During the planting period, the autumn planting can be carried out from the fallen leaves to the soil before freezing (that is, from October to November). The spring drought in northern regions should be planted in autumn. The advantage is that the roots are easy to heal, the late springs germinate early, and they grow strong. The disadvantage is that the upper part of the seedlings is easy to drain, especially weak seedlings with poor lignification, so care should be taken to protect the young trees against cold in winter. .
Planting density promotes dwarf planting for the purpose of achieving early results and increasing the yield per unit area to achieve early yields. The most suitable plant spacing for walnuts is 3 meters 4 to 5 meters or 4 meters 5 meters or several narrow rows to leave a wide row. As early as walnut thin shell, high quality, high yield, generally 2 to 3 years after grafting fruit, early high yield, suitable for dwarf close planting cultivation.
Before digging and planting the planting hole, planting holes shall be planted according to the spacing of the planned planting lines, and the length, width and depth shall be 1 meter each. When digging, the excavated topsoil and subsoil are separated on both sides. Autumn planting, summer digging. Digging holes in advance can make the soil have a longer weathering time, and can also prevent the sinking of tree pits, resulting in hanging and rooting phenomenon. After the planting hole is dug, the topsoil, organic fertilizer and chemical fertilizer are mixed and backfilled. Each hole is applied with 30 to 50 kg of farmyard fertilizer, 1 to 2 kg of phosphate fertilizer or silicon calcium magnesium and potassium fertilizer. Backfill to 30-40 cm from the ground, and then fill the soil back to the pit full, to ensure that the root system can not be directly contacted with organic fertilizer or chemical fertilizer, irrigation and solidification, preparation for planting.
Before the seedlings are planted and planted, the seedlings are graded according to different height and other specifications, so that the seedlings of the same grade are planted on the same plot. The roots of the seedlings were first pruned, the lower part of the main roots of the seedlings were cut flat, the clefts and rot parts were cut off, and the plastic film that tied the joints was removed. Roots are then immersed in 100-fold Guofukang's solution for 1 minute. For long-distance transportation, soak in clean water for 12 hours or soak in 2000 times No. 3 rooting powder solution for 2-20 minutes.
Membrane-covered plants were planted on a solid planting hole, and a 50-cm square planting hole was dug. The seedlings were placed vertically and horizontally. The roots were stretched vertically. The roots were stretched, and the backfill soil was slightly higher than the rhizomes. The water in the foot is solid, and the earth surface is just in the rhizome after sinking. Planted too deep, poor growth, weak tree vigor; too shallow, prone to drought, resulting in dead seedlings. After planting, it shall be timely covered with mulch film. After the water is completely infiltrated, it shall be covered with a layer of loose soil and covered with a layer of 1 m square mulch. The middle shall be slightly lower, and the soil shall be pressed tightly around it. Improve the temperature and increase the survival rate. Http://
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