| 绿肥和秸秆还田对稻田土壤供氮能力及产量的影响 |
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| 引用本文： | 卢萍,杨林章,单玉华,韩勇.绿肥和秸秆还田对稻田土壤供氮能力及产量的影响[J].土壤通报,2007,38(1):39-42. |
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| 作者姓名： | 卢萍 杨林章 单玉华 韩勇 |
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| 作者单位： | 1. 中国科学院,南京土壤研究所,江苏,南京,210008
2. 扬州大学,环境科学与工程学院,江苏,扬州,225009 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 研究了绿肥、秸秆还田及施用无机氮肥对水稻田土壤供氮能力及水稻产量的影响。结果表明在缺乏外源无机氮时,C/N高的有机物更能激发土壤氮的矿化,土壤速效氮含量增加。而在无机氮充足的情况下,C/N低的绿肥腐熟分解,使土壤矿质氮增加。绿肥还田使得施肥对土壤速效氮的影响加大。改变轮作制度,有机无机氮肥结合还田,水稻产量增加,无机氮肥需求量降低。
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| 关 键 词： | 速效氮 碳氮比 产量 |
| 文章编号： | 0564-3945(2007)01-0039-04 |
| 修稿时间： | 2005年12月27 |
Influence of Returning Green Manure and Wheat Straw to Paddy Soils on Soil Available N Content and Rice Yield |
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| LU Ping,YANG Lin-zhang,SHAN Yu-hua,HAN Yong.Influence of Returning Green Manure and Wheat Straw to Paddy Soils on Soil Available N Content and Rice Yield[J].Chinese Journal of Soil Science,2007,38(1):39-42. |
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| Authors: | LU Ping YANG Lin-zhang SHAN Yu-hua HAN Yong |
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| Abstract: | We studied the influence of organic materials and nitrogen fertilization management on soil available N content and rice yield.The results showed that soil available N content increased with high C/N materials addition when there was no inorganic nitrogen application.Decomposed green manure enhanced the soil nitrogen supplying capacity at the inorganic nitrogen rate of 270kg ha-1.Returning green manure and wheat straw to soil enlarged the influence of inorganic nitrogen.The rice yield increased when the application of organic and inorganic nitrogen was incorporated. |
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| Keywords: | Soil available N C/N Rice yield |
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