How is walnut planting high yield? In summer, the management of soil and fertilizer should be scientific. At this time, the topdressing fertilizer is mainly composed of quick-acting fertilizer. During the fruit expansion period from May to June, the saplings of 2 to 3 years old are applied with 50g of urea and 100~150g of compound fertilizer. The fruit trees and fruiting period are initial. The plant applies 100-150 g of urea per plant and 100-200 g of compound fertilizer. It can be applied in radial, cryptate or furrow, with a depth of about 30 cm. After application, soil and water are applied. Foliar fertilizer can also be applied 1 or 2 times at the same time.
Commonly used fertilizer types and concentrations are: urea 0.3% to 0.5%, superphosphate 0.5% to 1.0%, potassium sulfate 0.2% to 0.3%. Spray fertilizer is generally carried out before 10 am or after 4 pm, and it is not suitable for spraying fertilizer in rainy or windy weather.
Under normal circumstances, the annual precipitation is 600 ~ 800mm, and the area where the precipitation is evenly distributed can meet the needs of walnut growth and development. In summer, there will often be insufficient or uneven distribution of precipitation, leading to long-term or staged drought. Therefore, water should be added to supplement water to meet the needs of walnut growth and development. However, the time and frequency of irrigation should be determined according to the specific conditions, and should generally be combined with fertilization.
In order to improve the utilization rate of the newly planted young trees, intercropping can be carried out. The intercropping crops are mainly low-stalk crops such as peanuts, millet, beans and Chinese herbal medicines. It is strictly forbidden to plant high-stalk crops such as corn. When intercropping, leave a 1.5-meter nutrient tape to ensure the normal growth of walnut seedlings.
Weeding the soil. Weeds not only compete with the walnut trees for water, but also easily attract pests and diseases. In order to obtain high yield, high yield and high quality, walnut trees generally need to be weeded 3 to 4 times. In addition, tilling the soil can increase soil permeability and moisture retention and prevent soil compaction.
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