北方寒冷地区种植越冬菠菜常常早春不返青,大量死苗,本文仅就与种子相关的问题谈谈我们的粗浅看法。1 菠菜的种类及特性菠菜依其种子(果实)的外形分为有刺和无刺种两个类型。有刺种叶戟形或箭形,先端尖,一般称尖叶菠菜。尖叶菠菜叶片狭小而薄,叶面光滑,叶柄细长,种子有棱刺,果皮较厚, Winter cold spinach is planted in the northern part of the world often do not return to green early spring, a large number of dead seedlings, the paper only on the issues related to the seed to talk about our crude ideas. 1 types and characteristics of spinach spinach according to their seeds (fruit) shape is divided into barbed and non-barbed two types. Spikelike halberd-shaped or arrow-shaped, apex sharp, generally called pointed spinach. Spiky spinach leaves narrow and thin, smooth leaves, petiole slender, seeds with thorns, thick peel,