水土保持通报2012，Vol.32Issue(2)：40-46,7.
抽穗前水分供应对寒地水稻品质的影响
Effects of Before-heading Water Supply on Quality of Rice in Cold Regions
摘要
Abstract
With Kenjiandao 5 and Kendao 12 as experiment materials,the effects of before-heading water supply on the quality of rice in cold region were studied through pot planting in a rainproof chamber.The soil water potential（SWP） was monitored with negative pressure soil moisture tensiometers.The results show that with intermittent water control at SWP ranged from-10 to-8 kPa during the before heading stage,the whole rice rate was significantly improved for Kenjiandao 5 rather than Kendao 12,and the ratios of length to width decreased for the grains of both varieties.With the before-heading water control,the chalkiness rate and chalkiness degree were improved for the dominant grains and were reduced for the middle grains,implying possible reductions of amylose content for both varieties.Protein contents of all the grains of both varieties were enhanced,while the dominant grains received higher grades in regard to the taste and the middle grains had lower grades.With water controls at SWP of-18~-20 kPa and-28~-30 kPa before heading,the plants of the two varieties performed similar to those with the first treatment,except the chalkiness rate,chalkiness degree and taste grades were reduced for all the grains of both varieties.关键词
寒地水稻/水分供应/品质Key words
rice in cold region/water supply/rice quality分类
农业科技引用本文复制引用
郭晓红,郑桂萍,殷大伟,张淼淼,赵洋,吕艳东..抽穗前水分供应对寒地水稻品质的影响[J].水土保持通报,2012,32(2):40-46,7.基金项目
黑龙江省科技攻关重点项目“黑龙江省水稻大面积均衡优质高产栽培综合配套技术体系研究” （）
黑龙江省科技攻关项目 （）
黑龙江省教育厅科学技术研究面上项目 （）
黑龙江八一农垦大学博士启动基金 （）
