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1、温度播种后至出苗期间,棚内温度一般在15—20℃,但最高不超过30℃。待70%出苗后要适当降低苗棚内温度,以10—15℃为宜。通风降温要在早晨8—9点钟进行,最初在背风面,把薄膜掀开一个小缝,小拱棚可在棚顶扒开一条缝,使棚内温度随气流的流动而降低。千方不要在迎风面掀膜通风,以免“闪着”幼苗。真叶期外界气温增高,要适当加大通风量。无风天气,视外界气温掀膜炼苗、下午3—4点仍要盖好薄膜。移栽前5—7天可去膜进行露地管理,但要注意夜间霜冻。 2、湿度育苗播种时,要浇透
1, temperature After sowing to seedling emergence, greenhouse temperature is generally 15-20 ℃, but the maximum does not exceed 30 ℃. 70% after emergence should be appropriate to reduce the temperature inside the seedling shed to 10-15 ℃ is appropriate. Ventilation and cooling should be carried out at 8-9 o’clock in the morning. At the beginning, on the leeward side, the film is opened with a small slit. A small shed can open a slit on the roof to reduce the temperature in the shed as the airflow flows. Thousands do not ventilate the windward membrane, so as not to “flash” seedlings. True leaf outside temperature increases, it is necessary to increase ventilation. Windy weather, depending on the temperature of the outer membrane tempered membrane, 3-4 o’clock still have to cover the film. 5-7 days before transplanting can go to the membrane for open field management, but pay attention to night frost. 2, humidity seedling planting, to dredging