Base fertilizer: The base fertilizer is generally based on late-effect farmyard manure, such as compost, manure, crop straw, green manure, and fallen leaves. An appropriate amount of quick-acting nitrogen fertilizer can be added to the base fertilizer.
Pre-flowering fertilizer: It can be applied to quick-acting nitrogen fertilizer about 10 days before the germination of plum tree.
Post-flowering fertilizer: The quick-acting nitrogen, phosphorus and potassium fertilizers should be applied in time to reduce the physiological fruit drop and increase the fruit setting rate.
Fruit swelling and flower bud differentiation period: After the physiological fruit drop to the fruit expansion period, the application of quick-acting nitrogen, phosphorus and potassium fertilizer can greatly improve the photosynthesis efficiency.
Topdressing in the late stage of fruit growth: After the fruit begins to be colored, it is mainly based on phosphorus and potassium fertilizer, and the quick-acting nitrogen fertilizer combined with spraying is good for foliar spray fertilizer.
The amount of fertilized saplings is less than that of the young trees, and the adult tree base fertilizer is 50 kg per farm. Topdressing each time, each plant applies 250 grams of urea and potassium fertilizer, and the calcium is 1.5 to 2.5 kilograms.
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