The fertilization techniques and fertilization methods for big cherries are mainly the following:

First, fertilization technology

1, base fertilizer autumn

Autumn base fertilizer is generally performed in late August. Autumn Schiff base is at the peak of the root's autumn growth, which is conducive to the absorption of nutrients. At the same time, the root can also be well restored, and it is conducive to multiple rooting. Fertilizer can be used to fertilize the nutrient and increase the nutrient reserve before winter.

The types of autumn basal fertilizers include: farmyard manure, cake manure, and appropriate amounts of nitrogen, phosphorus, and potassium compound fertilizers. Farmyard manure is mainly fermented and decontaminated pig manure, cow dung, horse manure and chicken manure.

2, top dressing

Big cherry top dressing. Top dressing is divided into four phases, ie, top dressing before budding, mainly organic calcium fertilizer and boron fertilizer; top dressing before flowering, mainly using high-nitrogen and potassium-based NPK compound fertilizer; the top dressing of young fruit is grown at high speed and high nitrogen content. Potassium-based NPK fertilizer is the main fertilizer; after fruit-picking, top-dressing is organic-inorganic compound fertilizer.

3, outside the top dressing

Generally, the top-dressing fertilizer is carried out 3-4 times a year, after flowering and before harvesting, it is combined with the fight against drugs. The previous spray is 1000 times of vitalizer plus 0.3% urea solution, or spray “Lianma Green” foliar fertilizer 1500 times; Spray 1,000 times of vitality plus 0.3% of potassium dihydrogen phosphate solution, or spray 1500 times the "lion and horse gold" foliar fertilizer.

Second, fertilization method

1, radial groove fertilizer. Suitable for top dressing. Take the trunk as the center and dig 4-6 radial grooves 0.5-1.0 meters away from the trunk. The length of the grooves is longer than the outer edge of the canopy. The ditch is 15-20 cm deep and the ditch is 20-30 cm wide.

2, strip groove application. Suitable for base fertilizer. In the tree corresponding to the outer edge of both sides of the canopy fertilize. Each year, one direction is used alternately. When basal fertiliser is used in autumn, the ditch is larger and generally 30-40 cm.

3, ring groove application. Digging an annular groove around the canopy, this method is suitable for young trees with a small root range.

4, point facilities. Suitable for top dressing when saplings and mulch under the tree disk.

The above methods can be used alternately to distribute the fertilization material and facilitate the absorption of the root system. Care should be taken not to damage the main root when digging.

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