栽培越冬菠菜的目的,是为了早春菠菜早返青、早生长,提早供应市场,同时能抢出半茬菜,空出地来还可以定植夏菜。近年来,由于大棚栽培的发展,也是大棚生产一个主要搭配品种。但在生产中,存在着越冬菠菜早春返青成活率很低、大量死亡、以至严重缺苗减产的问题。越冬菠菜死亡的主要原因是:1.播种时间过早或过晚。越冬老根菠菜,应在8日中旬至9月上旬,即在立秋之后至白露之前播种。播种过早,苗子大。播种过 The purpose of growing winter spinach is to spinach early spring early green, early growth, early supply market, while semi-stubble can be stolen out of space to planted summer vegetables. In recent years, due to the development of greenhouse cultivation, but also a major greenhouse production with varieties. However, in production, there is a problem that the survival rate of early wintering spinach of wintering spinach is very low, a large number of deaths occur, and serious shortage of seedlings is reduced. The main reasons for the death of winter spinach are: 1. Sowing time too early or too late. Overwintering root spinach, should be in mid-8 to early September, that is, after the beginning of autumn to white dew before planting. Sowing too early, big seedlings. Sowed