Low-yield orchard fertilization is dominated by a large number of farmyard fertilizers, and nitrogen, phosphorus, and potassium fertilizers are applied in combination. Focus on four fertilization:
Fertilizers are dominated by nitrogenous fertilizers supplemented with phosphorus and potassium, and boron, zinc, and other micronutrients are applied in appropriate amounts, which are applied about 10 days before the spring sprouting.
The flower bud differentiation fertilizer is mainly composed of compound fertilizer and phosphorus fertilizer with low nitrogen content. It is applied when most of the new shoots are stopped in late May.
The fruit enlargement fertilizer is dominated by potash fertilizer, combined with the application of a compound fertilizer with low nitrogen content, and it is applied from mid-July to mid-August.
The nutrient reserve fertilizer (basal fertilizer) is mainly farmyard manure, combined with the application of a small amount of nitrogen and phosphate fertilizer. It is applied from late September to October. (N fertilizer must be applied in time after fruit collection, so as not to affect fruit coloration).
Appropriate amount of irrigation was applied to each fertilization, and the amount of fertilizer and type of fertilization were adjusted according to the nutrient status at the time of the tree, the strength of the tree vigor, and the ability of the soil to supply fertilizer. (
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