阴天是日光温室生产的不利因素之首。阴天管理的好坏,直接影响温室的效益与成败。我根据多年的实践,总结出阴天日光温室黄瓜栽培的“八不”经验。 1.不播种 黄瓜播种至出苗要求30～35℃的气温,地温23℃以上,才利于出苗。如果阴天播种,地温低,出苗弱;若遇上连阴天、长时间低温,黄瓜胚根不下扎且变短变粗,根发锈等异常现象,即使出土也是弱苗。 Cloudy day is the first disadvantage of solar greenhouse production. Cloudy management is good or bad, directly affect the greenhouse benefits and success or failure. According to many years of practice, I summed up the cloudy day greenhouse cucumber cultivation “eight not” experience. 1. Not sowing cucumber seedlings to the emergence of the temperature requirements of 30 ~ 35 ℃, ground temperature above 23 ℃, it will help sprout. If the cloudy seeding, low ground temperature, weak emergence; in case of cloudy, prolonged cold, cucumber radicle and less short and thick, root rust and other anomalies, even if the unearthed is weak seedlings.