天优3550是广西科泰种业有限公司以天A作母本,R3550作父本杂交选育而成的感光型三系杂交水稻新品种,2005年通过广西农作物品种审定委员会审定,2006年通过了国家农作物品种审定委员会审定。2005年本市引进试种,表现出高产、抗稻瘟病、抗白叶枯病、耐肥、抗倒伏,品质好、适应性广 Tianyou 3550 is a new type of sensitive three-line hybrid rice selected by Guangxi Ketai Seed Industry Co., Ltd., using the day A as the female parent and R3550 as the male parent. It was approved by Guangxi Crop Variety Approval Committee in 2005 and passed in 2006 The National Crop Variety Approval Committee validation. In 2005, this Municipality introduced trial planting and showed high yield, resistance to rice blast, bacterial leaf blight, resistance to fertilizer, lodging resistance, good quality and wide adaptability