甘薯黑痣病又称甘薯黑皮病,由于不科学的引种、连作和栽培措施不当等,引起该病较普遍地发生,以至严重影响了薯农的收益。甘薯黑痣病主要侵染块根皮层,发病初期薯块表皮形成淡褐色小斑点,然后逐渐扩大形成灰黑色和黑色不规则大病斑。虽然病斑不深入组织内部,但由于表皮病变部位不断扩大,甘薯外观品质降低,严重影响甘薯的商品价值。下面详细介绍甘薯黑痣病综合防治措施:一、选用无病种薯,培育无病壮苗,建立无病留种田二、栽培措施春薯可适当晚栽,能减轻黑痣病发生;注意排涝,减少土壤湿度;有条件的地方,可 Sweet potato black mole disease, also known as sweet potato disease, due to unscientific introduction, continuous cropping and improper cultivation practices, causing the disease to occur more generally, as well as seriously affected the profits of potato farmers. Sweet potato disease mainly invaded the root cortex, the early onset of tuberous skin to form small brown spots, and then gradually expanded to form gray-black and black irregular large lesions. Although the lesion is not deep into the internal organization, but due to the epidermal lesion continues to expand, reducing the appearance of sweet potato quality, seriously affecting the sweet potato commodity value. The following detailed introduction of integrated control of sweet potato disease: First, the selection of disease-free seed, nurturing disease-free seedlings, the establishment of disease-free farming Second, the cultivation measures can be appropriate late planting late spring can reduce the occurrence of black mole disease; , Reduce soil moisture; conditional areas may be