Method for improving afforestation quality of Alnus formosana

The invention discloses a method for improving the afforestation quality of Alnus formosana. The method includes the steps of: bud seedling cultivation, seedling cultivation in light substrate containers, forest land clearing and land preparation, seedling planting for afforestation, seedling checking and complementary planting and young forest cultivation, wherein two-stage seedling cultivation is adopted, roots of bud seedlings are trimmed before transplanting is conducted, and seedling cultivation by using the light substrate containers and root pruning by air are adopted, so that growth ofmain roots is inhibited, multi-level lateral roots are promoted to grow so as to form a large number of root balls, and the stress resistance is strong; when the seedlings grow to a height of 15-20 cm, the seedlings can be taken out from the containers and used for afforestation, the period of seedling cultivation is shortened, the production cost is saved, the production efficiency is improved,and large-scale, specializ