江苏省不同种植地点常规稻与杂交稻产量及其构成因素的比较分析OA

This study compared plant height,tillering dynamics,yield,and yield components of conventional and hybrid rice varieties across multiple sites in Jiangsu Province,and further explored the effects of rice varieties and planting environment on rice yield formation.The re-sults showed that hybrid rice consistently outperformed conventional rice,exhibiting greater plant height,stronger tillering ability,and higher grain numbers per panicle,despite lower seedling and panicle densities.Correlation analysis revealed that conventional rice yield was positive-ly correlated with grain numbers per panicle,whereas hybrid rice yield was primarily positively associated with the seed-setting rate.Addition-ally,planting locations significantly influenced the rice yield and its components,as well as their associations.Both conventional and hybrid rice yield were negatively correlated with soil available phosphorus,while hybrid rice yield was positively correlated with monthly mean temper-ature and total nitrogen content.These findings elucidated the differences in yield formation between conventional and hybrid rice in Jiangsu Province and their relationships with environmental factors,providing theoretical guidance for efficient cultivation managements of both conven-tional and hybrid rice in Jiangsu Province.