1. Although the nutrient content of organic fertilizer is low, compared with chemical fertilizer, organic fertilizer has a long effect and has no destructive ability to soil structure, and long-term application will not cause soil salinization and hardening. However, organic fertilizers that have not been decomposed and fermented often contain bacteria and eggs, and the nutrient utilization rate is low. If it is applied to the soil, it will not only harm the plant roots, but also ferment again under the action of soil anaerobic bacteria, resulting in the phenomenon of burning roots and seedlings. The organic fertilizer fermented by Gymboree fertilizer starter will not cause "root burning" and "seedling burning" in the field. The organic fertilizer is rich in organic matter and beneficial microorganisms, which can effectively promote the formation of soil aggregate structure, obviously improve the soil micro-ecological environment, enhance the soil permeability and water and fertilizer conservation performance, and improve the potential of soil to continuously increase production and income. Microorganisms in microbial inoculants proliferate in the fermentation process, and the propagated functional flora and metabolites can release the fixed and wasted phosphorus and potassium elements in the soil, which can be absorbed and utilized by crops again, thus greatly improving the utilization rate of fertilizers by crops and reducing the cost of fertilization. 2. Adjust nutrients according to soil fertility conditions and yield level, appropriately reduce the amount of nitrogen fertilizer, strengthen the coordinated application of phosphorus, potassium, magnesium fertilizer and Gymboree microbial fertilizer, and pay attention to the supplement of nutrients such as sulfur and boron. In principle, the organic fertilizer and nitrogen, phosphorus, potassium and magnesium fertilizers are mainly in autumn and winter, and the application of nitrogen fertilizer by stages can obviously reduce the volatilization and leaching loss of nitrogen fertilizer and improve the utilization rate of nitrogen fertilizer by more than 20%. The most suitable period for applying base fertilizer is from the end of September to the end of tea season 10. Base fertilizer can be applied with deep ploughing, and the application depth is about 20 cm. Topdressing is generally based on nitrogen fertilizer, and the topdressing period is determined according to the growth of tea trees and tea picking.