| 有机无机氮肥配施对土壤氮淋失及油麦菜生长的影响 |
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| 引用本文： | 宁建凤,邹献中,杨少海,魏岚,巫金龙.有机无机氮肥配施对土壤氮淋失及油麦菜生长的影响[J].农业工程学报,2007,23(11):95-100. |
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| 作者姓名： | 宁建凤 邹献中 杨少海 魏岚 巫金龙 |
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| 作者单位： | 广东农业科学院土壤肥料研究所,广州,510640 |
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| 基金项目： | 广东省科技厅农业科技攻关项目;广东省水利科技重点攻关计划 |
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| 摘 要： | 利用网室盆栽试验,研究了相同施氮量不同有机无机氮配施比例：0∶4、1∶3、1∶1、3∶1和4∶0对油麦菜产量及土壤氮淋失的影响。结果表明,0∶4配比（单施无机氮肥）处理土壤渗虑液pH值最低,而总氮、硝态氮和铵态氮淋失量最高,分别为926.6、648.3和194.7mg;配施有机肥能够显著提高渗滤液pH值和增加油麦菜产量,同时降低土壤氮淋失量,且随有机肥配施量增加,土壤氮淋失量下降明显,而1∶1有机无机氮配比处理油麦菜产量最高;硝态氮是土壤主要的氮淋失形态;油麦菜移栽第5 d和第18 d是土壤总氮、硝态氮淋失高峰期,且无机氮肥追施能够增加总氮、硝态氮的淋失量;土壤铵态氮淋失量随油麦菜生长总体上呈下降趋势。从兼顾油麦菜产量和减轻氮对环境污染两个角度考虑,有机无机氮1∶1的用量配比较佳。
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| 关 键 词： | 油麦菜 氮肥 有机无机肥配施 氮淋失 |
| 文章编号： | 1002-6819（2007）11-0095-06 |
| 收稿时间： | 2007-02-05 |
| 修稿时间： | 2007-08-01 |
Effects of combined application of organic and inorganic nitrogen fertilizer on the soil nitrogn leaching and the growth of leaf-used lettuce |
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| Ning Jianfeng,Zou Xianzhong,Yang Shaohai,Wei Lan and Wu Jinlong.Effects of combined application of organic and inorganic nitrogen fertilizer on the soil nitrogn leaching and the growth of leaf-used lettuce[J].Transactions of the Chinese Society of Agricultural Engineering,2007,23(11):95-100. |
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| Authors: | Ning Jianfeng Zou Xianzhong Yang Shaohai Wei Lan and Wu Jinlong |
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| Institution: | Soil and Fertilizer Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;Soil and Fertilizer Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;Soil and Fertilizer Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;Soil and Fertilizer Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China;Soil and Fertilizer Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China |
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| Abstract: | |
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| Keywords: | leaf-used lettuce nitrogen fertilizer combined application of organic nitrogen and nitrogen nitrogen leaching |
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