Post-harvest fertilizer was applied within 5-10 days after fruit harvesting of winter jujube, mainly biological bacterial fertilizer, high-quality organic fertilizer, complete nitrogen, phosphorus and potassium fertilizer and high-efficiency phosphorus and potassium fertilizer, and medium and trace element fertilizers were added. For fruiting trees that are more than three years old, or trees with more than 50 kg of fruit picking, 0.25-0.50 kg of compound biological fertilizer, 1-1.5 kg of superphosphate or calcium-magnesium-phosphate fertilizer, 0.5-0.75 kg of potassium sulfate, 0.20-0.25 kg of magnesium sulfate, 0.15-0.20 kg of borax, and 0.10-0.15 kg of zinc sulfate are applied to each plant.
After all the fertilizer is fully stirred and mixed evenly, dig a deep and wide annular shallow ditch of 25-30 cm around the drip line of the canopy, or dig 4-6 radial shallow ditches with a depth of 15-20 cm, a width of 25-30 cm and a length of 80-100 cm on the tree tray under the canopy, and drag the fertilizer evenly in the annular shallow ditch or radial shallow ditch, and cover the soil. If the weather is dry after fertilization, 50-60 kg of water, bio-organic fertilizer and biogas slurry should be applied to each tree, and evenly applied on the soil covering the annular shallow ditch or radial shallow ditch, so that the water completely penetrates into the soil and does not flow out, so as to promote the dissolution and transformation of fertilizer, supply root absorption and utilization, improve the effect of postharvest fertilization, and enhance the drought resistance of the plant.
Before fertilization, it is necessary to combine the garden, remove all kinds of weeds and dead branches and fallen fruits in the orchard, and concentrate on burning or deep burial, which can not only improve the fertilization effect, but also eliminate various overwintering bacteria and insect sources, and reduce the occurrence and damage of diseases and insects in the second year.
How to fertilize winter dates after harvesting is introduced here, I hope it will be helpful to everyone. If you want to buy high-quality and high-yield winter dates, you can download the seed bank App, and the country's excellent winter dates varieties are available for everyone to choose.
Download the Torrent App