寒冬时节,许许多多危害农作物的病菌纷纷隐匿消遁,翌年再悄然无声地卷土重来。因此,弄清病菌的越冬场所,采取针对性的措施,抓好冬春防治,是减轻来年农作物病害的关键一环。一、越冬途径 1,蛰伏土壤土壤是某些病菌的安乐窝。如玉米黑粉病菌,它主要是以厚垣孢子在土壤中越冬,而且寿命可长达7年以上。垣孢子生性顽 In the winter, many pathogens that endanger crops have disappeared one after another, quietly quietly came back the following year. Therefore, to clarify the pathogen overwintering sites, to take targeted measures, do a good job in winter and spring prevention and control, is to reduce crop disease in the coming year a key link. First, the winter approach 1, dormant soil Soil is some fungus comfort zone. Such as corn powdery mildew, it is mainly chlamydospore wintering in the soil, and life expectancy up to 7 years. Eccentric spore stubborn