Timely remedy of famous spring tea after freezing

There are 1.2 million mu of tea gardens in Hunan Province, mainly Bai Miaozao, Qianye Qi, Bixiangzao and other varieties, generally more than-10 ℃ will freeze to death. However, due to the large-scale rain and snow and low temperature freezing, it has brought varying degrees of impact on the tea garden overwintering, especially the tea garden in the mountain area has suffered a more serious freezing disaster. Generally speaking, the branches and leaves of tea trees are frozen, and the trees are affected, which will affect the mining period of famous and high-quality tea in early spring and reduce the yield and quality of spring tea. All relevant tea farmers should take corresponding measures according to the local freezing injury.

For the tea garden where the symptoms of frost injury have appeared on the branches and leaves of the tea canopy, light pruning should be carried out as soon as possible in late February. The degree of light pruning is 5 cm below the cut mouth, or the frozen damage layer should be removed, but the pruning degree should not be too heavy. If the pruning is too heavy, the germination of spring shoots will be delayed even more. Only when it starts early can famous and quality tea be picked early.

For the tea garden with no symptoms of frost injury on the canopy, the period of light pruning can be changed to the middle of May after spring tea instead of light pruning before spring tea, so that spring shoots can germinate earlier and famous and high-quality tea can be picked early.

Appropriately increase topdressing, strengthen soil nutrition, restore tree potential and increase yield. Topdressing before spring tea can be applied to the tea garden from late February to early March, and the tea garden with 15 kg dry tea yield applies 24 kg pure nitrogen per mu.

Foliar fertilization was adopted to improve the ability of cold resistance and promote the vegetative growth of tea trees.