一、品种选择适于早春栽培的结球生菜主要有北京团叶生菜、广州结球生菜、凯撒、太湖６５９等。二、培育壮苗山东各地早春露地栽培一般于２月中下旬播种育苗较适宜。一般每６６７米２用种量２５～３０克，床土要配成营养土，比例为：未种过蔬菜的熟土或葱蒜茬园土２份、腐熟有 First, the choice of varieties Suitable for early spring cultivation of lettuce main lettuce Beijing Mission Leaves, Guangzhou, the ball roast lettuce, Caesar, Taihu 659 and so on. Second, to cultivate strong seedlings Shandong early spring open field cultivation generally in mid-late February sow seedlings more appropriate. In general, the amount of 25 ~ 30 grams per 667 m 2, bed soil should be allocated to nutrition soil, the ratio is: not planted vegetables or onion onion stubble garden soil 2, maturity