Reasonable dry cultivation methods can balance the yield and grain quality of rice  

作　　者：Jia Wu Luqi Zhang Ziyi Wang Fan Ge Hao Zhang Jianchang Yang Yajie Zhang 

机构地区：[1]Jiangsu Key Laboratory of Crop Genetics and Physiology,Co-Innovation Center for Modern Production Technology of Grain Crops,Yangzhou University,Yangzhou 225009,China

出　　处：《Journal of Integrative Agriculture》2025年第3期1030-1043,共14页农业科学学报(英文版)

基　　金：he National Key Research and Development Program of China(2022YFD2300304);the National Natural Science Foundation of China(31671617);a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD),China。

摘　　要：Reducing water consumption in rice production in China without affecting grain yield and quality is a significant challenge.This study explored how various dry cultivation methods could improve rice quality while balancing yield to maintain sustainable rice production.A japonica upland rice cultivar and a japonica paddy rice cultivar were cultivated in the field with three cultivation methods:plastic film mulching dry cultivation(PFMC),bare dry cultivation(BC),and continuous flooding cultivation(CF)as control.There was no significant difference in upland rice yield between PFMC and BC,nor in paddy rice yield between PFMC and CF.Compared with CF,the two varieties'yields decreased significantly with BC.Dry cultivation,especially PFMC,could decrease the active filling period,chalky rice rate,chalkiness,amylose content,gel consistency,breakdown viscosity,the ratio of glutelin to prolamin,and leaf senescence while increasing water use efficiency,protein components content,setback viscosity,grain starch branching enzyme(Q-enzyme)activity,and average filling rate.Compared with paddy rice,upland rice had a lower yield,shorter active filling period,lower chalkiness grain rate and gel consistency,higher amylose content,breakdown viscosity,protein components content,and average filling rate.Grain Q-enzyme activity and grain-filling parameters were closely related to rice quality.Reasonable dry cultivation methods could balance yield and quality,especially by improving rice's nutritional and appearance quality.

关 键 词：RICE dry cultivation grain quality YIELD protein components grain filling 

分 类 号：S511[农业科学—作物学]