马铃薯癌肿病生物防御试验初报龚兆胜赵正平马建文（云南农业大学昆明６５０２０１）１前言１８８８年在匈牙利首先发现了马铃薯癌肿病。此后在欧洲其它国家以及南非、印度、秘鲁、墨西哥、加拿大、美国陆续有了这方面的报道。到本世纪７０年代，在我国云南、贵州、四川三... Preliminary Report on Biological Defense of Potato Carcinoma Gong Zhaosheng, Zhao Zhengping, Ma Jianwen (Yunnan Agricultural University, Kunming 650201) 1 INTRODUCTION Potato disease was firstly discovered in Hungary in 1888. Since then, other countries in Europe as well as South Africa, India, Peru, Mexico, Canada, the United States have reported in this area. To the 70s of this century, in our country Yunnan, Guizhou, Sichuan three ...