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控释氮肥对稻油产量及氮肥利用的影响
袁嫚嫚,姜振升,孙义祥,叶舒娅,李敏,刘枫
0
(安徽省农业科学院土壤肥料研究所,合肥 230031;国家缓控释肥工程技术研究中心,临沂 276000)
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(N 180 kg·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9 934和2 117 kg·hm-2,增产7.00%和17.03%;控释氮肥处理水稻和油菜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。
关键词:  水稻  油菜  控释氮肥  产量  氮肥利用
DOI:
基金项目:国家“十二五”科技支撑计划(2011BAD11B02)资助。
Effects of different mixture ratios of polyester resin-coated urea to pilled urea on yield and nitrogen efficiency under rice-rape rotation
YUAN Man-man,JIANG Zhen-sheng,SUN Yi-xiang,YE Shu-ya,LI Min,LIU Feng
(Institute of Soil and Fertilizer, Anhui Academy of Agricultural Sciences, Hefei 230031;National Engineering Technology Research Center for CRF, Linyi 276000)
Abstract:
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 indicated the N agronomy efficiency and N partial factor productivity were significantly improved with the mixed application of PCU.
Key words:  rice  rape  controlled release fertilizer  yield  utilization of nitrogen

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