热带农业科学2025，Vol.45Issue(1)：7-11,5.DOI:10.12008/j.issn.1009-2196.2025.01.002
华南稻区低纬度气候带两系不育系高产繁殖技术研究
Researching on High-yielding Technique of Two-line Hybrid Rice Sterile Line for Low Latitude Climatic Zone in South China
摘要
Abstract
Seed production in Hainan province in winter is the popular method for two-line hybrid rice sterile line,and low yielding is the main problem to be solved.The two-line hybrid rice sterile line ChangS was used as research object in the present study.The temperature sensitive stage of Chang S was analyzed on the base of the climatic characteristics of Lingshui,Hainan,a low latitude zone in south China.The flowering characteristics was coupled with climate of Lingshui to create high-yielding seed production technique for ChangS.The high-yielding model was demonstrated in the field of large area for propogation.The re-sults showed that the daily mean temperature was lower than 23℃.The temperature sensitive stage of Chang S was 7 d before heading.The ideal sowing time was from October 20 to 25.The temperature sensitive stage should be arranged in the range from February 3 to 22,and the flowering time should be from February 20 to 25 in the next year.The seed production yield of new technique was 300.00 kg·mu-1,100 kg higher than experiment field small-scale 200.00 kg·mu-1 of the traditional technique in.experiment.field The yield of new technique was 356.63 kg·mu-1 in large-scale High-yielding seed production technique for ChangS was established,providing theoretical foundation for its application in low latitude climatic zone in south China.关键词
水稻/两系不育系/华南稻区/高产繁殖Key words
rice/two-line hybrid rice sterile line/South China/high-yielding propogation分类
农业科技引用本文复制引用
刘驰,刘伟定,张月雄,秦钢,马增凤,黄大辉..华南稻区低纬度气候带两系不育系高产繁殖技术研究[J].热带农业科学,2025,45(1):7-11,5.基金项目
广西创新驱动发展专项(No.桂科AA22068087-7 （）
No.桂科AA17204049) （）
广西重点研发计划项目(No.桂科AB21220016). （No.桂科AB21220016）
