How to apply fertilizer and pull branches

First, fertilization

(1) From the outer edge of the canopy, the annular groove of 30 cm wide and 40 cm deep (sapling) is dug on the ground for fertilization. The large tree is to be dug 50 cm wide and 60 cm deep.

(2) Adult orchards can be fertilized by the method of gully. When digging trenches, the topsoil and the bottom soil should be piled separately, then the fertilizer and topsoil should be mixed and filled into the ditch to fill the bottom soil, and water should be poured in time after fertilization.

(3) The amount of fertilizer applied. 1 to 3 years old apple trees are 20-40 kg per plant, 4 to 5 years old apple trees are 40 to 80 kg per base fertilizer, and 6 to 10 years old apple trees are applied with 3000 to 3500 kg per mu. The fruit trees are applied with 4000-5000 kg of fertilizer per mu. In addition to the application of base fertilizer, it is necessary to apply phosphorus and potassium fertilizer at different times. The amount of phosphorus and potassium fertilizer per plant in different ages: the unfruited tree is 1 kg of phosphate fertilizer and 0.2 kg of potassium fertilizer. The initial result is 1.25 kg of phosphate fertilizer and 0.5 kg of potassium fertilizer. The fruit tree is 5 kg of phosphate fertilizer and 2 kg of potassium fertilizer.

Second, pull the branch Apple tree shaping and pulling branches from early September to early October is appropriate.

(1) The sawn wooden stakes are nailed into the ground, and the ropes or iron wires are tied to the wooden piles.

(2) The length of the lower branches of the canopy is 90-100 cm, the length of the middle branches is 70-80 cm, and the length of the upper branches is 50-60 cm. The angle of the branches should be 70°-90°.

(3) Remove the back branches within 20 cm from the center trunk in time, and pick the remaining branches.

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