在北方七省、区马铃薯环腐病座谈会期间,与会代表分别介绍了该地区广大贫下中农和科技人员,在三大革命运动中与马铃薯环腐病作斗争的经验,现综合如下,供各地参考。一、建立无病留种田:这是防治马铃薯环腐病最重要的一环。主要方法是每年选马铃薯播种面积10—— During the symposium on potato ring disease in the seven provinces and autonomous regions in northern China, delegates introduced the experience of the vast majority of poor and middle-income peasants and scientific and technological personnel in the region in fighting the ring rot disease in the three major revolutionary movements, respectively, and are summarized as follows for reference . First, the establishment of disease-free stay farming: This is the most important part of the prevention and control of potato ring rot. The main method is to choose the annual potato sown area 10 -