Effects of Water and Nitrogen Supply on Spinach(Spinacia oleracea L.) Growth and SoilMineral N Residues

首页> 外文期刊>土壤圈（英文版） >Effects of Water and Nitrogen Supply on Spinach(Spinacia oleracea L.) Growth and SoilMineral N Residues

【24h】

Effects of Water and Nitrogen Supply on Spinach(Spinacia oleracea L.) Growth and SoilMineral N Residues

机译：水和氮供应对菠菜（Spinacia oleracea L.）生长和土壤矿质氮残留的影响

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Effects of conventional and optimized water and nitrogen managements on spinach (Spinacia olerocea L.)growth and soil mineral N (Nmi.) residues were compared in an open field experiment in which water balancemethod and N recommendation with the KNS-system were included. It was shown that the conventionalwater treatment (seasonal irrigated amount: 175 mm) reduced spinach growth compared to the water balancetreatments (seasonal irrigated amount: 80 and 85 mm) at the same N supply level due to N loss throughleaching caused by excessive water supply. Although 309 kg N ha-1 was applied in the conventional Ntreatment, compared to 82 and 66 kg N ha-l in the optimum N treatments, no significant difference in cropyield was investigated between the N treatments with the same irrigation practice. N uptake in spinach andsoil residual Nmin contents were also significantly affected by the irrigation practices. The conventional watersupply not only decreased water use efficiency, but also

机译：Effects of conventional and optimized water and nitrogen managements on spinach (Spinacia oleracea L.)growth and soil mineral N (Nmin) residues were compared in an open field experiment in which water balance method and N recommendation with the KNS-system were included. It was shown that the conventional water treatment (seasonal irrigated amount: 175 mm) reduced spinach growth compared to the water balance treatments (seasonal irrigated amount: 80 and 85 mm) at the same N supply level due to N loss through leaching caused by excessive water supply. Although 309 kg N ha-1 was applied in the conventional N treatment, compared to 82 and 66 kg N ha-1 in the optimum N treatments, no significant difference in crop yield was investigated between the N treatments with the same irrigation practice. N uptake in spinach and soil residual Nmin contents were also significantly affected by the irrigation practices. The conventional water supply not only decreased water use efficiency, but also resulted in excessive NO-3-N being leached below the root zone. In order to meet the same target value of N requirement for the next crop, cauliflower, based on the KNS-system, at least extra 50 kg N ha-1 was needed in the conventional water treatments in comparison to the water balance treatment.

著录项

来源
《土壤圈（英文版）》 |2002年第2期|171-178|共8页
作者

展开▼
作者单位

Department of Plant Nutrition China Agricultural University Beijing 100094 China;

Institute for Fruit Science Vegetable Science and Viticulture Hohenheim University D-70593 Stuttgart Germany;

展开▼
收录信息中国科学引文数据库(CSCD);
原文格式 PDF
正文语种 chi
中图分类土壤学;
关键词
Nmin residue; spinach; water and nitrogen recommendation;

机译：Nmin残留;菠菜;水和氮的建议;

Effects of Water and Nitrogen Supply on Spinach(Spinacia oleracea L.) Growth and SoilMineral N Residues

摘要

著录项

相关主题

期刊订阅