近几年来,银川市郊区蔬菜生产,由于苗期受猝倒病的危害,苗床出现严重环状死苗,往往不得不重新育苗,影响适时移栽,延长了蔬菜上市时间,也影响集体收入。据调查,造成猝倒病为害的原因,除苗床地连年使用和管理不善,形成低温多湿环境外,苗床播前不进行土壤消毒是导致该病严重发生的重要原因。我们做了多次土壤消毒试验,其中五氯硝基苯的效果较好。 1976～1977年,我们连续两年在茄子、辣椒苗床,用五氯硝基苯一份加代森锌一份(简称五代合剂),进行土壤消毒、预防猝倒病的试验,获得较好结果(如下表)。 In recent years, vegetable production in the suburbs of Yinchuan, due to the damping-off disease at seedling stage, severely ring seedlings dead seedlings often have to re-breeding, affecting timely transplanting, extending the time to market vegetables, but also affect the collective income. According to the survey, the cause of the cataplexy catastrophe is the main reason for the severe disease of the disease except that the seedbed is used year after year and mismanaged to form a low temperature and humid environment. We did a lot of soil disinfection tests, of which the effect of pentachloronitrobenzene is better. From 1976 to 1977, we experimented with soil disinfection and damping-off disease prevention in eggplant and peppers seedbed for one year in succession, using a mixture of chloronitrobenzene and dexamethasone, The following table).