| 应用~(15)N示踪研究设施蔬菜对氮肥的当季利用 |
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| 引用本文： | 杜会英,冀宏杰,徐爱国,张认连,程波,张维理. 应用~(15)N示踪研究设施蔬菜对氮肥的当季利用[J]. 土壤通报, 2011, 0(6): 1446-1450 |
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| 作者姓名： | 杜会英 冀宏杰 徐爱国 张认连 程波 张维理 |
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| 作者单位： | 农业部环境保护科研监测所农业部/天津市产地环境与农产品安全重点开放实验室;中国农业科学院农业资源与农业区划研究所; |
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| 基金项目： | 国家科技部973项目(2002CB410806); 云南省院省校科技合作计划(2006YX35); 中央级公益性科研院所基本科研业务费(农业部环境保护科研监测所)专项资金(2007-aepi-6)资助 |
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| 摘 要： | 在设施栽培条件下,采用田间多点位微区试验,研究莴苣、芹菜和生菜3种蔬菜氮肥的当季利用与损失。结果表明:3种蔬菜氮肥施用量在习惯施氮量的基础上减少25%,氮肥当季利用率增加,植株总吸氮量中来自于氮肥的比例降低。经过莴苣、芹菜和生菜一季的吸收,0～20 cm土层氮肥残留显著高于20 cm以下各土层当季氮肥残留。在莴苣种植系统中氮肥有23.90%～31.15%损失,在芹菜种植系统中氮肥有18.69%～27.71%损失,生菜种植系统中氮肥损失低于15%。
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| 关 键 词： | 蔬菜 氮利用率 氮素去向15N |
Study on the Utilization of Nitrogen Fertilizer under Greenhouse Vegetable by ~(15)N Tracer |
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| DU Hui-ying ,JI Hong-jie ,XU Ai-guo ,ZHANG Ren-lian ,CHENG Bo ,ZHANG Wei-li. Study on the Utilization of Nitrogen Fertilizer under Greenhouse Vegetable by ~(15)N Tracer[J]. Chinese Journal of Soil Science, 2011, 0(6): 1446-1450 |
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| Authors: | DU Hui-ying JI Hong-jie XU Ai-guo ZHANG Ren-lian CHENG Bo ZHANG Wei-li |
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| Affiliation: | DU Hui-ying 1,JI Hong-jie 2,XU Ai-guo 2,ZHANG Ren-lian 2,CHENG Bo 1,ZHANG Wei-li 2(1.Agro-Environmental Protection Institute of Ministry of Agriculture,Key Laboratory of Production Environment Agro-product Safety of Ministry of Agriculture and Tianjin Key Laboratory of Agro-environment and Food Safety,Tianjin 300191,China,2.Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China) |
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| Abstract: | The utilization and loss of chemical nitrogen fertilizer in soil-vegetable system were studied by field 15N micro-plot.The results showed that nitrogen use efficiency of asparagus lettuce,celery and leaf lettuce increased with 25% reduction in N fertilizer.The proportion of N derived from fertilizer reduced with 25% reduction in N fertilizer.After the current vegetable harvest,nitrogen residue of 0-20 cm soil was significantly higher than that of below 20 cm.23.9%-31.15% of nitrogen was lost from soil-aspar... |
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| Keywords: | Vegetable Nitrogen utilization Fate of nitrogen 15N |
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