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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* 国家自然科学基金(39900085);国家重点基础研究专项经费(G1999011807)资助


EFFECT OF N FERTILIZATION ON YIELD,NITRATE CONTENT AND N APPARENT LOSSES OF CHINESE CABBAGE
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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310kgh m-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.

    Abstract:

    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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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. DOI:10.11766/trxb200101150215 Li Jun-liang, Chen Xin-ping, Li Xiao-lin Zhang, 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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  • 收稿日期:2001-01-15
  • 最后修改日期:2001-10-15
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  • 在线发布日期: 2013-02-25
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