We integrated predecessors ' research about the type of chinese japonica hybrid rice in different period , combined with ages of practice , discussing respectively b7 comprehensive analysis about the type of japonica ternary hybrid rice and two - line hybrid rice germplasm 摘要整合前人在不同时期对中国杂交粳稻类型的研究，结合多年的实践，通过综合分析，分别论述了粳型三系杂交稻和二系杂交稻种质资源的类型。
Hybrid rice in china has been developing from three - line hybrid rice to two - line hybrid rice and then to super hybrid rice , in which a number of great sci - tech achievements have been made and played a very important role in ensuring the food security of china and even the world 摘要杂交水稻经历了由三系杂交稻、两系杂交稻到超级杂交稻的发展历程，取得了一系列重大科技成果，对中国乃至世界的粮食安全做出了巨大贡献。
Using the regional trial data of guangdong hybrid rice in 1994 and 1995 , and regional trial data of national late hybrid indica rice in 1995 and 1996 , by t test , variation coefficient and regress coefficient , analysis and compare with the fertility character , steady character and adaptive character of teyou 524 and ck ( shanyou 63 , shanyougui 33 ) , the result showed : it was obviously that the fertility character and adaptive character of teyou 524 was better than ck , but steady character was between shanyou 63 and shanyougui 33 , it was a quite good lat - mature and high - yield new hybrid rice combination 摘要利用1994和1995两年广东省杂交稻区域性试验资料以及1995和1996两年全国?型杂交晚稻区域性试验资料，通过t检验、变异系数和回归系数分别对特优524和对照种（汕优63 、汕优桂33 ）的丰产性、稳定性和适应性进行分析和比较，结果表明：特优524的丰产性、适应性均明显地优于对照种，而稳定性则次于汕优63 ，但好于汕优桂33 ，是一个较为理想的迟熟高产杂交稻新组合。
