论文部分内容阅读
据调查,2013年入冬以来,开封县县域内出现了持续多日的灾害性雾霾天气,低温、寡照、高湿,对日光温室蔬菜生产非常不利,棚室内光照严重不足、温度偏低,部分日光温室白天温室内最高气温下降到15℃以下,最低气温下降到1℃~3℃,设施蔬菜生长迟
According to the survey, since the beginning of winter in 2013, the haze and haze weather in Kaifeng County has lasted for many days. Low temperature, low light and high humidity are very unfavorable to the vegetable production in solar greenhouse, and the light in the greenhouse is not enough and the temperature is low. Part of the solar greenhouse during the day the maximum temperature dropped to below 15 ℃, the minimum temperature dropped to 1 ℃ ~ 3 ℃, late vegetable growth facilities