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分析了中国北方发展杂交稻的必要性。通过对目前北方杂交粳稻科研、生产中所取得成果及存在问题的分析认为 :①丰富不育系类型 ,改善其生理特性 ;②降低两用系育性转换温度 ,在北方开发高温敏反向不育系 ;③选育形态倾籼、特异亲粳的高配合力强恢复系 ;④揭示杂交粳稻自身生理特性 ,开发相应的栽培技术 ;⑤注重杂交稻的生态效益这5个方面是北方杂交粳稻逐渐发展壮大的有力技术支持。
The necessity of developing hybrid rice in northern China was analyzed. Based on the analysis of the achievements and existing problems in the research and production of japonica hybrid rice in northern China, it is concluded that: (1) enriching the types of CMS and improving its physiological characteristics; (2) reducing the temperature of fertility conversion of dual-purpose lines and developing the thermosensitive reverse Fertile lines; ③ breeding progenies and specific pro-Japonica high with strong restorer lines; ④ revealed its own physiological characteristics of hybrid japonica rice, develop appropriate cultivation techniques; ⑤ focus on the ecological benefits of hybrid rice in these five areas is the northern hybrid japonica rice Gradually grow strong technical support.