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How Summer High Temperature Affect Tea Leaf Growth

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How Summer High Temperature Affect Tea Leaf Growth

2022-07-23 15:48:13

As mentioned earlier, the impact of low temperature on tea trees is mainly freezing damage, resulting in reduced production and quality of tea. When the tea tree encounters continuous high temperature, it will also affect its growth and development. According to scientific research, the maximum temperature that tea trees can tolerate is about 35 to 40 degrees under normal circumstances, and the critical point of survival is 45 degrees. In the natural environment, if the daily average temperature of the day is higher than 30 degrees, the growth of tea tree shoots will slow down or even stop. If the high temperature exceeds 35 degrees continuously, the tea tree shoots will dry up and die. Once this long-term high temperature weather lasts for 10 to 15 days, it may cause the entire tea tree to dry up and die, resulting in a reduction in tea production and no harvest.

Even if the high temperature does not last, the quality of tea produced in summer is also relatively low. Because the temperature is too high, it will accelerate the carbon metabolism in the tea tree, which will accelerate the conversion rate of polyphenols, resulting in high polyphenol content, stronger tea concentration, obvious bitterness, and aroma and fresh taste. fade.

Therefore, in the process of tea tree growth, it should be controlled and adjusted to ensure that the tea tree grows in the most suitable temperature range as much as possible. For the low temperature season in winter, we must take measures to prevent cold and keep warm, and in the high temperature period in summer, we should also pay attention to shading, sun protection and irrigation, so as to ensure the normal growth and development of tea trees and ensure the quality of tea leaves.