In response to the current unfavorable climate, the Provincial Department of Agriculture experts have developed a series of easy-to-understand, detailed and operational methods for tea garden management:
1. Tea plantation grass. The temperature of the grass garden can be increased by 1-2 °C, which can reduce the extent and depth of the frozen soil and maintain the soil moisture.
2. Cover the cold. Before the cold wave comes, cover the tea tree surface with straw, weeds, shade nets, etc. to protect the tea trees.
3. Spray water to wash the cream. These equipments can be used with water sources and sprinkler irrigation equipment to spray water when the night frost is harmful, and wash the frost attached to the leaves.
4. Smoke and smoke. Before the night frost, according to the wind direction, terrain, area, the temperature will drop to about 2 °C when the smoke is ignited to reduce the night frost damage.
Technical measures for freezing damage are:
1. Pruning. For the tea plantation with frostbite coke and tea leaves with good picking surface, light pruning is used to clean the surface of the canopy to facilitate the germination of the tea bud; for the tea tree to produce frost damage, deep pruning should be carried out; for the serious damage, it should be carried out. Heavy trim or table.
2. Shallow tillage and fertilization. After the frozen tea tree is trimmed and the temperature is raised and trimmed, the quick-acting fertilizer and the foliar fertilizer, such as ammonium sulfate and urea, should be added in time, and a certain amount of phosphorus and potassium fertilizer should be applied. The fertilization should be applied a small amount several times.
3. Nursery rescue. For the nursery that has been removed from the sunshade before wintering, you can re-cover the shade net or lay grass on the tea seedlings. When laying the grass, you can avoid branching, avoid too thick and too thick, and see the cuttings in a vague way; Cover the grass directly on the sunshade net or cover it with a film. The film cover requires four sides to be buried in the soil to form a closed small environment to reduce the impact of frost or wind on the tea seedlings.
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