使用杀菌剂及土壤熏蒸剂等杀生性处理,是防治松杉苗木立枯病沿用已久的方法。这种方法恶化了土壤的理化性质,破坏了土壤微生物的群体关系,导致了一系列不良的效果。病原菌和其他微生物区系,通常保持在一个稳定的生态平衡状态中。化学防治破坏 The use of fungicides and soil fumigants and other biocidal treatment, is the control of fir seedling blight has long been used. This method aggravates the physical and chemical properties of the soil and destroys the colony of the soil microorganisms, leading to a series of undesirable effects. Pathogens and other microbial flora usually remain in a stable ecological balance. Chemical prevention and destruction