育苗期蔬菜病害的预防措施永城市植保植检站陈连玉曹杰龚正峰一、床土消毒：是为了预防苗期某些侵染性病害的发生和发展。目前使用的方法主要有四种：１、药土下铺上盖。所选农药有四类：（１）五代合剂（７０％五氯硝基苯与７０％代森锰锌１∶１混合）；（２）五福合剂（... Preventive measures of vegetable diseases in nursery period Yongcheng Plant Protection and Inspection Station Chen Liangyu Cao Jie Gong Zhengfeng First, bed soil disinfection: It is to prevent the occurrence and development of certain infectious diseases at seedling stage. Currently there are four main methods used: 1, covered under the soil medicine cover. There are four types of pesticides selected: (1) five generations of mixture (70% pentachloronitrobenzene and 70% mancozeb 1: 1 mixture);