大棚芹菜空心多因高温、高湿所引起。控制棚内温度,科学浇水,能够控制芹菜空心。 芹菜属于喜冷冻蔬菜,对于低温反应不敏感。因此,冬季大棚内的温度一般应保持在15℃～18℃,需要提早上市的,温度也不得超过20℃。 冬季大棚芹菜一般每间隔半个月左右浇1次水,浇水量不宜过大。收获前半个月,浇2次透水。 Greenhouse celery hollow mostly due to high temperature, high humidity caused. Control shed temperature, scientific watering, able to control celery hollow. Celery is like frozen vegetables, insensitive to low temperature reactions. Therefore, the winter temperature in the greenhouse should generally be maintained at 15 ℃ ~ 18 ℃, the need for early market, the temperature should not exceed 20 ℃. Greenhouse celery in winter generally every half a month or so poured 1 water, watering should not be too large. Half a month before harvest, poured 2 times permeable.