The benefits of developing walnut production are very good, especially the price of thin-shelled walnuts has been rising in recent years. However, fruit growers everywhere are not able to grasp the characteristics of thin-shell walnut grafted seedlings when planting a new variety, shell walnut, which reduces the survival rate of planting. Here, according to my actual planting experience, the author summarizes several measures to improve the survival rate of walnut plants for your reference.
First, when planting selected grafted seedlings to buy strong seedlings, because of its high survival rate, rapid growth. Strong seedlings should be seedlings with a high degree of lignification above the grafting site, a diameter of more than 1 cm and a length of 80 cm or more.
Second, before planting, the dipping root walnut tree contains more tannins in the body, which affects the rooting. Therefore, the roots must be immersed before planting so that the seedlings can absorb water and dilute the body's tannins, which is favorable for rooting after planting. Usually, the newly purchased roots of grafted seedlings are soaked in fresh water for 3 days and then planted, which can greatly increase the survival rate.
Third, the protection of winter planting saplings generally speaking, walnut planting in spring than the high survival rate. As the saying goes, “A dream is planted in the fall and a disease is planted in the spring.†After the walnuts fall, they can be planted as long as the land is not frozen. However, the drawback of the autumn planting is that the upper part of the seedlings is easy to drain, especially weak seedlings with poor lignification, and can even be killed. In order to solve this problem, some young saplings that can be bent and not broken can be bent and cultivated, and will be picked up before germination in the coming spring. For large saplings that cannot be bent, the lower part of the sapling can be cultivated. The upper part of the ground is covered with a long tube of plastic film. The middle part is tied with a string and is to be released before the spring of next spring. Take these measures, can be a good solution to the serious drawbacks of walnut hanging out.
Fourth, can not be pruned immediately after planting Practice has proved that after the walnut planted dry pruning will lead to dead trees. Walnut is not the same as other fruit trees. It is a kind of tree with severe cut-off and injurious flow. Whether it is autumn or spring, it will be dried and trimmed immediately after planting, which will inevitably lead to a large number of injuries and cause nutritional loss. Because the roots of the soil in the lower part of the seedlings have not yet been stretched and survived, they cannot absorb the nutrient supply tree body and are not connected up and down. This will inevitably lead to dead trees. Not only can walnuts not be trimmed immediately after planting, but in most cases they should not be trimmed in the first year after planting. The first year after the walnuts were planted, the main growth was to expand the underground roots, and the growth of shoots in the shoots was relatively small. If pruned in the same year, it would inevitably reduce the amount of foliage and affect the overall growth of the tree. Therefore, in the first year after planting, the buds below the grafting site will be completely wiped out, and the leaves above the grafting site should be preserved. The principle is to maximize the amount of foliage, do not have to consider pruning, to wait for the growth of a year after the formation of tree vigor, and then trimmed according to the requirements of the tree.
Fifth, the tree pit soil must be compacted and then planted in a thick shell of walnut trees and hi deep soil. It is best to dig large holes on the ground. Tree pits are 1 meter square and more than 70 centimeters deep, but such large tree holes should not be planted immediately after they are dug. They should be filled with straw and backfilled with soil. If trees are planted immediately after the big hole is filled, they will continue to sink, and they will often “deadâ€.
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Potato 100-150g
Potato 100-150G,Potato Food,Potato Plant,White Potato
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