甘薯种苗产地检疫规程 (GB 7413-2009) Quarantine protocol for propagating tubers and seedlings ofsweet potato in producing areas 代替GB 7413-1987 发布时间: 2009-04-27 实施时间: 2009-10-01 阅读数量: (104) 标准分类: B 农业、林业