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１９９９年全国北方稻区水稻品种区试共组织了豫粳６号组、津稻１１８７组、中丹２号组、秋光组和吉玉粳组５个熟期组的区试及豫粳６号组、津稻１１８７组、秋光组和吉玉粳组４个熟期组的生产试验。供试品种 (组合 )共计４９个 ,试验点次６２个。经过对试验资料的初步分析总结
In 1999, the rice variety trials in the northern rice region of China were conducted on the regional trial of five mature maturing groups of Yujing 6, Jinjiang 1187, Zhongdan 2, Qiguang and Jiyujing and Yujing 6 Group, Tianjin rice 1187 group, Qiu light group and Jiyujing group 4 ripening group production test. A total of 49 test varieties (combinations), 62 test points. After the preliminary analysis of the experimental data summary