籼粳杂交稻甬优12具有株型优良、穗大粒多、结实率高、高产稳产、优质多抗等特点。2013-2016年在浙江省江山市进行百亩方攻关试验，2016年创造了单产14.56 t/hm2的浙江省单季稻攻关田历史最高纪录。本文介绍了甬优12的特征特性，并详细阐述了甬优12百亩攻关方单产达13.50 t/hm2的高产栽培技术。

Yongyou 12 is an indica-japonica hybrid rice, it has the characteristics of ideal plant type, large panicle and more grains, high seed setting rate, high and stable yield, good grain quality and multiple resistance, and made a new record with an average yield of 14.56 t/hm2 in a larger area of 7.8 hm2 in 2016 in Jiangshan city, Zhejiang province. In this paper, the characteristics and the high yield cultivation techniques of Yongyou 12 were introduced.