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在包头地区,春定植于3月中旬播种,秋定植于5月中旬播种。在大棚内播种,先施足底肥,整地作畦,一般畦的大小为7.5m~2。在播种前打足底水。播种前浸泡洋葱种子12h并催芽,根据发芽率播种7～10g/m~2。播完后上盖0.5cm的细沙土,补浇一次水,为了减少水分蒸
In Baotou, spring planting was sown in mid-March and autumn planting was sown in mid-May. Sowing in the greenhouse, the first application of plantation fat, soil preparation for 畦, the general size of 畦 7.5m ~ 2. Play plantar water before sowing. Soak the onion seeds for 12h and germinate before sowing and sowing 7 ~ 10g / m ~ 2 according to the germination rate. After sowing the cover of 0.5cm fine sand, make up a water, in order to reduce the steaming