Recent forecasts predict a cold snap and heavy snow in Anhui Province. To protect Tea gardens from the effects of low temperatures and snow, and to minimize frost damage, the following technical measures are recommended.

01. Further Strengthen Winter Management of Tea Gardens

Regularly inspect tea gardens to check protective measures. If any damage is found, such as damaged facilities or uneven covering, make necessary repairs, add additional coverings, or take other remedial actions. Timely remove accumulated snow from arch-shaped shelters to prevent them from collapsing. For poorly anchored protective structures, especially those that are interconnected, increase the weight of the plastic sheeting and reinforce the posts to prevent strong winds from damaging the structures.

02. Mulching with Straw (Film) and Covering with Straw (Shade Nets)

Mulch the rows between tea plants with straw (film) to increase soil temperature. The ideal thickness of the mulch should be 10 to 15 centimeters, or black mulch film can also be used. Cover the canopy of tea plants with straw (shade nets), ensuring they are not completely sealed so that 30% to 40% of the leaves on the canopy receive direct sunlight. Materials suitable for use include fresh pine branches, rice straw, or black shade nets with 40% light transmission.

03. Erect Winter Protective Arch Shelters

It is recommended to use medium to large-sized arch-shaped shelters, each with a span of 5 to 6 meters, a length of 35 to 45 meters, an arch spacing of 0.7 meters, a top height of 2.5 to 2.7 meters, and a shoulder height of 1.4 to 1.5 meters. These should be covered with 0.08 millimeter polyvinyl chloride film for winter protection.

04. Enhance Post-Frost Damage Management of Tea Gardens

After frost damage has occurred, prune the tea garden when spring temperatures rise. Cut back the frost-damaged branches and leaves, ensuring that all frozen buds and leaves are removed. In mid-March, apply a bud-stimulating fertilizer, using about 30 kilograms of urea per mu (about 0.067 hectares), applied in trenches 10 to 20 centimeters deep. Alternatively, apply specialized organic and compound fertilizers for tea, equivalent to about 15 kilograms of pure nitrogen per mu. By the end of March, spray a foliar fertilizer to promote sprouting of buds and leaves. Use fast-acting nitrogen fertilizers (0.5% to 1.0% urea) or specialized tea plant nutritional liquid foliar fertilizers, applying them to the canopy of the tea plants.

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