| 旱地小麦地表覆盖对土壤水分硝态氮累积分布的影响 |
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| 引用本文： | 李华,王朝辉,李生秀. 旱地小麦地表覆盖对土壤水分硝态氮累积分布的影响[J]. 农业环境科学学报, 2011, 30(7): 1371-1377 |
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| 作者姓名： | 李华 王朝辉 李生秀 |
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| 作者单位： | 西北农林科技大学资源环境学院,陕西杨凌,712100 |
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| 基金项目： | 国家自然科学基金(30871596,30971866); 农业公益性行业科研专项经费项目(201103003); 现代农业产业技术体系建设专项资金 |
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| 摘 要： | 在黄土高原南部半湿润易干旱地区,通过长期田间定位试验,研究了不同地表覆盖对第3季冬小麦生长、氮素吸收及土壤水分和硝态氮累积分布的影响.结果表明,无论地表覆盖能否促进小麦生长及其对氮素的吸收,在收获期均能提高表层土壤水分；覆膜栽培增加表层硝态氮含量,覆草也在高量施用氮肥时,提高表层硝态氮的累积.而地表覆盖对耕层以下土壤水...
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| 关 键 词： | 覆膜 覆草 施氮 硝态氮 水分 冬小麦 |
Effect of Different Soil Surface Treatment on Moisture and Nitrate Nitrogen Accumulation and Distribution in Wheat Field Soil Profiles in Dryland |
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| LI Hua,WANG Zhao-hui,LI Sheng-xiu. Effect of Different Soil Surface Treatment on Moisture and Nitrate Nitrogen Accumulation and Distribution in Wheat Field Soil Profiles in Dryland[J]. Journal of Agro-Environment Science( J. Agro-Environ. Sci.), 2011, 30(7): 1371-1377 |
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| Authors: | LI Hua WANG Zhao-hui LI Sheng-xiu |
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| Affiliation: | LI Hua,WANG Zhao-hui*,LI Sheng-xiu (College of Resources and Environmental Sciences,Northwest A&F University,Yangling 712100,China) |
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| Abstract: | A long-term field experiment was conducted in a sub-humid area prone to droughts at south part of the Loess Plateau, to study the effects of different soil surface treatment on winter wheat growth and nitrogen uptake, water and nitrate nitrogen accumulation and distribution in soil profiles. The results showed that, soil water and NO-3-N in 0~20 cm obviously increased under plastic sheet mulching with the three N rates, while under wheat straw mulching, soil moisture increased too, and NO-3-N also significa... |
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| Keywords: | plastic sheet mulching wheat straw mulching N fertilization nitrate nitrogen soil moisture winter wheat |
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