Construction of Environmental conditions for Scientific transplanting of Walnut seedlings

   walnut has a strong root system. In order to meet the needs of walnut growth and development, the soil should be prepared in advance before walnut orchard establishment and planting, regardless of mountain, slope, sand or saline-alkali land. Soil preparation mainly includes the leveling of land, the construction of terraces and the construction of soil and water conservation projects, on the basis of which fixed-point excavation, deep maturation and improvement of soil, and increase of organic matter should be carried out. On the basis of leveling the land, building terraces and building soil and water conservation projects, the planting points of walnuts were measured according to the predetermined planting design, and planting holes were dug according to the points.

   planting holes or ditches should be dug in the autumn of the year before planting, so that the heart soil has a certain ripening time. The depth and diameter of the planting hole are 0. 8 million meters, dense planting walnut orchard can dig planting ditch, ditch depth and width of 0.8 million meters. No matter hole planting or furrow planting, the topsoil should be stacked separately from the heart soil. When planting in sandy land, an appropriate amount of clay should be mixed to improve soil structure, or mature straw should be mixed with sandy soil. If we want to build a garden in the hills and mountains or sandy beaches with very thin soil layer, we should use guest soil and increase the application of organic fertilizer to improve the soil. Planting holes should be increased, and the methods of guest soil, mixing sand, applying organic fertilizer, filling turf soil or topsoil should be used to improve soil texture so as to create good conditions for root growth and development. Practice has proved that the method of "runoff operation" should be adopted for land preparation on gentle slope, which requires that the runoff production surface should be well adjusted, smooth and solid, and that the catchment pit (planting pit) should be 1 meter square, and all the ripe soil and weeds on the runoff surface should be filled with organic matter in the pit. Runoff soil preparation is best carried out in the summer, autumn and spring of the first year. After a rainy season, the catchment pit has the best planting effect after fully intercepting and storing Rain Water.

After the    planting hole is dug, the topsoil, organic fertilizer and chemical fertilizer are mixed and backfilled, and the backfilling can be combined with fertilization. Practice shows that large pits are beneficial to the growth and development of roots and trees, while small pits inhibit the growth of trees, so big pits should be dug and planted in areas with better conditions. However, in areas with large wind and sand, large pits are not conducive to soil moisture conservation, so small pits should be planted. To build a garden in a wetland with high or low groundwater level, the drainage condition of the whole garden should be improved, the water level should be lowered, and then planting ditches or holes should be dug.

The supply of    fertilizer is an indispensable measure in the growth and development of walnut. Organic fertilizer can increase the content of soil humus, increase soil porosity, improve soil structure, and improve soil water and fertilizer conservation capacity. When planting walnut, applying appropriate amount of organic fertilizer as base fertilizer can effectively promote the growth and development of walnut and improve the stress resistance and yield of walnut. If the organic fertilizer is applied at the same time, the effect of adding appropriate amount of phosphate and nitrogen fertilizer will be better. It can be compost and mature according to the quantity of 50 kilograms per plant or 30 tons per hectare. At the same time, press 0. 5 per plant. 51kg prepare the required phosphate fertilizer. If the base fertilizer used is mainly straw, it should be mixed with 0. 5%. 1: 0. 2 kg of nitrogen fertilizer to promote straw decomposition. Pollution-free planting should try to avoid the use of inferior phosphate fertilizer with excessive heavy metals.