两优6206是利用两系不育系丰6S与优质恢复系R206配组育成的籼型晚稻新品种，具有生长势强、生育期适中、抗性强、米质优、产量高等特点。2015年在江苏盐城黄海农场开展父母本同时机插制种技术研究，通过肥水管理，花期镜检和调整，父母本花期相遇和异交结实都较好，制种平均单产3.55 t/hm2。本文介绍了两优6206的亲本特征特性及机插制种关键技术。

Liangyou 6206 is a new indica late rice by crossing two-line male sterile line Feng 6S and high quality restorer line R206, which has the characteristics of strong growth potential, moderate growth period, strong resistance, high grain quality and high yield. The seed production techniques of mechanical transplanting was conducted at Yancheng Yellow Sea Farm in 2015. Through the management of fertilizer and water, florescence microscopy and adjustment, the flower encounter and outcrossing were better and the seed yield was 3.55 t/hm2. This paper introduced the parents characteristics of Liangyou 6206 and the key cultivation techniques of machine transplanting seed production.