不同施氮处理对水稻氮素吸收及产量的影响  

Effect of N fertilizer application on nitrogen absorption and yield of rice

作　　者：谢芳[1] 韩晓日[1] 杨劲峰[1] 刘小虎[1] 左仁辉[1] 吴正超[1] 

机构地区：[1]沈阳农业大学土地与环境学院,农业部东北土壤与环境重点开放实验室,辽宁沈阳110866

出　　处：《中国土壤与肥料》2010年第4期24-26,45,共4页Soil and Fertilizer Sciences in China

基　　金：国家科技支撑计划项目(2008BADA4B06);辽宁省重大科技攻关项目(2006215005)

摘　　要：从水稻高效施肥的角度,通过田间小区试验,分析不同施氮肥处理对水稻氮素吸收及产量的影响。结果表明,在一定氮肥施用量范围内,水稻氮素吸收量及产量随氮肥施用量增加而提高,氮肥施用过量时,水稻氮素吸收量及产量降低;等量的氮肥(210 kg.hm-2)处理下,随着追肥次数的增加,其水稻氮素吸收量及产量也随之提高;在基肥∶分蘖肥∶穗肥∶粒肥=3∶3∶3∶1的情况下,水稻氮素吸收量及产量均达到最高水平。From the viewpoint of high-efficiency fertilizing,this paper studied the effect of N fertilizer application on nitrogen absorption and yield of rice by field plot experiment.Results indicated that nitrogen absorption and yield of rice would increase with nitrogen dosage increasing in certain range.It would be decrease when over-fertilization of N.Addition to times of fertilization under equal amount of N fertilizer（210 kg·hm-2）application that nitrogen absorption and yield would increase.In the event that base fertilizer∶tillers fertilizer∶panicle fertilizer∶grain fertilizer=3∶3∶3∶1,nutrient absorption and yield of rice reached the highest level.

关 键 词：水稻 氮肥 产量 氮素吸收 高效施肥 

分 类 号：S511[农业科学—作物学]