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| 洞庭湖红壤坡地减氮控磷对玉米产量和径流氮磷的影响 | |
| 引用本文： | 李恩尧,邱亚群,彭佩钦,侯红波,李裕元,任可爱.洞庭湖红壤坡地减氮控磷对玉米产量和径流氮磷的影响[J].水土保持学报,2011,25(4):32-35. |
| 作者姓名： | 李恩尧 邱亚群 彭佩钦 侯红波 李裕元 任可爱 |
| 作者单位： | 1. 中南林业科技大学环境科学与工程研究中心,长沙,410004 2. 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,长沙,410125 3. 湖南省湘阴县农业局,湖南湘阴,410500 |
| 基金项目： | 国家科技支撑计划(2007BAD87B11); 湖南省研究生科研创新项目(CX2010B325); 中南林业科技大学研究生科技创新基金(2008sx11) |
| 摘 要： | 坡地氮磷流失是洞庭湖农业面源污染的重要来源。以湖南省湘阴县红壤坡耕地土壤为研究对象,通过田间小区试验,探讨玉米减量施肥对产量、化肥利用率和氮磷流失量的影响。结果表明,NP常规施肥量在减少20%范围内对玉米产量没有十分显著的影响,但达到30%时玉米表现减产。减量施肥不仅一定程度提高NP化肥肥效和肥料利用率,而且降低土壤NP流失量。氮的径流量减少了12.54%～28.68%,磷减少了1.3%～30.1%。在各种减量施肥处理中,以控释肥减氮处理效果最佳,有效减少农业面源污染。 |
| 关 键 词： | 红壤坡地 农业面源污染 减氮控磷施肥 肥料利用率 洞庭湖 |
Effects of Reduction and Control Nitrogen and Phosphorous on Maize Yield and Surface Runoff in Red Soil Slopes of Dongting Lake |
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| LI En-yao,QIU Ya-qun,PENG Pei-qin,HOU Hong-bo,LI Yu-yuan,REN Ke-ai.Effects of Reduction and Control Nitrogen and Phosphorous on Maize Yield and Surface Runoff in Red Soil Slopes of Dongting Lake[J].Journal of Soil and Water Conservation,2011,25(4):32-35. | |
| Authors: | LI En-yao QIU Ya-qun PENG Pei-qin HOU Hong-bo LI Yu-yuan REN Ke-ai |
| Institution: | LI En-yao1,QIU Ya-qun1,PENG Pei-qin1,HOU Hong-bo1,LI Yu-yuan2,REN Ke-ai3(1.Environmental Science and Engineering Research Center,Central South University of Forestryand Technology,Changsha 410004,2.Key Laboratory of Subtropical Agro-ecology,Institute of SubtropicalAgriculture,Chinese Academy of Sciences,Changsha 410125,3.Xiangyin Agriculture Bureau,Xiangyin,Hunan 410500) |
| Abstract: | The loss of nitrogen and phosphorus in sloping land is an important source of Agricultural non-point source pollution.In this research,the sloping red soil in Xiangyin county,Hunan Province was studied through a field experiment in order to discuss the effect of reducing fertilization on maize yield,the utilization ratio of fertilizer and the loss of N,P.The results showed that N,P fertilizer fluctuating within 20% of the conventional wuold not influnce maize yield very significantly.However,when fertilizer... |
| Keywords: | sloping red soil agricultural non-point pollution reduction and control nitrogen and phosphorous fertilization fertilizer utilization Dongting lake |
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