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日光温室所形成的小气候特点是空间温差大,变化剧烈,湿度大,光照不足等,十分有利于病害的发生、发展。现将几种有效的预防措施简介如下:一、温室土壤消毒土壤带菌是日光温室蔬菜病害的主要初侵染来源。建成多年的日光温室因连作,土壤带菌更为严重,因此,土壤处理不可忽视。日光温室扣膜后,每亩用25%多菌灵3—4公斤拌干细土100公斤堆闷24小时,均匀撒施,翻入土中,随后闭室3～5天,中午室温可达50℃以上,这样能基本杀死土壤中的病原物,有效地控制土传病害。
The microclimate formed by sunlight greenhouse is characterized by large space temperature difference, dramatic changes, high humidity and insufficient light, which are very conducive to the occurrence and development of diseases. Now several effective preventive measures are as follows: First, the greenhouse soil disinfection Soil contamination is the main source of initial green light greenhouse vegetable diseases. Built for many years because of the continuous operation of the greenhouse, soil contamination is more serious, therefore, soil treatment can not be ignored. After the sunlight greenhouse buckle membrane, mu with 25% carbendazim 3-4 kg mixed dry fine soil 100 kg pile stuffy 24 hours, spread evenly, turn into the soil, then closed for 3 to 5 days, noon room temperature up to 50 ℃ above, so that can basically kill the pathogen in the soil, effectively control soil-borne diseases.