黄海稻区自20世纪90年代末成功引入三系杂交粳稻大面积制种技术以来,历经18个年头,积累了较丰富杂交粳稻制种技术经验,形成了一整套比较完善的杂交粳稻高产制种技术方案,试制过十多个组合,制种产量也稳中有升,一般产量在1 950kg/hm2,最高产量达到2 625kg/hm2。现将主要制种技术总结如下。1隔离条件采取时间和障碍隔离,充分杜绝外来花粉介入。2错期播种,适期插秧父母本错期播种错期插秧,一般先播父本,时间在 Since the successful introduction of the three-line hybrid rice large-area seed production technology in the late 90’s in the Yellow Sea rice area, it has accumulated rich experience in hybrid rice japonica seed production for 18 years and has formed a set of relatively complete high-yielding seed production techniques for japonica hybrid rice Technical programs, trial production of more than 10 combinations, seed production is also steady rise, the general output of 1 950kg / hm2, the maximum output reached 2625kg / hm2. Now the main seed production technology is summarized as follows. 1 isolation conditions to take the time and barriers to isolation, and fully eliminate foreign pollen intervention. 2 wrong sowing, the appropriate transplanted parents wrongly sow the wrong plantings, the general first sow parent, time in