良种壮苗,是绿化造林的物质基础,是保证造林质量的重要一环。各地应当根据“造什么林,育什么苗,采什么种”的原则,及早安排采种,坚决贯彻“自采种、自育苗、自造林”的三自方针。目前采种季节已到,做好采种工作、特别是薪炭林树种的采种工作具有重大意义。由于薪炭林资源 Strong seeds and strong seedlings are the material basis for green afforestation and are an important part of afforestation quality. All localities should, according to the principle of “building what kind of forest, cultivate what seedlings and take what kind of seed,” arrange the seed planting as early as possible, and resolutely implement the “three principles” of “self-harvesting, self-raising and self-afforestation”. At present, the planting season has arrived and it is of great significance to do a good job of seed collection, especially for seed collection of firewood and tree species. Due to firewood resources