贵州湄潭地区土壤中钙、镁含量与茶叶生长关系研究

The Relation of Calcium,Magnesium Content with the Growth of Tea in Meitan Area in Guizhou

本文对贵州湄潭碳酸岩分布区岩石、土壤中钙、镁元素含量分布及其对茶叶生长的影响进行了调查研究,结果表明岩石中钙、镁元素的含量决定着土壤中钙、镁元素的含量,土壤中钙、镁元素的含量决定着土壤溶液中Ca2+、Mg2+的含量,并直接影响土壤pH值的高低。调查测试结果还表明,调查区适宜茶叶种植的土壤pH高极限值为6.0,土壤交换性钙不大于6.0cmol/kg、交换性镁不大于1.5 cmol/kg。

In this paper,it studies the content and distribution of rock,calcium,magnesium,the affection to the growth of tea in the carbonate distribution area in Meitan,the result shows the calcium,magnesium in rock decides the calcium,magnesium in the soil,the calcium,magnesium in the soil decides the Ca2＋,Mg2＋ in the soil solution and affects the pH value in soil.The study also shows the pH high limitation of the soil which is suitable for the growth of tea is 6.0,the exchangeable calcium in the soil is no more than 6.0 cmol/kg,the exchangeable magnesium is no more than 1.5 cmol/kg.