The characteristics of apple fertilizer:

Apple belongs to the kind of fruit trees, is one of the main fruit varieties in the north. The root system is mainly distributed in the 0-40 cm soil layer, which is a deep-rooted fruit tree. The fertilizer absorption of apple trees was dominated by ammonia and phosphorus in the early stage and potassium in the middle and late stage. According to relevant reports, it takes 3.0-3.4kg of nitrogen (N), 0.8-1.1kg of phosphorus (P205) and 2.1-3.2kg of potassium (K20) from the soil to form 1000 kg of apple fruit.

Recommended fertilization scheme for apples: Take 6-7 year old apple trees, 4O-50 trees/mu of apple trees as an example

Attention to apple fertilization.

The method of apple fertilization can depend on tree strength, root distribution, tree age and soil condition. In general, ring and semi-ring furrow application is suitable for young trees. Ditch application, hole application, radioactive fertilization and garden spread are mostly used for adult trees. The depth of fertilization is generally 20-30 cm. With the expansion of tree crown, the range and depth of fertilization should be increased accordingly, and it is appropriate to apply in the main distribution layer of root system.

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