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通过对近30年来江苏省育成的45个迟熟中粳品种的区域试验资料分析和种植鉴定,了解江苏迟熟中粳品种的育种状况,为新品种选育提供参考依据。区试资料分析表明,江苏近30年来迟熟中粳品种产量连上3个台阶,代表品种为1983年审定的盐粳2号,产量达到500kg/667m2;1992年审定的武育粳3号,产量达到580kg/667m2;1999年审定的武运粳8号,产量达到650kg/667m2。2005年以后育成的品种产量徘徊在600kg/667m2。2012年扬州种植鉴定结果表明,不同时期育成的品种产量为500~600kg/667m2,产量提升不明显。近年来注重品种的外观品质改良,垩白粒率有明显改进,但垩白度和食味品质的改良仍需要加强。
By analyzing the regional trial data of 45 late-maturing middle-season japonica cultivars bred in Jiangsu Province during the past 30 years and identifying the cultivars, the breeding status of late maturing japonica rice cultivars in Jiangsu Province was studied to provide references for the breeding of new varieties. According to the regional test data analysis, the yield of late-maturing middle-aged japonica varieties in Jiangsu Province in recent 30 years was linked to 3 steps, the representative variety was Yanjing 2 which was validated in 1983 and the output reached 500kg / 667m 2. In 1992, Wuyujing 3, The output reached 580kg / 667m2; 1999 approved Wuyunjing 8, the output reached 650kg / 667m2.2005 years after the birth of the output of hovering wandering 600kg / 667m2.2012 years, the results of the estimation of planting in the United Kingdom showed that cultivars produced in different periods yield 500 ~ 600kg / 667m2, yield increase is not obvious. In recent years, pay attention to the appearance of improved quality, chalky grain rate has improved significantly, but the improvement of chalkiness and eating quality still need to be strengthened.