氮肥运筹对北方超级稻水稻氮素利用率的影响  

Effect of N-Management on the Nitrogen Using Efficiency of North Super Rice

作　　者：李珣[1] 苗立新[1] 孙杰[1] 刘忠卓[1] 姚红军[1] 

机构地区：[1]辽宁省盐碱地利用研究所,辽宁盘锦124010

出　　处：《北方水稻》2014年第5期15-18,共4页North Rice

摘　　要：以超级稻品种沈农265和铁粳7号为试材,研究了氮肥运筹对北方超级稻水稻氮素利用率的影响。研究结果表明:沈农265和铁粳7号的总吸氮量随施氮量的增加而增加,而氮素回收率和氮素收获指数呈降低趋势,铁粳7号的氮素生理利用率以中氮水平最高。前氮后移处理下,不同品种间总吸氮量、氮素回收率、氮素收获指数及氮素生理利用率的变化趋势存在较大差异。Effect of N-management on the nitrogen using efficiency of north super rice were researched by using Shennong-265 and Tiejing-7 as experiment material. The result indicated that amount nitrogen can increased with the nitrogen＇s improvement on Shennong-265 and Tiejing-7, but the nitrogen recovery rate（NRR） and nitrogen harvest index（NHI） tends to decrease,nitrogen physiological utilization efficiency achieve its highest with mid nitrogen level on Tiejing-7. There are large differences on treatment of INM, amount nitrogen, recovery rate of nitrogen, nitrogen harvest index and nitrogen physiological utilization efficiency among different varieties.

关 键 词：氮肥运筹 利用率 吸氮量 

分 类 号：S511.062[农业科学—作物学]