At present, tea trees are in the wintering period, and their cold resistance is strong. However, if the cold continues (below -5 ℃), or the temperature slightly rises before the snow melts, and it encounters low temperature (below -5 ℃), and it lasts for a long time, it will cause severe frost damage to the tea tree. Provincial expert of the provincial tea industry technology system and associate professor Li Yeyun of Anhui Agricultural University reminded tea farmers to do a good job in preventing cold and frost in tea gardens before the extreme weather of freezing rain and snow comes to reduce the impact of disasters.

Associate Professor Li Yeyun introduced that for tea gardens that are prone to stagnating water, tea farmers need to clear the tea garden drainage ditch so that the melted snow can flow out of the tea garden to avoid damage to the roots. 5-7 days before the onset of severe cold weather, tea farmers can spray with 0.1% S 50ml of 50% humic acid + 50ml of humic acid (Guoguangluokang) and 20kg of water to spray, which can enhance the immune resistance of tea trees and reduce cold damage.

Tea seedlings have weak anti-freezing ability. For nurseries that have been shaded before the winter, tea farmers need to re-cover the shade net and film. The autumn cutting nursery field that has been covered with shade nets and films can be covered with non-woven insulation or straw curtains on the outside of the shade nets. Tea farmers also need to check again whether the film of the small arch shed is completely pressed into the soil on all sides to prevent the wind from blowing the arch shed and frostbite the tea seedlings. The small arch shed in the nursery should be inspected in time to remove the excessively thick snow on the shed surface, and the arch shed damaged by the snow should be repaired in time.

Juvenile tea gardens can be covered with 5-10 cm thick straw and other crop straws and weeds on the roots of tea trees. The newly transplanted tea seedlings in autumn, because the root system has not yet fully recovered, can easily be arched by the entire frozen soil, causing the tea seedlings to die. Li Yeyun suggested that after the temperature rises and defrosts, the tea farmers can timely lift the soil of the tea tree roots and cover it with hay and soil to prevent it from being frozen again. Adult tea gardens can be covered with non-woven fabrics, shade nets, or straw, etc., and can also be used as covering between straw and floor cloth (film).

For the frozen tea plantation, tea farmers can trim the frozen dead tea branches in time in late February, and pay attention to spring buds to promote budding. Potential recovery quickly. For young tea gardens that have been severely frozen and have died from dead branches of tea trees, they should be replanted in time.

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