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菠菜生育过程可分为两个时期。营养生长期为从子叶出土到花序分化。种子发芽始温4℃,适温15～20℃,温度过高发芽率降低,发芽时间加长。日平均气温在23℃以下时,苗端分化叶原基的速度随温度的下降而减慢,叶片在日平均气温为20～25℃时增长最快。生殖生长期为从花序分化到种子成熟,菠菜是典型的长日照作物,花序分化到抽薹的天数,因播期不同而有很大差异,短者8～9天,长者140多天。这一时期的长短关系
Spinach fertility process can be divided into two periods. Vegetative growth period from cotyledon unearthed to inflorescence differentiation. Seed germination at the beginning of temperature 4 ℃, suitable temperature 15 ~ 20 ℃, the temperature is too high germination rate decreased germination time longer. When the average daily temperature was below 23 ℃, the rate of leaf primordium at the shoot tip decreased with the decrease of temperature, and the leaf temperature increased fastest when the average daily temperature was 20 ~ 25 ℃. Reproductive growth stage from inflorescence to seed maturity, spinach is a typical long-day crops, inflorescence differentiation to bolting days, due to different sowing dates are very different, a short period of 8 to 9 days, the elderly more than 140 days. The relationship between the length of this period