High summer temperatures, often in drought, roots tea limited water conditions, weak absorption, poor root fertilization. If foliar spray fertilizer is used during the growth of summer tea, it can not only increase the yield of tea, but also enhance the tenderness of the new shoots, which is conducive to the improvement of the quality of summer tea. The test proved that the tea leaf surface spray fertilizer can increase the yield of tea by about 10% .

The specific method is: using urea 0.5-1% , ammonium sulfate 1% , superphosphate 1-2% , potassium sulfate 0.5-1% . Yu extended application time to shoot strong, cloudy day when the 1-2 leaf buds 1 to start the evening or in the morning as well. Liquid fertilizer per acre 5-100 kg, 3-6 times a day at intervals of 1 spraying. At the time of spraying, the front and back sides should be sprayed at the same time, especially the back of the leaf must be sprayed. During the spraying process, avoid high temperature exposure, cause water evaporation and change the fertilizer concentration, and also prevent the fertilizer from being washed in rainy days. At the same time as foliar spray fertilizer, it is still necessary to strengthen the root dressing of tea trees to achieve mutual promotion.