“甘薯脱毒化”是当前国内一项重大技术改革,它不仅增产幅度大。而且经济效益高。实践经验证明:脱毒甘薯增产幅度的大小取决于网点;一是脱毒是否彻底。脱毒不干净,增产作用不大;二是脱毒甘薯苗在繁种过程中的再侵染,侵染程度越大其增产作用越小。因此繁育脱毒甘薯时,除了把好甘薯苗脱毒质量这一关外, “Detoxification of sweet potato” is a major technical reform in the country at present. It not only increases the output by a large margin. And high economic efficiency. Practical experience shows that: the rate of virus-free sweet potato production depends on the size of the network; First, whether the virus completely. Detoxification is not clean, the effect of increasing production is not; Second, the virus-free sweet potato seedlings in the breeding process of re-infection, the greater the extent of infection, the less the role of stimulation. Therefore, when breeding sweet potato, in addition to good sweet potato seedling detoxify the quality of this off,