| 大白菜氮肥施用的产量效应、品质效应和环境效应 |
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| 引用本文： | 李俊良,陈新平,李晓林,张福锁.大白菜氮肥施用的产量效应、品质效应和环境效应[J].土壤学报,2003,40(2):261-266. |
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| 作者姓名： | 李俊良 陈新平 李晓林 张福锁 |
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| 作者单位： | 1. 山东农业大学园艺学博士后流动站
2. 中国农业大学植物营养系,农业部植物营养学重点开放实验室,北京,100094 |
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| 基金项目： | 国家自然科学基金 (3 990 0 0 85 )，国家重点基础研究专项经费 (G1 9990 1 1 80 7)资助 |
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| 摘 要： | 通过 6水平氮肥田间小区试验 ,研究了大白菜氮肥施用的产量效应、品质效应和环境效应。结果表明 ,在本试验条件下 ,大白菜的经济最佳施氮量为 3 1 0kghm- 2 ,大白菜体内硝酸盐含量和氮肥施用后土壤 -作物体系的氮素表观损失随施氮量的增加线性上升 ,大白菜氮肥施用的产量效应、品质效应和环境效应难以协调。采取其它措施降低蔬菜硝酸盐含量 ,改进现有的栽培体系并进行环境经济学的研究 ,是今后蔬菜研究中应着力解决的几个问题。
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| 关 键 词： | 大白菜 氮肥 产量效应 品质效应 环境效应 |
| 收稿时间： | 2001/1/15 0:00:00 |
| 修稿时间： | 2001年1月15日 |
EFFECT OF N FERTILIZATION ON YIELD,NITRATE CONTENT AND N APPARENT LOSSES OF CHINESE CABBAGE |
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| Li Jun-liang,Chen Xin-ping,Li Xiao-lin Zhang and Fu-suo.EFFECT OF N FERTILIZATION ON YIELD,NITRATE CONTENT AND N APPARENT LOSSES OF CHINESE CABBAGE[J].Acta Pedologica Sinica,2003,40(2):261-266. |
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| Authors: | Li Jun-liang Chen Xin-ping Li Xiao-lin Zhang and Fu-suo |
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| Institution: | Li Jun liang 1,2 Chen Xin ping 1 Li Xiao lin 1 Zhang Fu suo 1 |
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| Abstract: | Summary Field experiment with 6 level N rates was conducted in 1998 to study the effects of N rates on yield, nitrate content of Chinese cabbage and N apparent losses. The results showed that, the optimum economic N rate was 310 kg hm -2 (N), the nitrate content of plant and the N apparent losses in soil plant system increased with increasing N rate. It was not possible to coordinate the yield effect, crop quality effect and environmental effect under experimental condition. Reducing vegetable nitrate content by other strategies, improving current planting system and studying environmental economics of fertilization, are the main problems to be solved in the future. |
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| Keywords: | Chinese cabbage N fertilizer Yield effect Quality effect Environmental effect |
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