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Key points of seedling protection techniques for newly planted early-sprouting tea: improving the survival rate of tea seedlings

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In recent years, Chun'an County has accelerated the pace of developing clonal early-sprouting tea. By early 2007, Chun'an County had planted 53,000 mu of clonal early-sprouting tea (1 mu = 667 sq m, the same below), of which 38,000 mu were in production, and another 15,000 mu still needed strengthened drought resistance and seedling protection, with management aimed at improving the survival rate. Especially for tea gardens planted last winter and this spring, the following seedling protection measures must be effectively adopted. 1. Mulch with grass at the right time. Mulching with grass can preserve water and lower temperature, and loosen the soil; it is a key drought-resistance technique. Cutting grass

In recent years, Chun'an County has accelerated the pace of developing clonal early-sprouting tea. By early 2007, Chun'an County had planted 53,000 mu of clonal early-sprouting tea (1 mu = 667 sq m, the same below), of which 38,000 mu were in production, and another 15,000 mu still needed strengthened drought resistance and seedling protection, with management aimed at improving the survival rate. Especially for tea gardens planted last winter and this spring, the following seedling protection measures must be effectively adopted.

1. Mulch with grass at the right time. Mulching with grass can preserve water and lower temperature, and loosen the soil; it is a key drought-resistance technique. Cutting grass and mulching with grass are best completed before the mold season; if it can be laid earlier, the effect will be better. Mulch each mu of tea garden with more than 1000 kg of grass. Spread it on both sides of the tea rows, with a thickness of more than 10 cm.

2. Weed control to protect seedlings. Weeds in the tea rows compete with tea seedlings for fertilizer and light, so they must be removed in time. They can be pulled out by hand, but the soil must not be disturbed. Weeding is best done around the mold season, and glyphosate must not be used.

3. Apply thin fertilizer frequently. Rooting and leaf growth in the tea garden consume a large amount of nutrients. Although base fertilizer was applied at planting, the tea seedlings could not yet absorb and use it that year, so fertilizer must be supplemented in small amounts and multiple times in time. After the tea seedlings survive, it is generally required to fertilize once every half month. At first, apply 10% clear-water manure. After entering June, apply once a month, with 10 kg of special tea fertilizer or 5 kg of urea per mu, applied in holes dug more than 6 cm away from the tea clumps.

4. Water to resist drought. In the dry season of the dog days, water thoroughly once every half month. The amount of water per mu should be no less than 3000 kg, so as to supplement water in time and keep the soil around the tea roots moist; where conditions permit, it is best to use a sprinkler irrigation machine. Watering and sprinkler irrigation should be carried out before 9 a.m. or after the sun goes down.

5. Prevent and control pests and diseases. Young tea trees are most vulnerable to damage by small green leafhoppers and mites. Once pests and diseases are found, they must be controlled in time. You may choose 35% Saidan at 50-70 ml per mu, or 10% imidacloprid at 15-20 mg, or 20% Simate at 50-70 ml, and spray with water.

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