不同施肥制度下紫色土坡耕地氮素流失特征

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 成都山地所知识仓储（2009年以前）

	不同施肥制度下紫色土坡耕地氮素流失特征
	汪涛; 朱波; 况福虹
刊名	水土保持学报
	2005
卷号	19 期号:5 页码:65-68
关键词	施肥制度紫色土坡耕地氮素流失
其他题名	Nitrogen Loss from Slope Cropland of Purple Soil under Different Fertilization
通讯作者	汪涛
合作状况	其它
中文摘要	利用野外径流小区试验．比较了川中紫色土丘陵区12种不同施肥制度下坡耕地侵蚀产沙特征和氮素迁移特征。结果表明，在单次降雨量达到44mm时，相对于不施肥而言，农家肥配施化肥分别降低坡地径流与侵蚀量68．2％，67．3％，秸秆还田配施化肥分别降低80．3％，92．6％。不同施肥制度下随地表径流迁移的颗粒态氮占总氮的比例大部分都在60．0％以上。坡耕地平衡施肥能降低坡耕地土壤氮紊随径流的损失，增施了磷、钾肥后，总氮迁移量分别降低了41．0％和46．1％。与不施肥相比较，农家肥配施化肥减少径流总氮69．0％，秸秆还田配施化肥减少90．5％。
英文摘要	Field runoff plots experiments were performed to monitor runoff, sediment yield and nitrogen loss in slope cropland of purple soil. Results showed that , Fert ilization could reduce runoff and sediment yield of slope cropland. Application of manurewith chemical fertilizer could reduce 68. 2% , 6713% of runoff and sediment yield1 Straw returned with chemical fert ilizer could reduce 8013%, 9216%. Particle nitrogen transport following runoff is the main pathway in slope cropland of purple soil because yield of particle nitrogen was above of 6010% of total nitrogen. Balanced fert ilization can reduce the n-i trogen loss significantly through runoff in slope cropland. Applicat ion of N with P and K fertilizer could reduce 4110% and 4611% of total N compared with single N fertilizer application. Single chemical fert ilizer could reduce 3615% of total n-i trogen. And manure with chemical fertilizer could reduce 6910% of total nitrogen. Straw returned with chemical fertilizer could reduce 9015% of total nitrogen. So that rational fertilization system could reduce the nitrogen loss from slope cropland. And straw returning has the best effect.
分类号	S158
资助信息	中国科学院知识创新工程项目(KZCX2-413)(、KZCX3-SW-330)
语种	中文
公开日期	2010-07-12
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/556]
专题	成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
推荐引用方式 GB/T 7714	汪涛,朱波,况福虹. 不同施肥制度下紫色土坡耕地氮素流失特征[J]. 水土保持学报,2005,19(5):65-68.
APA	汪涛,朱波,&况福虹.(2005).不同施肥制度下紫色土坡耕地氮素流失特征.水土保持学报,19(5),65-68.
MLA	汪涛,et al."不同施肥制度下紫色土坡耕地氮素流失特征".水土保持学报 19.5(2005):65-68.