1, digging backfill
It can be both in the autumn of last year and the spring of that year. Dig a hole according to the standard of 80cm square, dig out the topsoil and subsoil separately. Due to the good surface soil texture, high nutrient content, poor texture of the underlying soil, and low nutrient content, and the root system is mainly concentrated on the surface layer, the soil layer cannot be disturbed when backfilling, and the soil layer cannot be turned upside down. It is better not to backfill with subsoil. Instead of using subsurface soil instead of subsoil. When backfilling, add some straw and weeds at the bottom to help the soil breathe and backfill with the original middle layer of soil. In the middle layer, mix the surface top soil with organic fertilizer and apply 30-40 kg of high-quality ring fertilizer to each tree, but not Applied to the bottom layer; the upper layer is backfilled with the original topsoil and no fine fertilizer is applied until the seedlings survive and then topdressing to prevent early fertilization and burning of roots, which will affect survival. After the filling, it is poured with water and it is best to complete it 1 month before planting.
2, choose seedlings, disinfection
The advantages and disadvantages of seedlings have a great influence on the growth results. The seedlings must be graded before planting, and good seedlings and secondary seedlings should be planted separately. To cut the roots of the lesions and the dense roots, dip them with a 20-fold lime solution, wash them with water after disinfection, and plant them. For the land with poor sloping conditions in the mountains, the seedlings should be soaked with fresh water for 1-2 days before planting, so that the seedlings can fully absorb enough water, and then be sterilized and planted to increase the survival rate.
3, colonization
The best planting period is planting before germination from early March to late March. In this period of planting, the ground temperature rises quickly, easy to take root, and the survival rate is high. When planting, first dig a small hole in the backfilled hole so that the root system is evenly distributed in the soil, and pay attention to the alignment of the front and back, left and right, and then fill the soil. When the fill is near, fill the seedling gently upwards. The root system is stretched, regardless of grafted seedlings, or semi-emerged seedlings, seedlings, planting should not be too deep, in order to seedlings in the original nursery ground and the surface of the earth flush, prevail, after pouring water, wait until the water all After seeping, level the tree tray.
4, dry
After the seedlings are planted, they should be dried immediately and cut at a height of 30-50 cm, leaving 5-10 plump and full leaves. 5 cover film
In spring, the weather is dry, rainy, windy, and the moisture evaporates. After the seedlings are planted and dried, they must immediately cover 1 m square of the mulch, which will not only keep warm, moisturize, but also promote root activity. It is an effective measure to increase the survival rate of seedlings and shorten the seedling-suspending period.
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