1. According to the physical and chemical properties of the soil, the growth of tea trees, the estimated yield, the type of tea and the climate, etc., determine the reasonable types, quantity and fertilization time of fertilizers, implement balanced fertilization in tea gardens, and prevent lack of fertilizer and excessive fertilization in tea gardens.

　　2 , It is advisable to apply more organic fertilizers, chemical fertilizers and organic fertilizers should be used together, avoid the simple use of chemical fertilizers and mineral-source fertilizers, and it is advisable to use special fertilizers for tea trees.

　　3 , Farmhouse manure and other organic fertilizers should be treated in a harmless manner before application, and the content of pollutants in organic fertilizers should meet the requirements of the allowable content of organic fertilizer pollutants. Microbial fertilizer should meet the requirements of NY/T227.

　　4 , Fertilization is divided into base fertilizer and top dressing.

　　5 , The base fertilizer is mainly organic fertilizer, which is applied deep in the furrow in autumn that year, and the fertilization depth is more than 20 cm. Generally, 200 kg to 400 kg of cake fertilizer or commercial organic fertilizer or 1,000 kg to 2,000 kg of farm organic fertilizer is applied per 667 square meters. According to the soil conditions, phosphate fertilizer, potash fertilizer and other required nutrients should be used in combination.

　　6 , Topdressing can be carried out many times in accordance with the growth law of tea trees, mainly chemical fertilizers, and ditching 15 to 30 days before tea mining, the depth of the ditch is about 10 cm. Topdressing chemical nitrogen fertilizer application amount per 667 square meters (in pure nitrogen) does not exceed 15 kg, and the maximum annual total amount does not exceed 60 kg. Cover soil in time after fertilization.

　　7 , According to the growth status of tea trees, foliar fertilizer can be used, and the applied foliar fertilizer should be registered by the Ministry of Agriculture. Foliar fertilizer should be combined with soil fertilization, and stop using it 10 days before picking.