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兰优1972系南宁市沃德农作物研究所以自主选育的不育系兰A与优质恢复系R1972配组育成的优质晚籼弱感光组合。该组合杂种优势强,株叶型好,生育期适中,产量高,米质优,适宜在桂南稻作区作双季晚稻种植。文章介绍了兰优1972的选育经过、特征特性及栽培、制种技术。制种技术:注意确保父、母本种性;合理安排播差期,确保有效穗数;适时适量喷施“九二○”;及时除杂、收割,确保种子质量。
Lanyou 1972 Department of Nanning Ward Crop Research Independent breeding lines blue line A and high quality restorer line R1972 with a combination of high quality late indica weak photosensitive combination. The combination has the advantages of strong heterosis, good plant leaf type, moderate growth period, high yield and good quality of rice, and is suitable for planting double rice late rice in the paddy area of southern Guangxi. The paper introduced the breeding of Lanyou 1972, its characteristics, cultivation and seed production techniques. Seed production techniques: pay attention to ensure that the parent and the female sex; reasonable sowing period to ensure that the effective number of spikes; appropriate amount spray “nine two ○”; timely removal, harvest, to ensure the quality of seeds.