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大棚内的温度、湿度与光照条件,直接关系到蔬菜的生长发育。科学合理地调节大棚内的温度、湿度与光照条件,使大棚内形成有利于蔬菜生长发育的小环境,是夺取大棚蔬菜早熟、优质、丰产、高效益的重要环节。一、温度条件的调节大棚蔬菜栽培主要以冬、春两季为主,温度条件是促进蔬菜生长发育的动力。大棚内的温度变化规律是:昼夜温差比露地大,晴天温差大于阴天,且棚温回升快,阴天棚内增温效果不明显。根据大棚内的温度变化规律,可采取以下的温度调节措施:
Greenhouse temperature, humidity and light conditions, directly related to the growth of vegetables. Scientifically and reasonably regulating the temperature, humidity and light conditions in the greenhouse to form a small environment conducive to the growth and development of vegetables in the greenhouse is an important part of seizing greenhouse vegetables with precocity, high quality, high yield and high efficiency. First, the regulation of temperature conditions Greenhouse vegetable cultivation mainly in winter and spring seasons, temperature conditions are to promote the growth and development of vegetables. The law of temperature variation in the greenhouse is: the temperature difference between day and night is larger than that of the open field, the temperature difference between the sunny day and the cloudy day is larger than that of the cloudy day, and the shed temperature rises quickly. According to the temperature changes in the greenhouse law, can take the following temperature control measures: