Fertilization techniques for Apple Orchard in Autumn

1. Fertilization principle: under the premise of increasing organic fertilizer and soil fertility, heavy potassium, nitrogen, stable phosphorus and micro fertilization should be popularized.

2. Types of fertilization: (1) Organic fertilizer mainly includes: feces and urine, stable manure, compost, cake fertilizer, straw, miscellaneous fertilizer and biogas fertilizer. (2) Chemical fertilizer mainly includes nitrogen fertilizer, phosphate fertilizer, potash fertilizer, compound fertilizer, biological bacterial fertilizer, soil conditioning fertilizer, trace element fertilizer and commercial organic fertilizer. It is strictly forbidden to use unharmless garbage, nitrate nitrogen fertilizer, potassium fertilizer containing chloride ions, unmature organic fertilizer, fertilizers explicitly prohibited by the state, and fertilizer products that have not been registered.

3. Fertilizer application amount: determine the target yield according to the soil nutrient content, that is, soil fertility, and determine the amount of chemical fertilizer based on the application of 3000 Mu 5000 kg high-quality mature organic fertilizer according to the fertilizer amount required for the target yield, soil fertilizer supply capacity, chemical fertilizer content and utilization rate.

4. Fertilization period: the mid-maturity varieties began to be harvested and ended in mid-late November.

5. Fertilization methods: (1) fertilization in annular ditch. At the outer edge of the vertical projection of the crown, a 20-40cm and wide 40cm ditch was dug to apply fertilizer. (2) fertilization in shooting ditch. Take the tree as the center, dig 6 radial ditches that gradually deepen from the inside to the outside to fertilize. The width of the ditch is 30-50cm and the depth is 20-40cm. The ditch is longer than the outer edge of the crown. (3) fertilization in banded ditch. The furrows of 20-40cm and 40-50cm wide were dug at the outer edge of the vertical projection of the crown. (4) scatter in the whole garden. After mixing the fertilizer evenly, sprinkle it on the surface of the orchard, and then turn it into the soil, the depth of 20-30cm. The above fertilization methods can be applied alternately, and the fertilizer and soil should be mixed evenly and irrigated in time if there are irrigation conditions.