Post-planting management of grafted walnut seedlings in spring

Spring-planted walnut grafted seedlings can be planted in the spring after the soil is thawed and before germination, and can be planted later on the premise that the seedlings are not germinated. The following will be introduced for reference.

1. Cut off. After planting, the big seedlings should be re-cut at a distance of 15-20 cm from the bridal joint, and the young seedlings should be cut with 1-2 full buds. Do not decide to do it that year, cultivate a strong branch, and decide to do it the next year.

2. Protect the germination. When the walnut seedlings germinate, pay attention to protecting the new shoots to prevent the damage of spring leaf-eating pests (chafers, large gray weevil, etc.). You can use window screens or gauze to make an insect-proof bag to cover the sprouting of the plastic belt, and wait for the new shoots to reach 15- Remove the insect repellent bag at 20 cm.

3. Remove in time. The saplings will germinate multiple new shoots after being cut short, and it is also easy to cause new shoots to germinate below the grafted site. Check in time, select a new shoot that grows vigorously above the grafting interface, and retain all the others.

4. Strengthen fertilizer and water management and prevent leaf-eating pests. After the new shoots grow to 15-20 cm, combine the watering with 50 grams of urea per plant, and then apply fertilizer every 15-20 days, followed by 2-3 times. If the leaves are found to have been eaten by insects, they should be sprayed in time for prevention and control, and sprayed with foliar fertilizer.

5. Keep enough nutrition zone to avoid competing for water, fertilizer and glory with intercrops. Interplanting of young walnut trees is a powerful measure to improve land utilization, but intercropping must deal with the relationship with walnuts. First, it is forbidden to interplant high-stalk crops and perennial root medicinal materials, which can be intercropped with tubers and legumes. Intercropping and intercropping must keep a sufficient 1.5-meter nutrition zone in the tree row to ensure that the intercropping crops do not compete with seedlings and young trees for water, fertilizer and glory.

6. Strengthen weeding and weeding to promote growth. The seedlings and saplings in the year of planting are easily covered by weeds, especially in June, July, and August, when the peak growth period of saplings is also a period of mad weeds, weeding should be done in time.

7. Take control of the head. When the new shoots grow to 1-1.2 meters to reach the fixed stem height, topping should be done in time to control the sapling growth and promote the ripening of the lower branches.

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