健壮的幼苗是蔬菜生产中获得高产、优质和早熟的基本条件。当前,各地露地蔬菜生产中普遍存在着苗弱、大小不齐、苗龄长短不一的现象。造成这种情况的原因主要是育苗设备不力,技术条件不佳。为了改变这种状况,有的省市采用了工厂化育苗。各地实验证明,效果良好、具体表现为:(1)幼苗生长快,比传统方法可缩短育苗期 Robust seedlings are the basic conditions for high yield, good quality and precociousness in vegetable production. At present, there are common occurrences of seedling weakness, irregular size and seedling age in different parts of open-field vegetable production. The main reason for this is the lack of nursery equipment, poor technical conditions. In order to change this situation, some provinces and cities have adopted industrialized nursery. Experiments show that the effect is good, the concrete manifestation is as follows: (1) The seedling grows fast, can shorten the nurturing period than the traditional method