脲酶抑制剂对夏玉米产量及氮肥利用率的影响  

Effects of Urease Inhibitor on Summer Maize Yield and N Use Efficiency

作　　者：韩宝文[1] 贾良良[1] 肖焱波[2] 孙彦铭[1] 

机构地区：[1]河北省农林科学院农业资源环境研究所,石家庄050051 [2]云南民族大学化学与生物技术学院,昆明650550

出　　处：《玉米科学》2011年第4期116-120,共5页Journal of Maize Sciences

基　　金：国家科技支撑计划(2007BAD87B02-02);公益性行业科研专项(200803030);河北省科技支撑项目(09220903D)

摘　　要：2007～2009年在河北省正定、辛集、深州等地,对添加不同浓度脲酶抑制剂尿素在夏玉米上的应用效果进行评价。结果表明,添加不同浓度脲酶抑制剂的尿素对夏玉米有一定的增产效应,增产幅度为1.7%～20.5%。肥料利用率和收获后土壤无机氮含量均较普通尿素有明显的提高,表明脲酶抑制剂能显著减少尿素在土壤中的氮素损失。In 2007 - 2009 summer maize seasons, serial experiments were conducted in Zhengding, Xinji and Shenzhou areas in Hebei province to compare the effects of nitrogenous fertilizer with different concentration of urease inhibitor on maize. The results showed yield increasing rate of urea with different urease inhibitor concentration were among 1.7% to 20.5%. Compared to the normal Urea, the nitrogen use efficiency and after harvest soil Nmin for urea with different urease inhibitor concentration were significantly increased, which suggested the urease inhibitor may greatly reduce the nitrogen lost in the Urea-N transformation process in soil.

关 键 词：夏玉米 脲酶抑制剂 氮肥利用率 产量 

分 类 号：S513.062[农业科学—作物学]