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北方杂交粳稻的优势是显著的，对其育种攻关应持积极乐观的态度．对杂交粳稻生产上停滞滑坡的原因作了分析，在选育力量相对较弱和繁殖制种体系不健全的条件下，其推广利用的速度要求不能过急。从新组合高产、优质、多抗和易于制种的要求出发，在继续改良恢复系的同时，强调了矮秆、优质、抗病、配合力高、开花习性好的保持系的选育及不育系的转育。
The advantage of hybrid japonica rice in the north is significant, and its breeding attitude should be positive and optimistic. The reasons for the stagnant landslide in hybrid japonica rice were analyzed. Under the conditions of relatively weak breeding power and imperfect breeding system, the speed of popularization and utilization of japonica hybrid rice can not be too rapid. Based on the new combination of high yield, high quality, multiple resistance and easy seed production, while continuing to improve the restorer line, the selection and infertility of maintainer lines with dwarf, high quality, disease resistance, high combining ability and good flowering habits were emphasized Department of transfer.