林木种苗是造林绿化的物质基础，其质量的优与劣，关系着造林绿化效果的成与败。保证和提高种苗的质量就能提高造林绿化的效率，就能建设优质高效林业。国家林业局已确定全面提高种苗质量是“十五”期间种苗工作的中心。要提高种苗质量，除了对种苗自身的内在质量（遗传品质） Tree seedlings are the material basis for afforestation, the quality of its excellent and poor, the relationship between afforestation and greening success or failure. To ensure and improve the quality of seedlings can increase the efficiency of afforestation, you can build high quality and efficient forestry. The State Forestry Administration has determined that the overall improvement of seedling quality is the center of seedling work during the “Tenth Five-year Plan” period. To improve the quality of seedlings, in addition to the inherent quality of the seedlings (genetic quality)