| 氮磷肥配施对夏玉米土壤含水量及水分利用效率的影响 |
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| 引用本文： | 杜红霞,吴普特,冯浩,王百群,马军勇.氮磷肥配施对夏玉米土壤含水量及水分利用效率的影响[J].灌溉排水学报,2009,28(3). |
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| 作者姓名： | 杜红霞 吴普特 冯浩 王百群 马军勇 |
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| 作者单位： | 杜红霞,马军勇,DU Hong-xia,MA Jun-yong(西北农林科技大学资源环境学院,陕西杨凌712100;国家节水灌溉杨凌工程技术中心,陕西杨凌712100);吴普特,冯浩,WU Pu-te,FENG Hao(中国科学院水利部水土保持研究所,陕西杨凌712100;国家节水灌溉杨凌工程技术中心,陕西杨凌712100);王百群,WANG Bai-qun(中国科学院水利部水土保持研究所,陕西杨凌,712100)
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| 基金项目： | 国家高技术研究发展计划(863计划)重点项目，教育部新世纪优秀人才支持计划，高等学校学科创新引智计划 |
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| 摘 要： | 随土壤剖面深度的增加,土壤含水量逐渐降低,上层土壤含水量变幅大于下层。在同一氮肥水平下,夏玉米各生长期内0~50 cm土层含水量呈施磷处理高于不施磷处理,50~110 cm土层则反之。苗期—拔节—灌浆—收获期0~110 cm土壤蓄水量呈升高—降低—升高趋势;苗期呈氮磷配施处理高于单施氮肥处理,其它生长期氮肥与磷肥水平为120 kg/hm2配施处理最高;表层50 cm土层蓄水量均呈现氮磷配施处理高于单施氮肥处理,50~110 cm土层则反之。氮磷配施能显著提高产量及水分利用效率,二者均以配施磷肥120 kg/hm2处理最高;当施磷量超过120 kg/hm2后,产量和水分利用效率反而有下降趋势。
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| 关 键 词： | 氮磷配施 土壤水分 土壤蓄水量 土壤耗水量 水分利用效率 |
The Influence of Nitrogen Mixed with Phosphorus on Soil Water Content and Water Use Efficiency of Summer Maize |
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| DU Hong-xia,WU Pu-te,FENG Hao,WANG Bai-qun,MA Jun-yong.The Influence of Nitrogen Mixed with Phosphorus on Soil Water Content and Water Use Efficiency of Summer Maize[J].Journal of Irrigation and Drainage,2009,28(3). |
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| Authors: | DU Hong-xia WU Pu-te FENG Hao WANG Bai-qun MA Jun-yong |
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| Institution: | 1.College of Resource & Environment;Northwester A & F University;Yangling 712100;China;2.Institute of Soil and Water Conservation;Chinese Academy of Science and Ministry of Water Resources;3.National Engineering Research Center for Water Saving Irrigation at Yangling;China |
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| Abstract: | Soil water content(SWC) decreased gradually with increasing of soil depth,and SWC in the topsoil had a larger variation range than that did in the subsoil.Under the applying same N fertilizer level,SWC of P fertilizer application(PFA) was more than that without PFA in 50 cm topsoil during different growth periods,on the contrary,it below 50 cm topsoil.Under seedling,stem elongation,grouting,and harvest stages,there was an up-down-up fluctuation trend on soil water storage capacity(SWSC) in 0~110 cm soil.SWS... |
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| Keywords: | nitrogen mixed with phosphorus fertilizer soil moisture soil water storage capacity water use efficiency |
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