Summer temperatures are high, often encounter drought, tea tree roots are limited by water conditions, weak absorption capacity, poor root fertigation effect. If foliar fertilizer is applied during the growth of summer tea, not only the tea yield can be increased, but also the tenderness of new shoots can be enhanced and the quality of summer tea can be improved. Tests have shown that spraying leaves of tea leaves can increase tea production by about 10%.

The specific method is: using urea 0.5-1%, ammonium sulfate 1%, calcium superphosphate 1-2%, potassium sulfate 0.5-1%. The time of application is prosperous with new shoots, cloudy days when 1 bud or 1-2 leaves are unfolded, and evening or morning is better. Each time, 5-100 kg of fertilizer solution is used per acre, spraying once every 3-6 days. When spraying, both front and back sides must be sprayed at the same time, especially the back of the leaves must be sprayed. During the spraying process, high temperature exposure should be avoided to cause the evaporation of water and change the fertilizer concentration, and at the same time, the fertilizer should be prevented from being washed out on rainy days. While spraying fertilizer on the leaves, it is still necessary to strengthen the top dressing of tea plants in order to achieve mutual promotion.

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