控释尿素对吉林春玉米产量和氮肥利用率的影响  

Effects of Controlled Release Urea on Maize Yield and Apparent N Recovery Rates of Spring Maize in Jilin Province

作　　者：王恒[1] 姜亦梅[1] 赵兰坡[1] 

机构地区：[1]吉林农业大学资源与环境学院,长春130118

出　　处：《中国农学通报》2011年第5期126-129,共4页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划项目(2006BAD02A10);吉林省科技厅重大项目(20070429);吉林省科技厅重点项目(20100424)

摘　　要：为了研究控释尿素对吉林春玉米产量和氮肥利用率的影响,通过不同的控释尿素和普通尿素施用量对吉林春玉米进行处理,在吉林省公主岭市陶家屯进行控释尿素施用效果田间小区试验。试验结果表明,全氮用量和75%氮用量情况下,控释尿素与普通尿素相比,对吉林春玉米增产分别为10.8%和8.1%,产量差异显著;且控释尿素与普通尿素混施增产效果高于控释尿素单一施用效果,增产7.3%。全氮用量和75%氮用量条件下,控释尿素氮素利用率分别为50.4%和57.3%,显著高于普通尿素,且75%氮用量氮素利用率高于全氮用量。Field plot experiments were conducted to investigate the effects of different application quantities of controlled-releases urea and common urea on spring maize yield and apparent N recovery rates at maize foundation seed farm, Taojia, Jilin Province. The results showed that in comparison with common urea, the controlled release urea at 100% and 75% application rates increased the spring maize yield rate by 10.8% and 8.1%, the difference was significant. Mixed application of controlled release N and common N could increase maize yield obviously by 7.3%. In comparison with common urea, the controlled release urea at 100% and 75% application rates increased the apparent N recovery rates by 50.4% and 57.3% and 75% application rates was higher than 100% application rates.

关 键 词：控释尿素 普通尿素 春玉米 产量 氮肥利用率 

分 类 号：S143.15[农业科学—肥料学]