马鈐薯环腐病是我国的对外植物检疫对象,在世界多数国家马鈐薯产区普遍存在,如法国、瑞士、瑞典、美国、苏联、日本等均有发生。我国过去还没有报告,但近年来据了解黑龙江、吉林、辽宁、河北张家口、北京等的某些地区均有类似环腐病症状的块茎发 Horse potato ring rot disease is China’s foreign plant quarantine object, common in most countries in the world potato production areas, such as France, Switzerland, Sweden, the United States, the Soviet Union, Japan and so have occurred. In the past, our country has not reported yet, but in recent years, it is known that tuberous hair with symptoms of ring rot are present in some areas in Heilongjiang, Jilin, Liaoning, Zhangjiakou, Hebei, etc.