新的塑料暖房管理方法改变了晚闭窗晚开窗的传统管理方法,使病害大大减轻或根除。因此,这个新方法正在受到日本农民的欢迎,已被有关部门采纳,作为塑料暖房的重点推广技术。新的管理方法是早闭窗早开窗,因为傍晚早点关闭换气窗,可保持暖房内温、湿度都高(达到浓雾状亦可),而早晨虽稍冷,当太阳光射进暖房时打开换气窗进行换气,可使湿度下降,温度缓缓上升,恶化了发病条件,因而大大减少病害,而且还有其它优点。一、早晨早换气降低湿度才能防病 1.在引起植物发病的诸条件中,温度和湿度是主要的。关键是植物体的温度与露点温度之差,也 The new plastic greenhouse management method has changed the traditional method of late management of late closed windows and windows, so that the disease greatly reduced or eradicated. Therefore, this new method is being welcomed by Japanese farmers and has been adopted by relevant departments as a key promotion technology for plastic greenhouse. The new management method is to open the windows early in the morning and close the windows, because the early in the evening to close the ventilation window, can keep the warm room temperature, humidity are high (to dense fog can be), while the morning though slightly cold, when the sun shines into the greenhouse When you open the ventilation window for ventilation, can make the humidity drop, the temperature rises slowly, exacerbating the disease conditions, thus greatly reducing the disease, but also has other advantages. First, ventilation early in the morning to reduce humidity in order to prevent disease 1 in the conditions causing plant disease, temperature and humidity is the main. The key is the difference between the temperature of the plant body and the dew point temperature, too