马铃薯粉痂病是检疫病害,不病则已,一病难治,严重者不仅可减产50%以上,而且直接使病薯失去商品性,降低商品价值。认识和掌握马铃薯粉痴病,对提高马铃薯的产量,减少损失,增加经济效益有着重大意义。发病原因:引发马铃薯粉痂病的病原为鞭毛菌亚门真菌粉痂菌,粉痂病“疤斑”破裂散出的褐色粉状物为病菌的休眠孢子囊球(图1),即由许多近球形的黄色至黄绿色的休眠孢子 Potato powder scab disease is a quarantine disease, disease is already, a disease refractory, severe cases can not only reduce the yield of more than 50%, but also directly to the loss of commercial potato, reducing the value of the commodity. It is of great significance to know and master the disease of potato powder to improve the yield of potato, reduce the loss and increase the economic benefit. The cause of the disease: the pathogen that caused the potato powder scab disease is Flammulina subfamily fungus powderyca sclerotiorum, powdery scab disease “scar spot ” brown powder scattered rupture spores vesicles (Figure 1), namely By many near-spherical yellow to yellow-green dormant spores