1. The suitable planting time is from March to mid-April, after the soil is thawed and before the new buds germinate. Early planting is easy to survive and has deep roots. Land selection should be considered according to the specific requirements of walnut growth and development on the environment. It is best to choose sunny flat land and gentle sloping land for the garden site, and sandy loam is suitable for the soil. It is required that the soil layer is above 1 meter, and the groundwater level is below 2 meters from the surface. Planting areas should be smooth and mature to prevent alkali waterlogging. In mountainous areas, the fish scale pit can be repaired first, and then the tree tray can be gradually expanded. Before planting, you must dig a big pit and apply sufficient base fertilizer. The correct method of digging a pit is: dig a pit 80 ~ 100 cm square, separate the topsoil from the subsoil, and put a cart (50 ~ 100 kg) for each tree. When backfilling the tree pit, first fill in the mixed soil of surface soil and bottom fertilizer, then fill in the bottom soil, which is practical while filling, and wait for planting after full watering. 2. Choose pure and excellent varieties when planting finished seedlings. At present, the most outstanding ones are White Lion's Head, Lion's Head at the Bottom of the Nest and Big Official's Hat. Planted seedlings should have developed taproots, complete lateral roots, no pests and diseases, many fibrous roots, strong branching and easy formation of flower buds. If it is a seedling, it must be grafted in the same year, so that the survival rate after grafting is high and there is no bleeding.