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Ⅱ优42是江苏丘陵地区镇江农业科学研究所于2001年用Ⅱ-32A与镇恢42测配而成的迟熟杂交中籼稻新组合。该组合于2003~2004年参加长江中下游中籼迟熟组区试,2004年破格参加生产试验,2005年通过国家农作物品种审定委员会审定。Ⅱ优42制种一般产量3.57 t/hm2,最高产量达5.58t/hm2。
Ⅱ you 42 is a new combination of late maturity indica rice in Zhenjiang Academy of Agricultural Sciences in hilly area of Jiangsu in 2001 with Ⅱ-32A and Zhenhui 42. The combination in 2003 to 2004 to participate in the middle and lower reaches of the Yangtze River mid-late indica group area test, in 2004 to participate in production trials, in 2005 through the National Crop Variety Approval Committee. Ⅱ You 42 seed production general output 3.57 t / hm2, the maximum output of 5.58t / hm2.