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山地茶园覆草效应的研究汲长岁（山东省莒南县果茶中心）高家沟山地茶园，无灌溉条件，近４年年平均降水量为６３０ｍｍ，年降水量小于年蒸发量（４５０ｍｍ）与径流量（２５０ｍｍ）之和，茶树生长势弱，经济效益差。为了研究旱地茶园的覆草效应，１９９１～１９９４年对...
In the recent 4 years, the annual average precipitation is 630mm and the annual precipitation is less than the annual evaporation (450mm) And runoff (250mm) and the sum of tea growth is weak, poor economic efficiency. In order to study the mulching effect of tea plantations in the dry land, 1991 ~ 1994 ...