The planting period can be planted in autumn from after the leaves have fallen to before the soil freezes (that is, from October to November). Autumn planting is suitable for spring and drought areas in the north. The advantage is that the wounded roots are easy to heal, and the next spring germinates early and grows strong. The disadvantage is that the upper part of the saplings is easy to drain, especially the weak seedlings with poor lignification. .
Planting density In order to achieve early fruit and increase yield per unit area, to achieve the purpose of early fruit and high yield, dwarf and dense planting is implemented. The most suitable row spacing for walnut planting is 3 meters × 4 to 5 meters or 4 meters × 5 meters or several narrow rows with one wide row. Early-fruiting walnuts have thin shells, high quality, and high yield. Generally, they will bear fruit 2 to 3 years after grafting. The early yield is high and it is suitable for dwarfing and dense planting.
Dig the planting hole before planting according to the planned row spacing, 1 meter in length, width and depth. When digging a hole, the topsoil and subsoil excavated are placed on both sides separately. Planting in autumn, digging holes in summer. Digging holes in advance can make the soil have a longer weathering time, and can also prevent tree pits from sinking and causing root hanging. After the planting holes are dug, the topsoil, organic fertilizer and chemical fertilizers are mixed and backfilled, and 30-50 kilograms of high-quality farmyard manure and 1 to 2 kilograms of phosphate fertilizer or silicon-calcium-magnesium potassium fertilizer are applied to each hole. Backfill to a place 30-40 cm from the ground, and then backfill the soil until the pit is full to ensure that the root system cannot directly contact the organic fertilizer or chemical fertilizer when planting the seedlings. The irrigation is solid and ready for planting.
Seedlings are treated before planting. Seedlings are classified according to different heights and thicknesses, so that the same level of seedlings are planted on the same plot. First trim the roots of the seedlings, cut the lower part of the main root of the seedlings flat, cut off the split and rotten parts, and remove the plastic film binding the grafting interface. Then immerse the root system in 100 times fruit Fukang liquid for 1 minute for disinfection. For long-distance transportation, soak it in clean water for 12 hours or use 2000 times No. 3 rooting powder solution for 2 to 20 minutes.
Planting with plastic film on a solid planting hole, dig 50 cm square planting hole, horizontally and vertically, put the graded seedlings in the hole vertically, requiring the root system to stretch, backfilling soil to make the soil surface slightly higher than the rhizome, a little steadfast, watering Sufficient water is solidified, and after solidification, the soil surface is exactly on the rhizome. If the planting is too deep, the growth will be poor, and the tree will be weak; if it is too shallow, it will be prone to drought and cause dead seedlings. After planting, it should be covered with plastic film in time to protect moisture. After the water has completely infiltrated, cover it with a layer of loose soil and cover with a layer of 1 meter square plastic film. The middle is slightly lower and the surroundings are compacted with soil. The plastic film can protect moisture, Increase ground temperature and increase survival rate.
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