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日光温室具有空间温度高低差异大,湿度大,变化剧烈,光照不足等问题,因此,十分有利于病害的发生、发展。根据我地菜农实践,日光温室蔬菜病害的防治只要抓住关键,立足于防,就会取得事半功倍之效。现将几种有效的预防措旌介绍如下。(1)温室土壤清毒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200公斤,堆闷24小时后均匀撒旌,翻入土中。随后闭室3—4天,中午室温可达50℃以上,这样能基本杀死土壤中的病原物,有效地控制传病害。(2)苗期病害的预防主要采取种子处理、苗床消毒、播种时药土垫盖等措施,其目的在于杀死种子及苗床土中的病原物,对苗期猝倒病、立枯病、炭疽病等防治效果在95%以上,对土传、种传的枯萎病等也有一
Solar greenhouse has a large space temperature difference, humidity, dramatic changes, lack of light and other issues, therefore, is very conducive to disease occurrence and development. According to my practice of vegetable farmers, as long as the control of greenhouse vegetable diseases in greenhouse to seize the key, based on prevention, we will achieve a multiplier effect. Several effective preventive measures are introduced below. (1) Greenhouse soil detoxification Built for many years in greenhouse because of continuous cropping, soil contamination is more serious. Therefore, soil treatment can not be ignored. After the sunlight greenhouse buckle membrane, with 25% per mu with more than 3 kg of ginseng 200 kg dry mix fine soil, pile stuffy 24 hours evenly sprinkle Jing, turned into the soil. Subsequent closed 3-4 days, noon room temperature up to 50 ℃ above, so that can basically kill the pathogen in the soil, effectively control disease transmission. (2) Prevention of seedling diseases mainly take measures such as seed treatment, seedbed disinfection, soil coverings and other measures when sowing, the purpose is to kill the seeds and seedlings of soil pathogens, damping-off seedlings, blight, Anthracnose and other prevention and control of more than 95% of the soil, seed transmission Fusarium also have one