江苏农业学报2025，Vol.41Issue(12)：2289-2297,9.DOI:10.3969/j.issn.1000-4440.2025.12.001
种植地点和收获期对中粳稻产量和品质的影响
Effects of planting location and harvest time on the yield and quality of high-quality middle season japonica rice
摘要
Abstract
To explore the effects of planting location and harvest time on the yield and quality of Nanjing 5718 and Nanjing 9308,this study planted these two japonica rice varieties in Lianyungang,Lianshui,and Nanjing of Jiangsu pro-vince respectively,with sampling and analysis conducted at different harvest periods.The results showed that japonica rice variety,planting location,harvest time,and their interactions had significant or extremely significant effects on most yield and quality indicators.Overall,the impact of planting location on yield and quality indicators was greater than that of har-vest time.The Lianshui region was suitable for cultivating both Nanjing 5718 and Nanjing 9308,as these two varieties ex-hibited higher 1 000-grain weight and comprehensive eating quality value,along with a lower chalky grain rate in this area.In contrast,Nanjing was not suitable for planting Nanjing 9308,where the variety showed lower 1 000-grain weight,comprehensive eating quality value,and amylose content,but higher chalky grain rate and chalkiness degree.With the delay of harvest time,the 1 000-grain weight,yield,milled rice rate,and compre-hensive eating quality value of both Nanjing 5718 and Nanjing 9308 decreased;meanwhile,the chalky grain rate,chalki-ness degree,and peak viscosity showed an upward trend.Therefore,the optimal harvest time for both varieties is 50 days after heading,and harvesting later than 55 days after heading is not recommended.This study provides a theoretical basis for the production area planning and timely harvest of high-quality rice.关键词
水稻/种植地点/收获期/产量/品质Key words
rice/planting location/harvest time/yield/quality分类
农业科技引用本文复制引用
罗磊,赵庆勇,赫磊,朱镇,张亚东,王才林,陈新红,赵春芳..种植地点和收获期对中粳稻产量和品质的影响[J].江苏农业学报,2025,41(12):2289-2297,9.基金项目
国家重点研发计划项目(2022YFE0117800) （2022YFE0117800）
现代农业产业技术体系项目(CARS-01) （CARS-01）
江苏省农业科技自主创新基金项目[CX(24)2006] （24）
