茶树每年都要开花结实， 消耗大量的养分， 导致茶树鲜叶产量减少和品质降低。
Tea tree ( Camellia sinensis) blossoms every year and a lot of nutrients are consumed by itself during blooming and fruiting, resulting in decreased yield and quality of fresh tea leaf.
利用塑料大棚覆盖栽培名优茶具有春茶上市期早、采摘期长、鲜叶产量高、效益好等优点。
The famous excellent-quality tea has the character of "early supplement, long harvest period and high yield of fresh leaf and high benefit" in the spring season, when cultivated in plastic greenhouse.
利用网罩法测定了假眼小绿叶蝉不同虫口密度对茶鲜叶产量及受害指数的影响。在此基础上，建立了不同虫口密度与茶鲜叶经济损失率线性回归方程。
Effect of different densities of Empoasca vitis on the yield loss rate and the damage indexes of fresh tea leaves was evaluated with the net method.
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