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杂交水稻的培育成功並在生产上大面积推广应用,是我国农业科学的重大突破。继南方籼稻三系配套以后,北方粳稻三系也已配套,並在生产上大面积应用。1977年我省从辽宁引入黎明、丰锦、早丰三个粳稻杂交组合,在历城、即墨、鱼台、郯城、莒县等地进行了试种示范,不论作春稻或夏稻,都表现了明显的杂交优势。试种结果亩产1000—1200斤,比同类型的常规品种增产二成左右。
The successful breed of hybrid rice and large-scale popularization and application in production are major breakthroughs in agricultural science in our country. Following the Southern three lines of indica rice matching, the northern part of japonica rice has also been supporting, and production in large areas. In 1977, our province introduced three hybrid combinations of dawn, Fengjin and Zaifeng from Liaoning Province and carried out trial demonstration in Licheng, Jimo, Yutai, Tancheng and Yixian, Showed obvious hybridization advantage. Test results of mu produce 1000-1200 jins, than the same type of conventional varieties yield about two percent.