海城市水稻氮肥最佳施用量试验总结  

An Experiment Summary on Optimum N-fertilizer Application Amount on Rice in Haicheng

作　　者：赵涛[1] 刘吉辉 王明胜 赵震 

机构地区：[1]海城市农业技术推广中心,辽宁鞍山114200 [2]海城市大屯镇农业技术推广站,辽宁鞍山114200 [3]海城市感王镇农业技术推广站,辽宁鞍山114200 [4]海城市八里镇农业技术推广站,辽宁鞍山114200

出　　处：《北方水稻》2010年第5期35-36,62,共3页North Rice

摘　　要：通过田间小区试验,研究该地区水稻施氮肥的增产效果和最佳施用量,结果表明,在海城市高坨镇水稻产区施用氮肥各处理比对照均有明显的增产效果,增产117.8～320.2 kg/667 m2,增产率为26.4%～71.6%,经济效益明显,从水稻产量和肥料价格及经济效益等综合因素考虑,水稻的氮肥最佳施用量为纯N14.7 kg/667 m2,最佳经济产量为732.7 kg/667 m2。A field experiment was carried out to study the optimum application amount of nitrogen fertilizer on rice in Haicheng.The results showed that treatments with nitrogen application obtained higher yield than control with a yield increase by 117.8-320.2 kg/667 m2,and the increasing rate was 26.4-71.6% with higher economic benefit.Considering rice yield,fertilizer price and returns comprehensively,the optimum nitrogen amount was 14.7 kg/667 m2,and the optimum yield was 732.7 kg/667 m2.

关 键 词：水稻 氮肥 产量 最佳施用量 最佳经济产量 经济效益 

分 类 号：S511.062[农业科学—作物学]