Study of Nitrate Leaching from Artificial Grassland under Sheep Manure Application

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Study of Nitrate Leaching from Artificial Grassland under Sheep Manure Application

更新时间：2024-11-07

- Study of Nitrate Leaching from Artificial Grassland under Sheep Manure Application
- Issue 2, Pages: 53-56(2007)
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- Published：2007
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Study of Nitrate Leaching from Artificial Grassland under Sheep Manure Application[J]. 2007, (2): 53-56.
DOI：

Study of Nitrate Leaching from Artificial Grassland under Sheep Manure Application[J]. 2007, (2): 53-56. DOI：

摘要

采用SRC（Soil-Resin-Core）装置，研究了三峡库区草畜配套体系中羊粪还田量与硝态氮淋失量的关系。研究结果表明，有机肥本身即可产生硝态氮在土壤中的累积，羊粪施肥量越高，土壤硝态氮累积量和全氮含量就越高。随着施肥次数的增加，全氮含量整体呈上升趋势，硝态氮含量因降雨、气温和牧草生长等因素的影响，存在明显的季节性。元月份土壤中的硝态氮含量显著高于其它季节。相关分析表明：土壤全氮和硝态氮含量影响20cm土层中硝态氮的淋失量，三者之间呈显著正相关关系；施肥提高了人工草地的产草量，但施肥量过高，草地产量下降，增加了氮素损失的可能性。在一定的产草量下，人工草地可容纳的羊粪量高于单位土地面积承载羊只所产生的羊粪量。说明在三峡库区发展集约化的种草养羊业，羊粪直接还田，从资源环境的角度分析是可行的。

Abstract

With soil-resin-core equipment

correlation between sheep manure application and nitrate leaching amount under grassland-farming system in three gorges region was studied. Results showed that there had nitrate accumulation of organic fertilizer in soil. Nitrate accumulation and total soil nitrogen content increased with increasing manure application. Nitrate content in soil changed seasonally because of changing precipitation

temperature and grass growth and highest content was found in January. Total soil nitrogen content and nitrate content significantly influenced nitrate leaching amount from 20 cm depth soil

they had significant positive correlation. Manure application significantly increased grass yields while surplus application decreased yields and increased nitrate leaching possibility. Under certain grass yields

carrying capacity of sheep manure by pasture was higher than the manure produced from sheep breed on certain area of pasture. With manure returned to pasture

it is feasible to develop confinement rearing in three gorges region based on resources and environment.

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Related Institution

LI Wei,LI Xu-hua,TANG Shen-xin,LI Hai-yan,LIU Xu-feng,PENG Qiang(College of Resources and Environment,Shandong Agricultural University,Taian,)

ZHANG Yu-feng,DONG Liang,LI Yan,LIU Zhao-hui,BIAN Wen-fan,LIU Ping(Institute of Agricultural Resources and Environment,Shandong Academy of Agricultural Science,Key Laboratory of Invention and Manufacture of New Type Fertilizer,Ministry of Agriculture of PRC,Shandong Provincial Engineering Research Center of New Type Fertilizer,)

QUAN Zhi1,2,QIN Hong-ling1,LI Ming-de3,LIU Xin-liang1,4,ZHU Yi-jun1,WEI Wen-xue1,WU Jin-shui1(1.Key Laboratory of Agro-ecological Processes in Subtropical Region,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha,Hunan 410125,2.Graduate University of Chinese Academy of Sciences,Beijing 100049,3.Institute of Soil and Fertilizer,Hunan Academy of Agricultural Sciences,4.College of Resource and Environment,Hunan Agricultural University,Hunan 410128)

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

湖南农业大学资源环境学院

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