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T优7889是福建农林大学与福建省种子总站合作,用优质不育系T78A与早恢89配制而成的杂交早稻新组合,1998年早季参加福建农林大学作物科学学院评比试验,产量 6.39t/hm2,居8个参试组合的首位,比对照威优77增产1.23%。1999年参加福建省早稻优质稻组测试,平均产量6.56t/hm2, 名列第一位,2000年提前参加福建省生产示范,在福州、厦门、莆田、泉州、漳州、龙岩、三明、南平、宁德9个示范点示范种植 2.0公顷,平均产量7.07t/hm2,比对照威优77增产10.24%,表现出丰产性好、抗性较强、米质优等特点,2001年2月通过福建省品种审定。2002年我市引进种植,对其特征特性和栽培技术进行研究。2004年～2005 年全市推广种植达2000hm2以上。
T you 7889 Fujian Agriculture and Forestry University and Fujian Province Seed Terminals, with high-quality male sterile line T78A and Early Recovery 89 prepared from a new early hybrid rice combinations, early in 1998 to participate in Fujian Agriculture and Forestry University College of Crop Sciences test, yield 6.39t / hm2, occupying the first place of 8 combinations, yielding 1.23% more than that of Weiyou 77. In 1999, he participated in the testing of high-quality early rice paddy in Fujian Province with the average output of 6.56t / hm2, ranking No.1 in advance. In 2000, he participated in the production demonstration in Fujian Province in advance. In Fuzhou, Xiamen, Putian, Quanzhou, Zhangzhou, Longyan, Sanming, Ningde 9 demonstrative demonstration planting 2.0 hectares, the average yield 7.07t / hm2, compared with the control Weiyou 77 yield 10.24%, showing good yield, strong resistance, excellent quality rice, in February 2001 through the Fujian Province varieties Validation. In 2002, the city introduced the cultivation of its characteristics and cultivation techniques. 2004 ~ 2005 the city to promote planting more than 2000hm2.