双晚杂交稻要育出“苗高27～30厘米,叶片7～8张,叶挺茎基宽,根短粗又白,青秀无病虫,株株3～5蘖”的壮秧,在秧田管理上可概括为抓好“七防”,即:防草荒、防煮芽、防挤苗、防徒长、防病虫、防超龄、防难拔。 防琼荒　杂交晚稻育秧播量少,而两段秧采用单株寄插,因此营养面积大,往 Double late hybrid rice to be raised “seedling 27 to 30 cm, leaves 7 to 8, Ye Ting stem wide, stout white, green no pests, strains of 3 to 5 tillers,” the strong seedlings in Seedling management can be summarized as doing a good job, “seven defenses,” that is: anti-grass-roots, anti-boiled buds, anti-crowded seedlings, anti-lengthening, pest control, prevention of over age, anti-difficult to pull. Anti-Qiong shortage of hybrid rice seedling sowing less late, and two sections of the seedlings with a single plug, so the nutritional area, toward