Regardless of jujube trees or apple trees, fertilization in autumn is still dominated by organic fertilizers. If organic fertilizers are not available, bio-organic fertilizers may be used, and a small amount of compound fertilizer may be added. The amount of organic manure applied to adult jujube trees is determined according to the output target. Generally, the fertilizer is used as "pound for pounds and nuts". If 50 kilograms of fresh dates are to be produced, at least 50 kilograms of organic fertilizer should be applied. The application rate of compound fertilizer is 0.75 kg of pure nitrogen per year, 0.5 kg of phosphorus pentoxide, and 0.5 kg of potassium oxide; the amount of fertilizer applied to adult apple trees is slightly more than that of jujube trees.
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