1. Organize the root system. The roots of fruit trees have been damaged after being dug out from the nursery. In order to reduce the injured area, they should be sorted out. Remove part of the main root with scissors, and cut the large lateral root flat from the injured part. Do not cut obliquely, and the wound is easy to recover.
2. Tidy the branches and leaves. After the root system is cut off, it cannot absorb sufficient water from the soil for the aboveground branches and leaves to evaporate. Cut off 2 / 3 of the branches and leaves to reduce transpiration, so as to improve the survival rate.
3. Timely planting. Spring planting should be carried out after soil thawing and before seedling germination. Planting too early or too late is not conducive to seedling survival. Due to the different characteristics of tree species, the planting time should be different. Peach, apricot and plum should be early and red jujube should be late. Generally, it is appropriate to plant immediately after the soil freezes.
4. Select high-quality seedlings. The quality of seedlings is one of the important factors affecting the survival rate of colonization. Seedlings with high technical standards should be selected as far as possible, such as no diseases and pests, strong growth, developed roots, thick and short internodes, etc. Carefully select seedlings before planting, eliminate unqualified weak seedlings, overgrown seedlings, injured seedlings, etc., and sort out seedlings.
5. Colonization technology. First, apply enough base fertilizer. Apply 1 kg of Leili seaweed fertilizer, 2 kg of Aoli bacterial fertilizer and 0.2 kg of Aoli biological organic bacterial agent to each stump in the planting hole, and mix well with the soil before planting. Second, root soaking with nutrient solution. Before transplanting, immerse the root system in the nutrient solution prepared with 15ml Genwang, 25ml jikeshan and 10L water for 30 minutes, which can promote root wound healing, accelerate the recovery of root growth and improve the survival rate. Third, remove the film at the interface. If the grafting film is not removed, the lower and upper parts of the marriage interface will grow and thicken, and the growth at the marriage interface is not synchronous, so it is easy to break from the marriage interface when there is a strong wind. Fourth, balance the root system. When the seedlings are put into the planting hole, the root system shall be leveled to stretch the root system, so as to ensure the normal growth of the root system. Fifth, drench feet and install stump water. Put the seedlings into the planting hole, cover with a thin layer of fine soil, pour enough water to make the root soil closely connected, and then cover with a layer of soil. Sixth, pay attention to the interface. When planting citrus fruit trees, the marriage interface should be exposed, while the marriage interface should not be exposed for red bayberry, plum, peach, chestnut and other fruit trees in order to grow and develop normally. Seventh, tree cover. After planting, cover the topsoil of tree stumps with straw, thatch, crop straw or pig and cow dung to maintain soil moisture and restore growth.
6. Cover with plastic film. After planting, the surrounding area shall be raked into a shallow pot shape with the fixed seedlings as the center, and covered with 80-100 cm square plastic film. It can effectively improve the ground temperature, drought resistance and moisture conservation, and promote the early growth of buds.
7. Fertilizer and water management. Watering the fruit trees with fertilizer and water once on the 10th and 20th day after planting is the key to restore root growth. 10 days after planting, the root callus began to recover. At this time, the solution was prepared according to the proportion of 15 ml of root flourishing, 15 ml of jikeshan, 0.25 kg of high nitrogen Chong fertilization and 50 L of water. Drenching 1 l per stump could improve the root activity and shorten the slow seedling period; 20 days after planting, the solution was prepared according to the proportion of high nitrogen flushing fertilization of 0.25 kg, 3% metalaxyl · oxamyl of 23 g and 50 liters of water, and 1 liter of water was sprayed on each stump, which could promote the germination of new shoots. By August, 0.3% high nitrogen fertilizer was applied once a month, and the survival rate of seedlings reached 95%.
8. Dry. According to the cultivation requirements, 35 full buds shall be cut at the fixed drying height. The cutting mouth shall be smooth without splitting, and shall be treated with sealing agent or plastic film to prevent water loss and drainage. In areas with frequent Gales in spring, support pillars should be set up to prevent the trees from shaking.
9. Post planting management. According to the management principle of “promoting before and controlling after”, the newly planted seedlings shall be irrigated in time according to the growth status of fruit trees and soil moisture, and fertilized in time. At the same time, attention shall be paid to the prevention and control of diseases and pests at the seedling stage. Create a good environmental condition for seedling growth as far as possible.
Post time: Jan-26-2022