Abstract: Super hybrid rice Yongyou 12 has the characteristics of the longest growth period, stouter stem, less heading per unit area , bigger panicle, more grain per panicle, etc. Compared to the conventional varieties, Yongyou 12 always has high yield and shows super high yield potential in practice. With the understanding of the variety’s characteristics, the fields with yield over 13.5 t/hm2 are increasing year by year. According to the experiences, super high-yielding cultivation techniques were formed to get the yield over 13.5 t/hm2: optimum sowing period, less seedling rate and cluster, more organic fertilizer, more ditches in field, more panicle fertilizer, controlling rice false smut, avoiding premature senility, avoiding premature water break and cut green.

Key words: super hybrid rice, Yongyou 12, super high-yielding, cultivation technique

摘要： 甬优12具有全生育期长，个体茎秆粗壮，群体苗穗较少，穗大粒多等特点，生产应用表现高产水平和超高产潜力。随着对其品种特征特性的了解，单产超13.5 t/hm2的高产攻关田和示范方逐年增多。根据各地高产攻关经验，总结形成了“一早二减三增四防”的甬优12单产13.5 t/hm2以上超高产栽培技术，即适期早播，减少播种量，减少种植丛数，增施有机肥，增开丰产沟，增施穗肥，防稻曲病，防止早衰，防断水过早，防割青。

关键词: 超级稻, 甬优12, 超高产, 栽培技术