Study on the effect of different densities of silage corn to the leaf area, dry matter and fresh yield of both single plant and population in 2002~2003.

通过2002～2003年对青贮专用型玉米不同种植密度下，单株和群体叶面积、干物质积累及单位面积生物产量变化的研究，探讨单株和群体之间的相互影响。

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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.

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。

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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。

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