西部大开发，生态要先行；生态要改善，种苗要先行。林木种子和苗木是林业生产重要的生产资料，是林业生产的物质保障。随着江河源生态环境综合治理、天然林保护、退耕还林、三北防护林四期建设等林业重点工程的实施，造林规模逐年增加，种苗生产量供应不足，种苗质量不高和缺? Western development, ecological first; ecology should be improved, seedlings must be first. Forest seedlings and seedlings are important production materials for forestry production and are the material guarantee for forestry production. With the comprehensive management of the ecological environment of rivers and lakes, the implementation of key forestry projects such as natural forest protection, conversion of farmland to forests, and the construction of the Three North Shelterbelt, the scale of afforestation has been increasing year by year, the supply of seedling production is insufficient, and the quality of seedlings is not high and lacking.