Water Management for Improvement of Rice Yield,Appearance Quality and Palatability with High Temperature During Ripening Period

作     者：Yuji Matsue Katsuya Takasaki Jun Abe Yuji MATSUE;Katsuya TAKASAKI;Jun ABE

作者机构：Global Innovation CenterKyushu UniversityMinami-kuFukuoka 815-8540Japan AGL CoLtdAsoKumamoto 869-2225Japan Faculty of AgricultureTokai UniversityHigashi-kuKumamoto 862-8652Japan 

出 版 物：《Rice science》 (水稻科学（英文版）)

年 卷 期：2021年第28卷第4期

页      面：409-416,I0038页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 09[农学] 0901[农学-作物学] 0836[工学-生物工程] 0902[农学-园艺学] 

基　　金：supported by the grants from the Project of the National Agriculture and Food Research Organization Bio-oriented Technology Research Advancement Institution in Japan(the Special Scheme to Create Dynamism in Agriculture Forestry and Fisheries through Deploying Highly Advanced Technology)(Grant No.shoNavi1000)。 

主　　题：appearance quality root activity high-temperature ripening damage palatability saturated irrigation soil temperature water management rice yield intermittent irrigation flooded irrigation 

摘      要：To clarify the optimal water management in large-scale fields under high temperatures at the ripening period,effective water managements during this period for improvement of yield,appearance quality and palatability were investigated.Compared with intermittent irrigation and flooded irrigation,the soil temperature with saturated irrigation remained low throughout the day,and the decrease rate of the bleeding rate of hills was the lowest.These results suggested that the saturated irrigation maintained root activity.For the three irrigation types,the number of spikelets per m2 and 1000-grain weight were similar,however,saturated irrigation resulted in significantly higher rice yield due to improvement in the percentage of ripened grains.The saturated irrigation produced a high percentage of perfect rice grains and thicker brown rice grain,furthermore,the palatability of cooked rice was excellent because protein content and hardness/adhesion ratio were both low.Thus,under high-temperature ripening conditions,soil temperature was lowered and root activity was maintained when applying saturated irrigation after heading time.The results indicated that saturated irrigation is an effective countermeasure against high-temperature ripening damage.