应用生态学报2018，Vol.29Issue(4)：1240-1248,9.DOI:10.13287/j.1001-9332.201804.023
有机无机肥配施对旱地冬小麦产量和硝态氮残留淋失的影响
Effects of combined application of chemical fertilizer and organic manure on wheat yield and leaching of residual nitrate-N in dryland soil
摘要
Abstract
The effects of optimum nitrogen (N) fertilization rate with and without adding manure on wheat yield and leaching of residual nitrate-N in soil profile were examined in Weibei dryland,Shaanxi with a field experiment combined different N fertilization rates (0,75,150,225,300 kg N · hm-2) and organic manure (0 and 30 t · hm-2).The results showed that,compared to chemical N fertilizer,combined application of inorganic fertilizer and organic manure increased winter wheat yield by 14.7％ when N fertilization rate was reduced by 27.1％.The highest yield was obtained when 150 kg · hm-2 of N rate was combined with the manure (N150+M).The combination of N fertilizer and manure promoted N uptake of wheat grain and increased N use efficiency by 20.2％.The highest N use efficiency was recorded in the N150+M treatment.In addition,the leaching of residual nitrate-N during the wheat growing season and the leaching of nitrate-N during summer fallow were decreased.When N application rate was lower than 115 kg · hm-2,N fertilizer combined with organic manure reduced the amount of nitrate-N leaching in summer fallow.We recommend the combined application of organic manure with about 150 kg · hm-2 of N fertilizers in Weibei dryland to guarantee high winter wheat yield,N use efficiency,and reduce excessive residue of fertilizer N in the soil.关键词
冬小麦/硝态氮残留/淋失/夏闲期/氮矿化Key words
winter wheat/residual nitrate-N/leaching/summer fallow/nitrogen mineralization引用本文复制引用
马臣,刘艳妮,梁路,翟丙年,张昊青,王朝辉..有机无机肥配施对旱地冬小麦产量和硝态氮残留淋失的影响[J].应用生态学报,2018,29(4):1240-1248,9.基金项目
本文由国家科技支撑计划项目(2015BAD23B04)、公益性行业(农业)科研专项(201503124)、国家自然科学基金项目(31772389)和国家小麦现代产业技术体系建设专项(Z225020803)资助 （2015BAD23B04）
This work was supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2015BAD23B04),the Special Scientific Research Fund of Agricultural Public Welfare Profession of China (201503124),the National Natural Science Foundation of China (31772389) and the Earmarked Fund for Modern Agro-industry Technology Research System (Z225020803). （2015BAD23B04）
