钾是植物所有组成成份中的第一要素,与几乎所有的植物生理现象有联系。钾能调节水势、色素合成、蛋白质台成和酶活性。在茶树成熟叶片组织中有效的矿质元素K仅次于氮,合计占干物质的1.5—2.0％。这样高水平的含量说明它对生理功能的重要性。我们许多N、K肥的田间试验,主要是检查产量,没有进行抗旱、抗寒、叶绿素含量等生理基础研究。 Potassium is the first element in all plant components and is linked to almost all plant physiology. Potassium can regulate water potential, pigment synthesis, protein synthesis and enzyme activity. The effective mineral element K in mature leaves of tea plant is second only to nitrogen, accounting for 1.5-2.0% of dry matter. Such a high level of content shows its importance to the physiological function. Many of our N, K fertilizer field trials, mainly to check the yield, no drought, cold, chlorophyll content and other physiological basis of research.