| 农田秸秆覆盖对冬小麦水氮效应的影响 |
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| 引用本文： | 高亚军,李生秀,李世清,田霄鸿,王朝辉,郑险峰,杜建军. 农田秸秆覆盖对冬小麦水氮效应的影响[J]. 应用生态学报, 2005, 16(8): 1450-1454 |
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| 作者姓名： | 高亚军 李生秀 李世清 田霄鸿 王朝辉 郑险峰 杜建军 |
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| 作者单位： | 1. 西北农林科技大学资源环境学院, 杨凌 712100;2. 仲恺农业技术学院农学系, 广州 510225 |
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| 基金项目： | 国家自然科学基金项目(40471069)，重点项目(30230230)，重大项目(49890330)，西北农林科技大学2003年重点科研资助项目 |
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| 摘 要： | 通过田间试验研究了杨凌红油土农田秸秆覆盖条件下冬小麦的水氮效应.结果表明,秸秆覆盖使土壤水分状况明显改善,从而使补充灌水的效果相应减小,氮肥的作用更加突出;无覆盖条件下,水氮交互效应均为负值,而秸秆覆盖时水氮有正的交互作用.旱地秸秆覆盖条件下更应重视养分的投入.无秸秆覆盖条件下小麦取得高产的基础是良好的土壤底墒和充足的氮肥.秸秆覆盖使小麦达到最高产量所需要的灌水量降低,灌水时期后延.不论有无秸秆覆盖,拔节期灌水对冬小麦籽粒产量没有显著影响.
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| 关 键 词： | 旱地 秸秆覆盖 冬小麦 水氮效应 |
| 文章编号： | 1001-9332(2005)08-1450-05 |
| 收稿时间： | 2004-10-02 |
| 修稿时间： | 2004-10-02 |
Effects of irrigation and nitrogen fertilization on winter wheat yield under straw mulch |
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| Gao Yajun,LI SHENGXIU,Li Shiqing,TIAN Xiaohong,WANG Zhaohui,ZHENG Xianfeng,Du Jianjun. Effects of irrigation and nitrogen fertilization on winter wheat yield under straw mulch[J]. The journal of applied ecology, 2005, 16(8): 1450-1454 |
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| Authors: | Gao Yajun LI SHENGXIU Li Shiqing TIAN Xiaohong WANG Zhaohui ZHENG Xianfeng Du Jianjun |
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| Affiliation: | 1. College of Resources and Environmental Science, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China;2. Department of Agronomy, Zhongkai University of Agriculture and Technology, Guangzhou 510225, China |
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| Abstract: | A field experiment was conducted on a Hongyou soil of Yangling to investigate the effects of irrigation and nitrogen fertilization on wheat yield under straw mulch.The results showed that under straw mulch,N fertilization contributed more to the increase of wheat yield than irrigation,because soil moisture condition was improved greatly.The interaction between irrigation and nitrogen fertilization was negative in no-mulch treatment,but positive under straw mulch.For dryland,more attention should be paid to the input of nutrients when straw mulch was applied.High moisture content in soil profile before sowing and sufficient N input were essential for good harvest when field was not mulched.Under straw mulch,the irrigation rate for a maximum yield was reduced,and the optimum time of irrigation was postponed.Wheat grain yield had no relation to the irrigation during jointing stage in both no-mulch and straw mulch treatments. |
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| Keywords: | Dryland Straw mulch Winter wheat Effects of irrigation and N fertilization |
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