马铃薯病毒病是造成产量大幅度下降,影响增产的主要因素之一。脱毒种薯的研究与推广是减轻病毒病危害,提高产量的重要途径。但利用常规种薯种植时,亩用种量大(100～200公斤)、繁殖系数低(只有10～15),调种运输量大且种植面积小。致使新品种和脱毒种薯在生产上推广速度慢,应用难度大。为了解决上述问题,近几年国内外一些科研单位正在研究利用脱毒苗在三角瓶 Potato virus disease is caused by a substantial decline in production, affecting the yield increase of one of the main factors. Research and popularization of virus-free seed potato is an important way to reduce the harm of virus disease and increase the yield. However, the use of conventional seed potato planting, acres with large amount of seed (100 ~ 200 kg), breeding coefficient is low (only 10 to 15), transportation and planting a large amount of planted area. Resulting in new varieties and virus-free seed production in the promotion of slow, difficult to apply. In order to solve the above problems, in recent years, some domestic and foreign scientific research units are studying the use of virus-free seedlings in the triangle