控释掺混尿素对水稻产量、品质和氮肥利用率的影响  

Effects of application of controlled-releasing bulk blending urea on yield,quality and nitrogen utilization efficiency of rice

作　　者：伍少福 韩科峰[2] 吴良欢[2] 石其伟 周永亮 沈菁 高兴友 顾昊男 

机构地区：[1]绍兴市农业技术推广总站,浙江绍兴312000 [2]教育部环境修复与生态健康重点实验室,浙江大学环境与资源学院,浙江杭州310029 [3]绍兴县农技推广中心,浙江绍兴312000

出　　处：《浙江农业学报》2011年第5期983-987,共5页Acta Agriculturae Zhejiangensis

基　　金：绍兴市科技局项目(2009A22011;2010A22013);“十一五”国家科技支撑项目(2006BAD10B07);水专项(2008ZX07101006);公益性行业(农业)科研专项(201003016);浙江省“三农五方”科技协作计划资助

摘　　要：在田间条件下就控释掺混尿素对水稻产量、品质和氮肥利用率的影响进行了研究。结果表明,等氮全量条件下,水稻产量除CRBU+PU与PU1达到显著水平外,其余均无明显差异。减少30%氮肥用量条件下,控释掺混尿素(70%CRBU)显著减产,控释掺混尿素与尿素配施[70%(CRBU+PU)]无显著差异。CRBU+PU和70%(CRBU+PU)处理的氮肥利用率分别达39.6%和38.1%,差异显著;CRBU和70%CRBU利用率仅为30.9%和24.0%,差异不显著。CRBU+PU,CRBU还可提高稻米粗蛋白、糙米率和经济效益,其中CRBU+PU效果最为明显。Effects of application of controlled-releasing bulk blending urea on rice yield, quality and nitrogen utilization efficiency were studied under the field conditions. At the same N rate, the differences of rice yield between each treatment were not significantly except for the treatment of CRBU ＋ PU and PU1. Under the condition of reducing 30% N rate, rice yield of 70% CRBU was significantly deceased, but not for 70% （CRBU ＋ PU）. Nitrogen use ef- ficieneiesofCRBU, CRBU ＋PU, 70% CRBU and 70% （CRBU ＋ PU） were 30. 9%, 39.6%, 24. 0% and 38.1% , respectively. Difference of nitrogen use efficiency between the treatments of CRBU ＋ PU and 70% （ CRBU ＋ PU） were significant, but not between the treatments of CRBU and 70% CRBU. More economic benefits of rice and higher crude protein in the rice and brown rice rate were found in the treatment of CRBU ＋ PU.

关 键 词：水稻 控释掺混尿素 产量 品质 氮肥利用率 

分 类 号：S157.41[农业科学—土壤学]