Detailed Explanation of Scientific Topdressing Methods and Technical Key Points for Tea Plants
How to scientifically topdress tea plants? Please provide guidance. Tea fertilization should, on the basis of adhering to the combination of organic fertilizers and inorganic fertilizers, control the total amount of nitrogen fertilizer, especially the amount of nitrogen fertilizer applied in the later stage, so as to improve tea quality. At the same time, pay attention to the combined application of the three major nutrients nitrogen, phosphorus and potassium and the balanced application of medium and trace elements. It is strictly prohibited to apply...
How to scientifically topdress tea plants? Please provide guidance.
Tea fertilization should, on the basis of adhering to the combination of organic fertilizers and inorganic fertilizers, control the total amount of nitrogen fertilizer, especially the amount of nitrogen fertilizer applied in the later stage, so as to improve tea quality. At the same time, pay attention to the combined application of the three major nutrients nitrogen, phosphorus and potassium and the balanced application of medium and trace elements. It is strictly prohibited to apply chlorine-containing fertilizers, and sulfur-containing special fertilizers should be vigorously promoted.
Total fertilization amount. The application rate of organic fertilizer is about 2000 kg per mu. When the tea yield per mu (fresh leaves, the same below) is below 250 kg, apply 12 kg of nitrogen fertilizer, 6 kg of phosphate fertilizer and 8 kg of potassium fertilizer per mu. When the yield per mu is 250-350 kg, apply 11 kg of nitrogen fertilizer, 5.5 kg of phosphate fertilizer and 7.5 kg of potassium fertilizer per mu. When the yield per mu is above 350 kg, apply 10 kg of nitrogen fertilizer, 5 kg of phosphate fertilizer and 7 kg of potassium fertilizer per mu.
Fertilization ratio. Base fertilizer: 100% of the organic fertilizer and phosphate fertilizer, and 40% of the nitrogen and potassium fertilizers are generally applied deeply as base fertilizer in combination with deep tillage from September to November. Topdressing: applied during the period when tea plants begin to sprout and new shoots grow, mainly with quick-acting nitrogen fertilizer containing more nitrogen, applied in combination with nitrogen and potassium fertilizers, and applied promptly after each tea picking season. The topdressing ratios of nitrogen and potassium fertilizers in spring, summer and autumn account for 25%, 20% and 15% of the total fertilization amount respectively.
For the application method, dig a fertilization ditch 15-25 cm wide and deep between two rows of tea plants, mix the fertilizers evenly and apply deeply, and cover with soil promptly after application.
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