2. The next step is planting. The cultivation of Carya cathayensis can be artificially cultivated or sown, which takes a long time. Most farmers use artificial cultivation of seedlings. Observe carefully when selecting seedlings. Generally, the ones with strong vitality, developed roots and disease-free are the best. Planting time is generally when the temperature is low in autumn and winter every year.
3. Management of young trees After planting, we should pay attention to the management of young trees and weed them in time in summer. Generally speaking, weeding should not be less than twice a year. Then topdressing in time according to the situation of young trees, which can be carried out together with weeding. Fertilizer is mainly available nitrogen fertilizer, and phosphorus, potassium and other fertilizers can be added appropriately. According to the planting amount, we can increase the dosage appropriately according to the long hair of the tree to strengthen the growth of walnut trees, provide sufficient nutrition for growth and prevent malnutrition.
4. Planting methods and precautions of hickory: When hickory grows up, the tree shape is relatively tall, and it will also have a certain height in the young tree period. Therefore, pruning should start in the early stage of young trees, and the pruning in the young tree stage should be mainly light pruning, and the fruiting mother branches should be reserved to advance the fruiting time. Pruning should aim at improving the permeability of orchard and increasing the light area of fruit trees. Early pruning should try to keep the upper part of the fruit tree, at least, cut off too dense and too long. Pay attention to the disinfection of the trimming mouth to prevent infection from causing pests and diseases and rot.
5. Comprehensive control of black walnut is the main measure; Spray medicine on the crown as an emergency measure. Choose suitable site conditions to build gardens, and avoid building gardens in wet places. 2. Choose varieties that are resistant to pests and diseases and have strong adaptability. Strengthen the management of soil, fertilizer and water to improve the tree potential. Protect the wound and prevent the invasion of germs. Remove residual fruits, fallen leaves, pests and branches in late autumn and early winter. The first time I sprayed the garden cleaner, it was just a few days after the fruit was put away and there were many leaves on the tree. The effect is good. The phenological period of spring and garden cleaning is when the buds turn white.
6. Prescription drugs in Qingyuan: 3000 times of Xingheng, 0/500 times of Shilong Tetra Pak, 3% of urea and 800 ~ 1000 times of pure calcium, magnesium and zinc in ADOMCOM. The crown is sprayed with 3-5 Baume sulfur mixture or star scale stone once a year. Spraying 8,000 times wind vane+3,000 times star mark or 72% agricultural streptomycin on the crown during fruit expansion, once every 10 day, and spraying continuously for 2 ~ 3 times. After the walnut is harvested every year, it will be reclaimed and propagated under the crown from May of the following year. The depth is above 15cm, and the range is slightly larger than the orthographic projection area of the crown. This can not only loosen the soil, store water and conserve moisture, but also promote the growth of trees. More importantly, the overwintering larvae of Lepidoptera cannot pupate and emerge when they are transferred into deep soil. For walnut trees that are not easy to be reclaimed, overgrown with weeds, and have deep ditches and large slopes, turf should be eradicated, litter should be removed, and concentrated and buried deeply.
7. Integrated control of black walnut is the main measure; Spray medicine on the crown as an emergency measure. Choose suitable site conditions to build gardens, and avoid building gardens in wet places. Choose varieties that are resistant to pests and diseases and have strong adaptability. Strengthen the management of soil, fertilizer and water to improve the tree potential. Protect the wound and prevent the invasion of germs. Remove residual fruits, fallen leaves, pests and branches in late autumn and early winter. The first time I sprayed the garden cleaner, it was just a few days after the fruit was put away and there were many leaves on the tree. The effect is good. The phenological period of spring and garden cleaning is when the buds turn white.