花卉病害的防治,应采取综合措施,并本着早防治的原则。一、选花圃地从预防着手,应选阳光充足、通风排水良好、灌溉方便、过去没有病虫害的地方作花圃。加强水肥管理,使植物健壮而增加免疫力,是减少病虫害的关键。二、土壤消毒(1)用火熏烧,用开水灌注消毒,还可用60~100℃的蒸汽消毒30分钟至1小时。(2)用0.5%的五氯硝基苯和0.8%的多菌灵消毒。(3)用 Prevention and treatment of flower diseases, should take comprehensive measures, and in line with the principle of early prevention and treatment. First, the election flower garden from the prevention, should choose sunny, good ventilation and drainage, irrigation convenience, in the past no place for pests and diseases for the garden. Strengthening water and fertilizer management, making plants robust and increasing immunity is the key to reducing pests and diseases. Second, the soil disinfection (1) smoked with fire, perfusion disinfection with water, but also with 60 ~ 100 ℃ steam sterilization for 30 minutes to 1 hour. (2) Disinfect with 0.5% Pentachlorobenzene and 0.8% Carbendazim. (3) use