| 有机氮部分替代无机氮对水稻产量和氮素利用率的影响 |
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| 引用本文： | 欧杨虹,徐阳春,沈其荣.有机氮部分替代无机氮对水稻产量和氮素利用率的影响[J].江苏农业学报,2009,25(1). |
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| 作者姓名： | 欧杨虹 徐阳春 沈其荣 |
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| 作者单位： | 南京农业大学资环学院,江苏,南京,210095 |
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| 基金项目： | 国家科技支撑计划，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 研究等氮条件下,不同比例有机肥氮替代化肥氮对稻田土壤氮素动态、水稻氮素吸收累积、水稻产量和氮肥利用率的影响.结果表明:与对照相比,各施肥处理均能显著改善土壤矿质氮的供应和水稻生长状况.有机肥氮100%替代化肥氮的处理水稻籽粒产量较不施肥对照增加,但显著低于全化肥氮处理和有机肥氮部分替代化肥氮处理.25%有机肥氮与75%化肥氮配合处理水稻籽粒产量最高,氮肥利用率高于其他施肥处理,为48.6%.说明有机肥氮可以在一定范围内部分替代化肥氮.
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| 关 键 词： | 水稻 有机氮 无机氮 产量 氮素利用率 |
Effect of Combined Use of Organic and Inorganic Nitrogen Fertilizer on Rice Yield and Nitrogen Use Efficiency |
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| OU Yang-hong,XU Yang-chun,SHEN Qi-rong.Effect of Combined Use of Organic and Inorganic Nitrogen Fertilizer on Rice Yield and Nitrogen Use Efficiency[J].Jiangsu Journal of Agricultural Sciences,2009,25(1). |
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| Authors: | OU Yang-hong XU Yang-chun SHEN Qi-rong |
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| Institution: | College of Resource and Environmental Science;Nanjing Agricultural University;Nanjing 210095;China |
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| Abstract: | A field experiment was conducted in the southern part of Jiangsu Provinces,China,to investigate the changes of soil nitrogen,nitrogen absorption and accumulation in rice,grain yield and nitrogen use efficiency of rice.No fertilization was set as control(CK) and 100% organic nitrogen,half organic and half inorganic nitrogen,25% organic with 75% inorganic nitrogen,and 100% inorganic nitrogen were the treatments.Compared with CK,nitrogen fertilizer treatments notably improved the supply of soil mineral nitroge... |
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| Keywords: | rice manure-N inorganic fertilizer-N yield nitrogen use efficiency |
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