华北农学报Issue(z1)：299-304,6.DOI:10.7668/hbnxb.2014.S1.056
不同水肥组合对岗南水库周边冬小麦-夏玉米体系中氮素平衡及淋失的影响
Effect of Different Water-Fertilizer Groups on Nitrogen Balance and Leaching in Wheat-Maize Cropping System Surrounding Gangnan Reservoir
摘要
Abstract
According to the serious eutrophication status of Gangnan reservoir ,reducing the N leaching in maxi-mum when meeting the need of crop growth is the only way for minimizing the non-point pollution in cropland .In this study ,balance theory of nitrogen was used to research the effect of water-fertilizer coupling on surplus or loss of nitrogen .The results showed that fertilization and irrigation both effected NO 3-N leaching to deep soil layer ,and fer-tilization was the prominent factor .N in 0-140 cm soil layer of water-fertilizer combination was surplus except CK . Leaching NO3-N under 140 cm was between 35.23-212.53 kg/(ha· a) with different water and fertilizer.The most environmental friendly combination was NconW2,and it reduced the nitrogen leaching 141.19 kg/(ha·a) than N2 W2 ,the rate was 80%.The reasonable fertilizer and irrigation can effectively decrease the nitrogen leaching ,im-prove the fertilizer utilization efficiency ,and reduce the menace from nitrate to groundwater in Wheat-maize cropping fields surrounding Gangnan reservoir .关键词
岗南水库/冬小麦-夏玉米/氮素平衡/氮淋失Key words
Gangnan reservoir/Wheat-maize/Nitrogen balance/Nitrogen leaching分类
农业科技引用本文复制引用
郝桂琴,王凌,张国印,茹淑华,耿暖,孙世友..不同水肥组合对岗南水库周边冬小麦-夏玉米体系中氮素平衡及淋失的影响[J].华北农学报,2014,(z1):299-304,6.基金项目
国家科技支撑计划课题项目（2012BAD15B02）；国土资源部地质调查项目（200040007-3-11）；河北省自然科学基金项目（C2013301068）；石家庄科学技术研究与发展计划项目 （）
