谢德体 魏朝富 |
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| 作者单位： | 西南农业大学土化系
(谢德体，魏朝富)，西南农业大学土化系(曾觉廷) |
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| 摘 要： | 水田自然免耕后,土壤有机质含量比淹水平作土壤低,比水旱轮作土壤高,随着免耕时间延长,免耕土壤的有机质和活性有机质逐渐回升.免耕垄作土壤的腐殖质特别是松结合态腐殖质相对含量增多,土壤复合度增加,有利于土壤结构的改善。
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| 关 键 词： | 水田 自然免耕 有机质 腐殖质 土壤 |
A STUDY ON SOIL ORGANIC MATTER VARIABLE FEATURES IN PADDY FIELDS UNDER SOIL VIRGINIZATION |
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| Xie Deti Wei Chaofu Zeng Jueting.A STUDY ON SOIL ORGANIC MATTER VARIABLE FEATURES IN PADDY FIELDS UNDER SOIL VIRGINIZATION[J].Journal of Southwest Agricultural University,1991,13(4):434-437. |
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| Authors: | Xie Deti Wei Chaofu Zeng Jueting |
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| Abstract: | Soil organic matter,available organic matter and humus contents are researched in thispaper.As compared with the tardi traditional tillage methods,soil organic matter contentin paddy fields after soil virginization is lower than that in inundated fields,but is higherthan that in drained fields.Organic matter and available organic matter contents of thevirginized soil increase gradually with the prolongation of soil virginization.Soil humuscontent,especially the loosely combined form of humus content and the degree oforgano-mineral gel complexation are increased in paddy fields under soil virginization,which are favorable to soil improvement. |
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| Keywords: | paddy field soil virginization organic matter humus |
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