中国农学通报2025，Vol.41Issue(29)：1-6,6.
杂交稻新品种'两优2189'特征特性及丰产稳产适应性探究
Study on Characteristics and Adaptability of High yield and Stable yield in Hybrid Rice New Variety'Liangyou 2189'
摘要
Abstract
In order to clarify the characteristics of the new hybrid rice variety'Liangyou 2189'and its application prospect in production,this study used the data of regional test of middle indica rice in the southern rice area of Henan Province from 2021 to 2022 and the production test data in 2023.The correlation analysis and path analysis of its yield and components were carried out,and the results of rice quality detection and resistance identification were systematically studied.The results showed that the average yield of'Liangyou 2189'in the three-year test were 9295.5 kg/hm2,9651.0 kg/hm2,and 9930.0 kg/hm2,which increased yields compared with the control variety,and the yield increase rate were 87.5%,100%,and 100%.The variation coefficients of the yield in two-year regional test were 4.53%and 9.12%,both smaller than the control variety.The high stability coefficients in three-year test were 89.85%,87.23%,and 92.75%,all higher than the control variety.Among the three elements of yield,the variation coefficient showed:thousand grain weight<grain number per<effective spike number.Thousand grain weight was the most stable,the direct effect played a major role,and effective spike number had the largest variation range,the contribution rate to yield was the largest.In actual production,the key of achieving high yield is to increase the number of basic seedlings,increase the rate of tillers,achieve multiple panicles,take into account the number of grains per panicle and 1000-grain weight,and coordinate the relationship between the three.In summary,the'Liangyou 2189'is a new variety with high yield and stable yield,which can be widely promoted and planted in southern Henan Province and similar ecological areas.关键词
杂交籼稻/'两优2189'/特征特性/丰产稳产性/变异系数/高稳系数/产量Key words
hybrid indica rice/'Liangyou 2189'/characteristics/high yield and stable yield/variation coefficient/high stability coefficient/yield分类
农业科技引用本文复制引用
陈庆明,徐士库,常幸远,张凯璇,申关望,祁玉良,陆云,余林闯,余新春,扶定,沈光辉,霍二伟..杂交稻新品种'两优2189'特征特性及丰产稳产适应性探究[J].中国农学通报,2025,41(29):1-6,6.基金项目
河南省重点研发专项"优质高产绿色高效水稻新品种选育与应用"(231111110500) （231111110500）
河南省科技攻关"水稻优质抗病亲本创制与高产广适新品种选育应用"(252102110261) （252102110261）
国家现代农业产业技术体系建设专项资金"国家水稻产业技术体系信阳综合试验站"(CARS-01-90) （CARS-01-90）
河南省农业产业技术体系建设专项资金"河南省水稻产业技术体系籼稻育种岗位"(HARS-22-03-G2). （HARS-22-03-G2）
