结实期施氮对水稻空育131品质的影响  

Effect of Nitrogen Fertilizer on the Quality of the Kongyu 131 in Seed Setting Stage

作　　者：王龙[1] 仲维君 张丽微[1] 黄成亮[1] 潘世驹 姜玉伟[1] 赵婷婷[1] 宋泽[1] 周健[1] 钱永德[1] 

机构地区：[1]黑龙江八一农垦大学农学院黑龙江省普通高校寒地作物栽培技术重点实验室,黑龙江大庆163319

出　　处：《四川农业大学学报》2016年第1期19-23,共5页Journal of Sichuan Agricultural University

基　　金：黑龙江省重大科技招标项目(GA14B102-03);黑龙江八一农垦大学博士启动基金项目(寒地水稻育苗技术关键技术研究);农垦总局科技攻关项目(HNK125B-08-21A)

摘　　要：【目的】研究结实期不同施氮量对寒地水稻品质的影响,为结实期合理施氮提供理论依据。【方法】采用随机区组设计,研究结实期5个施氮水平对空育131品质的影响。【结果】空育131的碾磨品质与结实期施氮量呈单峰曲线,施氮量22.5kg/hm^2有最适值;垩白粒率与垩白度随着施氮量的增加而增加;蛋白质含量呈单峰曲线且与对照差异显著,但直链淀粉和脂肪酸含量与对照差异不显著;结实期施用低氮量时,对稻米品质影响不明显,但在最高肥量90kg/hm^2空育131的食味综合有明显降低趋势。【结论】在寒地条件下,施氮22.5kg/hm^2时,空育131的品质为佳。【Objective】The aim of this study was to explore the effects of different nitrogen fertilizer on the quality of Kongyu 131 during the grain filling stage and to provide a theoretical basis for reasonable application of nitrogen fertilizer.【Method】Effects of 5different nitrogen fertilizer on the quality of Kongyu 131 were investigated using randomized block design during the grain filling stage.【Results】The milling quality of Kongyu 131 and nitrogen rate in seed setting period showed a single peak curve.There was an optimal value when the nitrogen rate was 22.5kg/hm^2.The chalky rice rate and chalkiness degree both increased with an increase in nitrogen rate.The protein content showed a single peak curve and the difference was significant.However,there were no significant differences in amylose and fatty acid contents between treatments.The effect of low nitrogen on rice quality was not obvious but the comprehensive taste of Kongyu 131 showed decreasing trend when the nitrogen fertilizer rate was 90kg/hm^2.【Conclusion】In cold regions,when the amount of nitrogen fertilizer is 22.5kg/hm^2,Kongyu 131 quality is the best.

关 键 词：空育131 结实期 氮肥 品质 

分 类 号：S511[农业科学—作物学]