The paper walnut tree is not strict on environmental conditions, as long as the average annual temperature of 9 ~ 16 ℃ or more, the annual rainfall of 800 millimeters or more can be planted. Then how to plant the paper walnut tree? Below is the paper walnut tree planting method that I have organized for you, I hope it is useful to you.

Paper walnut tree planting methods

1 Problems in walnut cultivation and production

1.1 Poor orchard occupancy conditions. Soil thickness is thin, can not meet the needs of walnut development; terrain is too low, high soil humidity in the latter season, is not conducive to the timely cessation of growth of the new shoots; terrain is low-lying and not leeward, easy to suffer from frost damage.

1.2 Part of the garden there is a lack of seedlings, and a large number of live walnut mixed.

1.3 Varieties are mixed, uneven growth, uneven fruiting, and too much difference between plants.

1.4 Some of the main trunk below the surface of the frost damage or mechanical damage has formed a number of stripes of disease scars, resulting in tree weakness, premature yellowing of the leaves, or even the death of the whole plant.

1.5 Pruning time is not grasped, pruning methods are not appropriate, are not conducive to the growth and development of walnut and flowering and fruiting.

1.6 Pest control is unfavorable. Walnut black, spiny moth, aspen, gray spot disease, dry rot, ulcer disease and other untimely prevention and treatment, seriously affecting the development of the tree and results.

1.7 Heavy planting and light management, laissez-faire management, part of the walnut orchard is in danger of being eliminated.

2 Specific methods to solve the problem

2.1 Grafting. For the garden of live seedlings and poor quality varieties can be re-grafting, grafting method to take the tooth, this method is simple and easy to carry out, need to pay attention to is: grafting part of the selection of 1 year-old strong branches; scion collection on the canopy periphery of the productive tree on the healthy development of the branch, spike picking time in mid-March, spikes picking trench sand, to be in late April ~ early May for grafting can be, the method of fast speed, the survival rate of up to 95% or more. The buds grow to 15 ~ 20 cm can be untied to remove the plastic strips, and set up a pillar to tie the live shoots to avoid wind folding.

2.2 Improve the soil. For poor ground conditions, leakage of fertilizer, leakage of water, soil barren garden, can take the guest soil and more organic fertilizer method of soil improvement, to maintain the normal growth of the tree and fruit.

2.3 Prevent frost damage. Before the arrival of winter, you can build an adobe wall or a temporary straw wall to block the wind in the west and north windward of the walnut garden. Remove the snow around the root neck and on the tree in time after snowfall to protect it from frost damage.

2.4 Timely pruning. Walnut tree pruning time requirements are very strict, in a year to the fall equinox pruning is the main, and pruning amount of a one-time do not be too heavy, especially young trees, branches can be evenly distributed within the canopy can be, in order not to affect each other as the principle of pruning. Tree shape can be used to sparse layered form and free spindle shape, stem height requirements 1 ~ 1.2 m. Every year in mid-September on the long new shoots from the old leaves to be cut off. Weak branches, dry branches, pests and diseases can also be removed in the spring after the emergence of buds, but the main trunk as little as possible to create scars. The large saw kerf when pruning is immediately painted to protect.

2.5 Trunk white. It is quite important to paint the trunk of young trees with white, which can prevent and control aspen, rot disease, dry rot, sunburn, frostbite, livestock gnawing and so on. White formula: 18 parts of water, salt 1 part, 6 parts of lime, 0.3 parts of oil, stone sulfur compound 1 part.

2.6 Pest control. Early spring before germination, the whole tree sprayed 1 time 5 boomerang degrees of stone sulfide, late May ~ early June were sprayed 1 time to control walnut black (lifting moth) drugs: cypermethrin + metribuzin. 7 ~ August sprayed 2 times the insecticide to prevent the stinging of moth pests, early spring and August pay attention to the observation of stem-boring pests, once found to be injected with a syringe into the hole of the worm 50 times 1605 can be.

3 Benefit Analysis

In recent years, China's high-quality walnuts are in short supply, the export of the European market is very promising, today's high-quality thin-skinned walnuts 7 ~ 8 a can be productive, an average yield of up to 175 ~ 225 kg per 667 m2, according to the market price of 10 ~ 12 yuan, the benefit of up to 3,500 ~ 4,500 yuan per 667 m2. And each 667 m2 annual input does not exceed 300 ~ 500 yuan, compared with the cultivation of crops with considerable benefits.

Walnut tree planting techniques

First, the garden selection

Walnut adaptability is strong, the environmental conditions are not strict. General altitude of 500-1500 meters, the average annual temperature of 9 ~ 16 ℃, annual rainfall of 800-1200 mm, sandy loam or calcareous soil, PH6.5-7.5, deep, loose, fertile, well-drained soil can be planted. Soil too sticky, too wet, poor drainage soil should not be planted. Walnut is a light-loving fruit tree, requires sufficient light, when building a garden in the mountains should choose the south slope is good.

Second, fine ground preparation

Ground preparation is to improve the survival rate of walnut cultivation and growth and development of an important link. The time for land preparation is generally half a year before afforestation. Ground preparation can be selected according to the walnut garden conditions: general slope below 10 degrees or flat, using a comprehensive ground preparation, plowing; slope 10-20 degrees, using reverse slope terrace ground preparation. That is, according to the planting of the plant row spacing, with the trend of the slope into a reverse-slope terracing; slope greater than 20 degrees, with the fish scale pits. That is, in the planting point to repair into a small platform, the following with the stone laying can. At the same time, according to the planting density, in the whole garden digging planting pits, generally require 1 meter square, digging pits when the soil is placed in layers, topsoil and farmyard manure, green manure, crop residues layered or mixed fill into the pit.

Planting management:

Planting time in late March before and after budding, planting 1 ~ 2-year-old seedlings with a high survival rate, should be watered after planting, and strengthen the management of water and fertilizer, frequent loosening of the soil and weeding, pay attention to the drainage of the rainy season, pay attention to the prevention and control of pests and diseases in June-July. Growth period should be pruning, dry height to maintain above 3m. Do not cut branches after leaf fall, otherwise it is easy to cause injury flow, affecting the growth of trees.

Planting time deciduous fruit trees is generally appropriate in winter, evergreen fruit trees in spring is appropriate, planting to do specification, to achieve horizontal and vertical rows. When planting the grafted mouth should be exposed to the ground, the root system should be stretched, and then cultivate the soil, stamping, irrigation, water seepage and then seal the hole, in order to facilitate the preservation of water.

Tall walnut trees have a long lifespan, hundreds of years of large trees can still maintain a high yield. Tall trees, thick branches and leaves, a large walnut tree crown diameter of up to more than 10 meters, covering an area of 100 to 200 square meters.