In recent years, many tea gardens have encountered problems such as insufficient input of organic fertilizers in winter, poor soil and poor water and fertilizer retention capacity, and high fertilizer consumption. This is mostly caused by improper fertilization. It is recommended that growers adopt the following fertilization principles and suggestions:
Fertilization principle
1. Increase the application of organic fertilizers, combined with organic and inorganic applications, and appropriate deep application (below 15 cm).
2. Determine the amount of nitrogen fertilizer based on soil fertility conditions, tea types and yield levels, strengthen the combined application of phosphorus, potassium, and magnesium fertilizers, pay attention to the supplement of nutrients such as sulfur and boron, and maintain an appropriate nutrient distribution ratio.
3. Tea gardens with severe soil acidification can be improved by applying lime and other measures.
4. Combine scientific fertilization with green cultivation techniques for increasing yield and efficiency.
Fertilization measures
1. Generally, for the production of tea gardens, nitrogen fertilizer is 15-30 kg per mu, phosphate fertilizer is 4-6 kg per mu, and potash fertilizer is 4-8 kg per mu. The above fertilization amount includes the nutrients in organic fertilizers.
2. For tea gardens lacking in magnesium, zinc and boron, apply 2 to 3 kg of magnesium fertilizer per mu, 0.7 to 1 kg per mu of zinc sulfate, and 1 kg per mu of borax.
3. For sulfur-deficient tea gardens, choose sulfur-containing fertilizers, such as ammonium sulfate, potassium sulfate, magnesium sulfate, superphosphate or potassium sulfate type compound fertilizer.
In principle, organic fertilizer, phosphorus, potassium, and magnesium are mainly winter base fertilizer, and nitrogen fertilizer is applied in stages.
4. It is recommended to use special fertilizer, combined with organic fertilizer and available nitrogen fertilizer.
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