Shading with planting trees in tea garden, light intensity was obviously reduced by 30～40%, scattering increased 6～15%; air temperature was enhanced 0.5～2℃ in winter and spring seasons, but decreased 0.5～4℃ in summen absolute content of soil water and reletive aci moistmre were 17～40% and 2～20% higher respectively. Tea bushes covered with plastic film produced the similar influence to shading, resulting in a benefit of 7～10 days ahead for teapicking.
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