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我省洋葱育苗有秋季和春季两种,以秋季育苗为主。 (一)秋季育苗 1.播种:不宜过早。过早,葱苗过大,第二年春天定植后,容易发生未熟抽苔现象,影响品质和产量。播种过晚,苗小细弱,定植后影响成活率,生长不良。无霜期较长的锦州、旅大,可在白露前4～6天播种;鞍山、沈阳,宜在处署前后1～2天播种。衡量播种期是否适宜,以幼苗停止生长以前(越冬以前),植株高度5～6寸,苗的基部直径1.5～2分粗为宜。播种的地块,要避免前茬栽种过葱蒜类蔬菜。播种量的多少与幼苗的壮弱和来年抽苔有关。播种量
There are two kinds of autumn and spring onion growing in our province, mainly in autumn. (A) autumn seedlings 1. Sowing: not too early. Too early, green onion is too large, the second year after planting in spring, it is easy to occur immature bolting phenomenon, affecting quality and yield. Sowing too late, small and delicate seedlings, colonization affect the survival rate, poor growth. The frost-free period of Jinzhou, Luda, white dew 4 to 6 days before sowing; Anshan, Shenyang, should be deployed 1-2 days before and after planting. To measure the sowing period is appropriate, before the seedlings stop growing (before winter), the plant height of 5 to 6 inches, seedling base diameter of 1.5 to 2 points rough appropriate. Sown plots, to avoid the previous crop planted onion and garlic vegetables. The amount of seeding and seedling weakness and the coming year bolting. Sowing volume