香两优68是一个适合长江流域作早稻栽培的两系优质杂交早籼稻新组合。该组合生育期短,产量高,米质好,且易制种,制种产量高。但在制种过程中由于父本茎秆比较细,若管理不当或没有晒好田或“九二○”施用偏多,氮肥过重,或遇不良的天气条件,如阴雨 Xiangliangyou 68 is a new combination of two-line high-quality early indica hybrid rice suitable for early rice cultivation in the Yangtze River Basin. The combination of short growth period, high yield, good quality rice, and easy to seed, seed production. However, in the process of seed production due to the relatively thin parental stems, if not managed properly or not good field or “900” application of more nitrogen fertilizer overweight, or in adverse weather conditions, such as overcast