The swamps in the northeast region are widely distributed, and they are mostly located on the banks of the Xiaoxing'anling Mountains, the Wanda Mountains, the mountain valleys of the Changbai Mountains, and the flat rivers. In addition, there are sporadic distributions in the mountains and in the mountains. The reforestation of these small areas of swampland is not only connected to the forest land but also increases the forest coverage rate. The characteristics of these swamps are: convenient transportation, convenient management and development and utilization. In the northeast region since 1956, tens of thousands of hectares of sporadic swamps have been rebuilt and planted forests have been built. First, the marshland drainage Because of marshland surface water and excessive water in the soil, before the afforestation must rule out surface water, lower groundwater level, increase soil aeration, increase soil temperature, accelerate peat decomposition, to reform the soil, increase fertility purpose. The drainage method can be divided into two types: local drainage (that is, the use of an artificial high platform for soil preparation, discharge of stagnant water into the soil extraction hole on the side of a high platform), and drainage of the system (that is, digging large ridges with manpower and drains with furrows). Second, the afforestation in the swamp afforestation site preparation land can be manpower and mechanical land preparation. The manpower preparation site can use buckwheat ground preparation, high-street preparation and digging ridge preparation. Mechanized land preparation can be used for large area land preparation and large ridge land preparation. III. Afforestation in Everglades 1. Afforestation tree species and seedling age. Xiaoxing'anling is dominated by Larix gmelinii and Pinus sylvestris var. Mongolica. The general seedling age is 2 years old, and 1 year old Xingan Larch may be used. The Daxing'anling is dominated by Larix gmelinii and Populus nigra, and the planted Larch is 2 years old. Seedlings; Larix gmelinii and Larix olgensis are the main species in Changbai Mountain, and the general seedling age is 2 years old. 2. Afforestation methods and density. Different afforestation methods and afforestation densities are used according to different land preparation methods. One buckwheat hides and one small high-slump preparation site; one Taiwan square high-street preparation site generally adopts the vegetative group afforestation, each of three plants, the product character shape planting; each if 4 plants, the use of square planting; each 5 plants Star-shaped planting. The table top is 2 square meters high, with 10 plants per plant, arranged in two rows. For ridge cultivation, one row per ridge was planted, and the plant spacing was mostly 1 meter. 3. Tending. The afforestation in the swamp must generally be reared for 3 years in a row. The afforestation must first be carried out in a positive and practical manner. This tending is the key to ensuring survival. In the middle of June, the second correcting and practising was carried out and the weeds were cut. The second year of tending is the same as general afforestation. In short, as long as the wetlands take appropriate measures to carry out drainage reforms, land preparation for local conditions and timely tending after afforestation, the growth of trees is equivalent to general afforestation.