江西农业学报2018，Vol.30Issue(3)：1-6,6.DOI:10.19386/j.cnki.jxnyxb.2018.03.01
温度与施氮量互作对稻米淀粉RVA谱特性影响的试验研究
An Experimental Study on Effects of Temperature and Nitrogen Application Rate Interaction on Characteristics of Rice Starch RVA Profile
摘要
Abstract
Taking hybrid rice Ganxin 203 and conventional rice Zhong 531 as experimental materials,we studied the effects of temperature and nitrogen application rate interaction on the characteristics of rice starch RVA profile by using the rapid viscosity analyzer. The results showed that: at 38 ℃ high temperature or natural field temperature, Zhong 531 possessed lower amylose content, lower setback viscosity, and higher breakdown viscosity, while Ganxin 203 had higher amylose content, higher setback viscosity, and lower breakdown viscosity;under the condition of applying high level of nitrogen fertilizer,the high temperature in-creased the amylose content in rice grains of above 2 varieties as compared with the natural field temperature;under the condition of applying normal level of nitrogen fertilizer,the high temperature reduced the amylose content in rice grains of 2 varieties;under the condition of applying high or normal level of nitrogen fertilizer,in comparison with the natural field temperature,the high tem-perature reduced the peak viscosity,holding viscosity,breakdown viscosity and final viscosity,and significantly enhanced the set-back viscosity of 2 varieties; at high temperature, all characteristic values(except for setback viscosity)of rice starch RVA pro-file of 2 varieties in high-nitrogen treatment had a small decreasing amplitude than those in normal-nitrogen treatment.关键词
高温/施氮量/早稻/RVA谱/稻米品质Key words
High temperature/Nitrogen application rate/Early rice/RVA profile/Rice quality分类
农业科技引用本文复制引用
聂秋生,杨军..温度与施氮量互作对稻米淀粉RVA谱特性影响的试验研究[J].江西农业学报,2018,30(3):1-6,6.基金项目
公益性行业(气象)科研专项(GYHY201006025) （气象）
江西省气象科技项目(JMBF20170221). （JMBF20170221）
