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近几年,冬季连阴雨雪天气较多,光照不足,地温下降,对日光温室蔬菜生产影响比较大。针对这种灾害性天气,为了减轻灾害的影响,提出以下技术对策。 一、灾害性天气要补光保温防冷。 1、充分利用阴天的散射光。连阴天气,只要揭苫后气温不明显下降,都要适时揭苫见光,干冷的天气也要在中午前后揭苫见光。要尽可能早揭草苫,适当晚盖,多接受散射光。 2、采用地膜覆盖与膜下滴灌浇水,可以有效地降低室内的空气湿度。对减轻病害发生有明显作用。 3、在温室内挂灯泡,设置地热线;每隔10米,挂一个100个瓦的灯泡,白天亮晚上灭,下午盖草苫时熄灯。在棚内设置地热线,以提高地温。
In recent years, the winter even more rainy and snowy weather, lack of sunlight, ground temperature decreased, the greenhouse effect on the production of vegetables is relatively large. In response to this disastrous weather, in order to reduce the impact of disasters, the following technical countermeasures are proposed. First, the disaster weather to fill light insulation cold. 1, make full use of the cloudy light scattering. Even with the cloudy weather, as long as the temperature is not significantly decreased after the revelation, we must timely expose the light, dry and cold weather have to be exposed around noon. To expose the grass as early as possible, appropriate late cover, and more to accept scattered light. 2, the use of plastic film mulching and drip irrigation, can effectively reduce indoor air humidity. To reduce the occurrence of diseases have a significant role. 3, hanging light bulbs in the greenhouse, set the hotline; every 10 meters, hanging a 100 watt light bulb, bright light during the day and night off, cover the grass when the lights off. Set hotline in the shed to increase the ground temperature.