What are the methods for applying foliar fertilizer to tea plants in summer?
How to apply foliar fertilizer to tea plants in summer? Please explain: In summer, temperatures are high and drought is common. The roots of tea plants are limited by moisture conditions, their absorption capacity is weak, and the effect of root fertilization is poor. If foliar spraying is carried out during the summer tea growth period, it can not only increase tea yield, but also enhance the tenderness retention of new buds, which is beneficial for...
How to apply foliar fertilizer to tea plants in summer? Please explain
In summer, temperatures are high and drought is common. The roots of tea plants are limited by moisture conditions, their absorption capacity is weak, and the effect of root fertilization is poor. If foliar spraying is carried out during the summer tea growth period, it can not only increase tea yield, but also enhance the tenderness retention of new buds, which is beneficial for improving the quality of summer tea. Experiments have shown that foliar spraying of tea plants can increase tea yield by about 10%.
The specific method is: use 0.5-1% urea, 1% ammonium sulfate, 1-2% superphosphate, 0.5-1% potassium sulfate. The best application time is when new shoots are growing vigorously and 1 bud and 1-2 leaves have unfolded, on cloudy days, in the evening or in the morning. Each time use 5-100 kg of fertilizer solution per mu, spraying once every 3-6 days. When spraying, both the front and back sides must be sprayed at the same time, especially the back of the leaves must be sprayed. During the spraying process, avoid high-temperature exposure, which causes water evaporation and changes the fertilizer concentration, and also prevent fertilizer from being washed off on rainy days. While applying foliar fertilizer, root topdressing of tea plants should still be strengthened to achieve mutual promotion.
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