土壤水势下限对寒地水稻品质的影响  

Effects of Lower Limit of Soil Water Potential on Grain Quality of Rice in Cold Region

作　　者：吕艳东[1,2] 郑桂萍[2] 郭晓红[2] 殷大伟[1] 马殿荣[1] 徐正进[1] 陈温福[1] 

机构地区：[1]沈阳农业大学水稻研究所/辽宁省北方粳稻遗传育种重点实验室,辽宁沈阳110161 [2]黑龙江八一农垦大学农学院,黑龙江大庆163319

出　　处：《中国水稻科学》2011年第5期515-522,共8页Chinese Journal of Rice Science

基　　金：国家科技支撑计划资助项目(2006BAD01A01-6;2007BAD65B03-3);公益性行业(农业)科研专项经费资助项目(ny-hyzx07-001);农业科技成果转化资金资助项目(2008GB2B200089)

摘　　要：以垦鉴稻5号和垦稻12为材料,采用负压式土壤湿度计监测土壤水势,通过防雨棚内的盆栽控水试验,研究了水稻返青至成熟期进行-8～-10kPa的间歇控水对寒地水稻品质影响。控水处理降低两品种的整精米率及各粒位籽粒的直链淀粉含量和消减值,提高了两品种各粒位籽粒的总蛋白质含量、球蛋白含量、谷蛋白含量、醇溶蛋白含量、最高黏度值和崩解值。因此,控水处理后,两品种各粒位米饭食味综合评分略有降低。With Kenjiandao 5 and Kendao 12 as materials, the effects of intermittent water-controlling treatments at --8 to -- 10 kPa of soil water potential on rice grain quality in cold region from reviving to maturity were studied in a pot experiment in a chamber rainproof by examining soil water potential with a negative pressure soil moisture meter. The results of showed that head rice rate, amylose content, setback value of grains at different positions decreased, whereas protein content, prolamin content, glutelin content, globulin content, peak viscosity value and breakdown value of grains at different positions increased. Therefore, the rice taste value decreased.

关 键 词：水稻 寒地 土壤水分 品质 

分 类 号：S511[农业科学—作物学]