控释氮肥对稻油产量及氮肥利用的影响  

Effects of different mixture ratios of polyester resin-coated urea to pilled urea on yield and nitrogen efficiency under rice-rape rotation

作　　者：袁嫚嫚[1] 姜振升 孙义祥[1] 叶舒娅[1] 李敏[1] 刘枫[1] 

机构地区：[1]安徽省农业科学院土壤肥料研究所,合肥230031 [2]国家缓控释肥工程技术研究中心,临沂276000

出　　处：《安徽农业大学学报》2013年第6期1028-1033,共6页Journal of Anhui Agricultural University

基　　金：国家"十二五"科技支撑计划(2011BAD11B02)资助

摘　　要：在2009—2011年连续3年4季田间试验条件下，研究树脂包膜尿素和普通尿素不同掺混比例对水稻．油菜轮作系统中的作物产量和氮肥利用率的影响。结果表明，与当地农民习惯施用普通尿素处理（N180kg·hm-2）相比，等氮量下控释氮肥与普通尿素用量为7：3的控释氮肥处理水稻和油菜增产效果最好，平均产量分别为9934和2117kg·hm-2，增产7．00％和17．03％；控释氮肥处理水稻和油莱的氮肥吸收利用率平均分别增加9．76—25．84和3．85～10．67个百分点，氮肥农学利用率和偏生产力也有显著增加。The effects of different mixture ratios of polyester resin-coated urea （PCU） to prilled urea （PU） on yield and nitrogen （N） efficiency under rice-rape rotation was investigated via field experiments during 2009 - 2011. The results showed that compared to the treatments of PU at the N application rate of 180 kg·hm-2 as conventional management practices for local famers, the average yields of rice and rape were 9 934 and 2 117 kg.hm-2 under the treatment of PCU mixed with PU （PCU： PU, 126：54 kg.hm-2）, which significantly increased by 7.00% and 17.03%, respectively. The application of PCU significantly increased N uptake efficiency for rice and rape by 9.76%-25.84% and 3.85%-10.67%, respectively, as compared to the conventional practices. These results indi- cated the N agronomy efficiency and N partial factor productivity were significantly improved with the mixed application of PCU.

关 键 词：水稻 油菜 控释氮肥 产量 氮肥利用 

分 类 号：S143.1[农业科学—肥料学]