| 施氮水平对芥菜生长及土壤硝态氮残留的影响 |
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| 引用本文： | 宁建凤,杨少海,邹献中,陈勇,孙丽丽,魏岚,巫金龙.施氮水平对芥菜生长及土壤硝态氮残留的影响[J].热带作物学报,2010,31(8):1329-1334. |
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| 作者姓名： | 宁建凤 杨少海 邹献中 陈勇 孙丽丽 魏岚 巫金龙 |
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| 作者单位： | 广东省农业科学院土壤肥料研究所,广东省养分资源循环利用与耕地保育重点实验室,广东广州,510640 |
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| 基金项目： | 广东省科技厅农业科技攻关计划项目 |
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| 摘 要： | 利用田间小区试验,研究不同氮用量水平(0、112.5、225、337.5kg/hm2)对芥菜生长、养分吸收利用、品质以及土壤硝态氮残留、累积的影响。结果表明,施氮显著增加芥菜产量、促进芥菜植株对氮、磷、钾养分的吸收,且随氮用量增加,芥菜产量和养分吸收量呈增加趋势。芥菜植株氮肥利用率随氮用量增加而降低。施氮明显提高芥菜地上部可溶性糖、维生素C含量及硝酸盐含量,但随氮肥用量的增加,芥菜可溶性糖含量显著降低,硝酸盐含量有增加趋势,维生素C含量没有显著变化。不同处理土壤硝态氮主要分布于0～40cm土层,随土层深度增加,硝态氮含量总体呈现下降趋势。施氮显著增加菜地土壤0～100cm土层硝态氮残留累积量,且硝态氮累积量随氮用量增加显著提高。从兼顾芥菜产量、氮肥有效利用及减轻氮对环境污染等角度考虑,芥菜以225kg/hm2的施氮量较为适宜。
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| 关 键 词： | 氮水平 芥菜 硝态氮残留 |
Effects of Nitrogen Application Rate on the Growth of Mustard and Nitrate Residue in Soil |
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| Ning Jianfeng,Yang Shaohai,Zou Xianzhong,Chen Yong,Sun Lili,Wei Lan and Wu Jinlong.Effects of Nitrogen Application Rate on the Growth of Mustard and Nitrate Residue in Soil[J].Chinese Journal of Tropical Crops,2010,31(8):1329-1334. |
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| Authors: | Ning Jianfeng Yang Shaohai Zou Xianzhong Chen Yong Sun Lili Wei Lan and Wu Jinlong |
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| Institution: | Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation;Soil and Fertilizer Institute, Guangdong Academy of Agricultural Sciences, Guangdong Key Laboratory
of Nutrient Cycling and Farmland Conservation |
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| Abstract: | |
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| Keywords: | Nitrogen level Mustard Nitrate residue |
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