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一、茶树钾的营养特征钾与氮、磷一样是茶树生长所不可缺少的重要营养元素之一,茶树体内各器官组织中都含有钾,且含钾量比磷高,一般根茎叶全株平均含钾(K_2O_,下同)占干重为1％左右,其中幼嫩芽叶含钾达2.5—3％,一般嫩芽叶中含钾低于2.0％,或老叶含钾低于1％为缺钾的标准。茶树多年生,以采叶为目的,长期在一块地上生长采叶,带走钾亦多,亩产干茶三百斤的,就要带走钢6—7.5斤,钾肥吸收率以45％计算,应施钾13.2—16.5斤,可见茶树需钾量是较多的。
First, the nutritional characteristics of tea potassium Potassium and nitrogen, phosphorus, tea growth is also indispensable one of the important nutrients, all organs and tissues of tea trees contain potassium and potassium content higher than phosphorus, the average root and shoot whole plant average Potassium (K_2O_, the same below) accounted for about 1% of dry weight, of which young shoots of potassium 2.5-3%, generally less than 2.0% potassium leaves of young shoots, or old leaves less than 1% potassium, Potassium deficiency for the standard. Tea tree perennial, with the purpose of picking leaves, long-term growth in a piece of mining leaves, take away more potassium, dry three kilos of dry tea, we should take away 6-7.5 pounds of steel, potassium absorption rate of 45% Should be applied 13.2-16.5 kg of potassium, we can see the tea tree is more potassium.