凌云县茶园土壤养分状况及合理施肥对策研究

为了掌握凌云县茶园土壤肥力状况,从全县有代表性的茶园中采集土壤样品30个,对评价茶园土壤肥力的12项重要指标进行了测定。结果表明,凌云县茶园土壤pH值适宜茶树生长,有机质含量较高,土壤全氮和速效氮含量较高,速效磷和速效钾普遍缺乏,除有效铜外,微量元素较缺乏。在茶园养分管理上,要多施有机肥,减氮增磷钾,兼顾中微量元素的平衡。

Nutrient Status of Tea Garden Soil in Lingyun County and Rational Fertilization Countermeasure

In order to study the nutrient status of the tea garden soil of Lingyun County,30 soil samples were collected from the representative tea garden of Lingyun County,and 12 important soil fertility indexes were determined.The results showed that the pH value was suitable for growth of tea,and the organic matter content was relatively high in tea garden soil.The total nitrogen and water-soluble nitrogen content was relatively high but the contents of available phosphorus and available potassium were low.The content of secondary-micro elements was low except available copper.According to the soil nutrient status,it was recommended to increase the rates of organic,phosphate and potassium fertilizers,decrease the rate of nitrogen,and keep the balance of secondary-micro element fertility.