First, the new park management
1. Wiping buds and cutting stems
After germination, for plants less than 80 cm in height, select a strong bud at the top, and remove all buds and buds in the lower half; all plants with a height of 80 cm or more should be within the plastic belt (flatness of 80 cm or more. Slope height More than 60 cm) Spacing 10--15 cm Select four to five buds with different azimuths. The rest of buds and buds with a height of less than 40 cm will be completely wiped out;
2. Top dressing and irrigation
From late May to the end of July, fertilizers are applied once every 30 days, for a total of 2--3 times. Method: Around the tree, play 4 to 6 holes 15 to 20 centimeters from the tree trunk about 50 centimeters from the tree trunk and pour into the chemical fertilizer (compound 1-2-3 for compound fertilizer). Seal the soil after watering.
3. New tips topping
For tips that are not selected for the backbone, pick the heart early. Those who are over-prosperous are given 20 to 30 days intervals to pick up the heart twice. In mid-late and late-May, when the top of the trunk reaches 1.2m, it is picked up and promotes the formation of the first layer of branches. Leave three to four main lateral branches spaced 15-25 cm apart. After the main branch is pumped to 80--120cm, it continues to pick up the heart and cultivates the second branch. When each new shoot grows to 50--60 cm, it picks up the heart and promotes the formation of fruiting branches. In the middle and late August, all the new shoots that have not been parked are picked.
4. Straighten the trunk
Skewing the plant on the trunk, set up the ground pile on the back of the slope, and use a plastic rope to straighten the trunk.
Second, the results of Park Management
Wipe the bud
After germination, all sprouts on the roots, stems, and overlapping buds and dense buds germinated at other sites are erased as soon as possible. At the same time, the buds on the extension head of the stem are erased.
Pick fruit
In general, the fruit is left in the fourth year after planting. Before this, the fruit of the knot is removed early.
3. New tips topping
According to the shape and spacing of the tree, the main side, branch and main branch extensions were selected. For those who have not been selected as the backbone shoots or the shoot extensions of the backbone, the shoots and competition shoots will be picked up early. Over-prosperous, interval 20-30 days, the second picking heart; mid-May to early-June, the branches of all levels to extend slightly longer to 60 centimeters to pick up the heart, to promote branching; in late August, not stop The new shoots are taken from the heart.
4. Thinning
From May to July, weeding branches, dense branches, cross branches, and overlapping branches were used to eliminate the useless erect leggy branches and strong prosperous branches.
5. Top dressing and irrigation
In late June, strains containing 3-5% catties containing 15% to 18% nitrogen were used. The amount of fertilizer is determined by the age of the tree and the amount of excessive increase or decrease.
6. Weeding and weeding
Under the walnut trees, the shortage of cropland and the timely cultivation of weeds for loose soil and weeding for soil conservation and soil conservation can increase soil permeability and reduce the occurrence of pests and diseases.
7. Pest control
Applying 50 % methyl mop Zin WP to 50 times is beneficial to the healing of walnut rot disease and restoration of tree vigor; using a combination of beta cypermethrin, difenoconazole and potassium dihydrogen phosphate to control walnut anthrax Disease, brown spot;; In early June, after hanging on the ground under the canopy of the orchard and spraying matrine, it was used to control the unearthed adults of walnut limb moths. In July, chlorbenzuron was sprayed on the whole tree to treat the cloud beetle. In August, the walnut tree caterpillar, leaf leaf beetle, and beetle were treated with kungfufen or hexaflumuron with propinol zinc spray liquor. Pick pests in time and concentrate deep.
Third, the high access to change the tree management
1. Check the condition of the wound
1-2 days after that, one by one tree inspection, if there is no injury to the water outlet, there are accumulated water in the marrying interface, it is necessary to deepen the water outlet in a timely manner and discharge the wounds.
2. In addition to Meng
Immediately after eradication, the buds on the rootstock can be removed and two or three strips can be retained so that the buds can be remedied or the crown can be restored and replaced.
3. Release the wind
After 15-20 days, Scion Hou began to germinate, branching and spreading the leaves. Always inspect the plastic bags and other dressings. After the leaves appear, you can open the plastic and the upper end of the newspaper to make the tip of the tender shoots. Outlet, the plastic bag and the newspaper mouth cannot be opened too large at one time, and should be from small to large until the upper part is fully opened.
4. Establish pillars
When the new shoot grows to about 30 centimeters, it is necessary to set up a 1.5-meter-long pillar at the interface in a timely manner. The new shoot will be gently tied on the pillar to prevent wind bending. With the extension of the new shoot, it will be tied to 2--3. Times.
5. After 2 - 3 months (from early June to mid-July), loosen the binding rope at the interface once. In August, all the ropes were removed.
6. Topping
When the new shoot grows to about 40 cm, it is a topping. For the branches that were picked after picking, each of the branches was left with 2--3 azimuths and distances from the appropriate lateral branches, and the other were erased.
7. Removal of female and male flowers
After the tree is bred to survive, the male and female flowers germinating on the strip are removed in time.
8. Thinning
For new shoots sprouted at the base of the scions, weeds must be removed in time to avoid excessively dense, overlapping, overlapping, and improperly planted shoots.
9. Pest control
Spraying deltamethrin or matrine on the tree prevents scarabs and food buds from damaging the shoots.
10. Strengthen fertilizer management
Afterwards, water is drought and timely irrigation, and other management such as fertilization is strengthened.
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