1.检验定级标准和检验程序(1)检验定级标准脱毒种薯的检验定级工作是做好保种留种的关键,如果检验定级这一关把不严,脱毒种薯的质量就不会有保证。根据目前的技术和生产水平,参照国内有关规定,学习兄弟单位的先进经验,采纳同行专家的意见。①在主要生产基地,以种薯退化程度来定级别。制定了马铃薯脱毒种薯质量检验定级标准和鉴定 1. Inspection and grading standards and testing procedures (1) Test Grading standards Virus grading inspection and grading is the key to maintaining seed species, if the test grading the level of lax, virus-free seed The quality will not be guaranteed. According to the current level of technology and production, with reference to the relevant provisions of the country, learn advanced experience of fraternal units and adopt the opinions of peer experts. ① In the main production base, the degree of degradation of seed to level. Developed potato virus-free seed quality test grading standards and identification