分苗是培育蔬菜壮苗的有效措施，尤其是保护地栽培的蔬菜。其主要技术是：一、适宜范围不同蔬菜种类的耐移植程度有很大差别，一般可分为三类。（一）耐移植蔬菜：茄果类、白菜类、甘蓝类、香椿等。（二）移植稍有困难的蔬菜：黄瓜、西瓜等瓜类和豆类；（三）不耐移植蔬菜：根? Sub-seedling is to cultivate strong seedlings of vegetables effective measures, especially in protected areas of cultivated vegetables. The main technique is: First, the appropriate range of different types of vegetables resistant to transplantation have great differences, can be divided into three categories. (A) resistant vegetables: solanaceous, cabbage, cabbage, toon and so on. (B) the porting of vegetables is somewhat difficult: cucumber, watermelon and other melons and beans; (C) impatience transplant vegetables: root?