1. General production of tea gardens: nitrogen fertilizer (N) 20 to 30 kg/mu, phosphate fertilizer (P2O5) 4 to 6 kg/mu, potassium fertilizer (K2O) 6 to 10 kg/mu.
2. Magnesium-, zinc-, and boron-deficient tea plantations: The soil was treated with 2~3 kg/mu MgO, 0.7~1 kg/mu zinc sulfate (ZnSO47H2O) and 1 kg/mu borax (Na2B4O710H2O).
3. Sulfur-depleting tea gardens: Select sulfurous fertilizers such as ammonium sulfate, potassium sulfate, and superphosphate.
Fertilizers are applied in divided portions. Basal fertilizer: mainly organic manure, phosphorus, potassium and magnesium, trace element fertilizer, and the other 30% to 40% of nitrogen fertilizer is used for the whole year. It is applied from the end of September to the end of October after the end of the tea season. Base fertilizer is combined with deep plowing. Application, application depth is about 20 cm; Top dressing: mainly nitrogen fertilizer, pregermint fertilizer is applied about 30 days before harvesting spring tea, accounting for about 30% to 40% of the annual dosage, summer tea is topped with summer tea Before the tea begins to grow, it is usually in mid-to-late May. The dosage is about 20% of the whole year. Autumn tea is topdressed after the end of summer tea. It is usually applied in mid-late July, and the dosage is about 20% of the whole year.
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