我国杂交水稻的形势与战略

我国杂交水稻从开始研究至今已有３０年历史，已为我国粮食生产作出了巨大贡献。要进一步发展杂交水稻，必须通过育种方法和材料的改进来提高组合的多样化、产量潜力、品质、抗性和制种产量。两系杂交稻正在走向成功，三系杂交稻在本世纪仍将是主力。杂交水稻国际开发前景可观。

CurrentStatus and Strategies of HybridRice in China

It has been 30 years of hybrid rice programme in China since l964 and has formed a compre- hensive system from breeding,seed production to commercial production,Hybrid rice has made a tremendouscontribution to grain production in China and has brought great social and economic benefit to Chinese peo-ple. But the yield potential of existing three-line intervarietal hybrids have reached a plateau and the sourcesof cytoplasmic male sterility are poor.The grain quality for most of the existing rice hybrids belongs to midor poor classes.For further development of hybrid rice,the strategy is to improve the adaptability to variouseco-systems,yield potential,grain quality, disease and insect pest resistance and seed production yield ofrice hybrids through new breeding methods and germplasms. Recently two-line system hybrid is going toget success and meanwhile the three- line system intervarietal hybrid is still the majority of rice hybrids inproductionbythe year of 2000.Many countries in the world have started hybrid rice programmes, which means there is a bright futureof international market for hybrid rice for China. There are many ways for sharing Chinese hybrid rice tech- niques such as transfering of techniques or hybrid combinations,seed production and supplying in or outsideChina and technical trainings,with other countries.