优良的不育系是杂种优势利用的关键.近年我国在水稻两用核不育系研究中,已取得了很大的进展和成绩。但早稻的研究则仍属空白.为促进我国南方干旱地区稻作生产的提高,自1986年开始,我们开展了旱稻两系选育的研究.通过6年的广泛人工杂交和选育,已经获得了38个杂交组合后代的不育材料,其中1个高世代(12代)的稳定不育系“昆植 S-1”(籼粳中 Good CMS is the key to the utilization of heterosis.In recent years, China has made great progress and achievements in the research of dual-purpose nuclear male sterile lines in rice. However, the research of early rice is still blank.In order to promote the improvement of rice production in the arid area of ​​southern China, we have conducted the research on the breeding of two-line rice in Upland since 1986. Through six years of extensive artificial breeding and breeding, we have obtained A total of 38 hybrid combinations of male sterile material, including a high generation (12 generations) stable sterile line “Kun S-1” (indica japonica