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培育烟草壮苗是烟叶优质栽培的基础。壮苗的标准是:①根系发达,须根多,移栽后缓苗快。②茎粗而短,高1.5～2.0寸,节间紧凑,纵横生长协调。③颜色正绿。④适龄无病,苗龄50～60天,8～10片真叶。烟草育苗的苗床应选择地势平坦、背风向阳、排水良好、管理方便的生茬地,床长36尺,宽6尺,深1尺。钉好床框、挖好床体后,依次装入切碎的玉米秸或乱稻草等2～3寸(浇水踏实后厚度),新鲜马粪1～2寸,底土1寸,床粪2寸。装后的床面应高于地面2寸,以利保温排水。床粪须在播前15～25天开始发酵,以免生粪烧苗。少量磷肥或1～2％的饼肥与有机肥或土拌和均匀补施,可促进幼苗根系发育。
Nurturing tobacco seedling cultivation of tobacco is the basis of good quality. Strong seedling standards are: ① root developed, fibrous roots, Huanmiao fast after transplanting. ② stem coarse and short, high 1.5 to 2.0 inches, internals compact, vertical and horizontal growth coordination. ③ color is green. ④ Age-free disease-free, seedling age 50 to 60 days, 8 to 10 true leaves. Tobacco seedling seedbed selection should be flat, leeward sunny, well drained, easy management of stubble, bed length 36 feet, 6 feet wide, deep 1 foot. Nail well bed frame, dig a good bed, followed by the chopped corn stalks or chaff straw 2 to 3 inches (watering practical thickness), fresh horse manure 1 to 2 inches, the bottom soil 1 inch, bed excrement 2 inches . After loading the bed should be higher than the ground 2 inches, to facilitate thermal insulation. Bed excrement must be 15 to 25 days before sowing to start fermentation, lest excrement burn seedlings. A small amount of phosphate fertilizer or 1-2% of cake fertilizer and organic fertilizer or soil mixing and replenishment, can promote seedling root development.