解放几年来,在防治黑斑病方面已创造出温汤浸种、高剪苗等办法,在生产上起了很大作用,但是这些办法是依靠培育无病秧苗、建立留种田,获得无病种薯的办法来防治的;而甘薯黑斑病菌的传染并不是单靠秧苗和种薯,还兼有土壤和肥料等的传染,有些表现为三者并重,有些地方表现为秧苗和种薯严重,有些地方则表现为土壤和肥料的传染严重。所有这些 In the past few years since the liberation, the measures such as soaking hot seeds and high-shearing seedlings have been created in the control of black spot and have played a significant role in the production. However, these measures rely on the cultivation of disease-free seedlings, the establishment of stay-farming and the acquisition of disease-free seed tubers Of the way to control; and sweet potato Alternaria infection is not alone seedlings and seed, but also both soil and fertilizer and other infections, some of the performance of the three equally, in some places showed serious seedlings and seed, and some The local manifestations of soil and fertilizer infection is serious. all of these