Soil Nitrogen and Phosphorus Accumulation,Vegetable Yield and Quality Influenced by Reduction and Optimization of Nitrogen Fertilizer Application

QUAN Zhi; QIN Hong-ling; LI Ming-de; LIU Xin-liang; ZHU Yi-jun; WEI Wen-xue; WU Jin-shui

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Soil Nitrogen and Phosphorus Accumulation,Vegetable Yield and Quality Influenced by Reduction and Optimization of Nitrogen Fertilizer Application

更新时间：2024-11-07

- Soil Nitrogen and Phosphorus Accumulation,Vegetable Yield and Quality Influenced by Reduction and Optimization of Nitrogen Fertilizer Application
- Vol. 25, Issue 3, (2011)
- 作者机构：
  
  1. 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,湖南,长沙,410125
  2. 中国科学院研究生院,北京1000492. 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,湖南长沙,4101253. 湖南省农业科学院土壤肥料研究所,湖南长沙,4101254. 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室,湖南,长沙,410125
  3. 湖南农业大学资源环境学院,湖南,长沙,410128
- 作者简介：
- 基金信息：
- DOI：
  CLC： S147.5S158.3
- Published：2011
- 稿件说明：
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QUAN Zhi, QIN Hong-ling, LI Ming-de, et al. Soil Nitrogen and Phosphorus Accumulation,Vegetable Yield and Quality Influenced by Reduction and Optimization of Nitrogen Fertilizer Application[J]. 2011, 25(3).
DOI：

QUAN Zhi, QIN Hong-ling, LI Ming-de, et al. Soil Nitrogen and Phosphorus Accumulation,Vegetable Yield and Quality Influenced by Reduction and Optimization of Nitrogen Fertilizer Application[J]. 2011, 25(3). DOI：

摘要

针对长期不合理高化肥投入量导致城郊区菜地土壤环境恶化的现状

为探讨氮肥减施对城郊区菜地土壤氮磷累积及蔬菜产量品质的影响

应用田间小区试验

研究了长沙市郊2种不同菜地土壤中

氮肥减施20%与缓释尿素

脲酶抑制剂/硝化抑制剂

土壤调理剂配合施用的环境和农学效应。结果表明:与常规施肥处理相比

采用缓释尿素减施20%化学氮肥(80%N(CRU))有效降低了菜地土壤Olsen-P和NO3--N的含量

减少了其面源污染风险

但该处理蔬菜可食部分容易累积硝酸盐

也增加了食用风险;通过添加脲酶抑制剂/硝化抑制剂减施20%化学氮肥(80%N+QD)

生育中期土壤NH4+-N含量和蔬菜鲜样产量分别增加了69.2%

262.0%(p<0.05)和2.5%

12.1%(p<0.05)

对土壤Olsen-P、NO3--N以及可食部分硝酸盐含量影响不显著;减施20%化学氮肥配以添加土壤调理剂(80%N+SC)在2种种植年限的菜地中效果欠稳定。兼顾经济、食用风险、生态环境等效益

建议在高肥力菜地施肥实践中

氮肥减施与脲酶抑制剂/硝化抑制剂配合施用。

Abstract

In order to explore soil nitrogen and phosphorus accumulation

vegetable yeild and quality influenced by reduction and optimization of nitrogen fertilizer application in peri-urban

two field experiments were carried out in vegetable fields to investigate the environmental and agronomic effects.N was reduced by 20% with following optimized fertilization strategies

referred to as slow-release urea(80%N(CRU));urease/nitrification inhibitors(80%N+QD);soil conditioner(80%N+SC)

respectively.The results showed that...

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