休屯盆地典型茶园土壤有机质含量和pH的时空变异

Spatial Variability of the Content of Organic Matter and PH in the Soil of Typical Tea Plantation in Xiutun Basin

选择休屯盆地低山典型茶园,采用5点采样法采集土壤样品,对其有机质、pH和速效N、P进行测定,就不同植茶年对土壤有机质、pH值的时空影响进行相关分析。结果显示,植茶龄36、53年的茶园土壤有机质较对照组(23.64±4.229g.kg-1)高,植茶龄25年的有机质含量(13.53±8.640g.kg-1)低;速效N、速效P的含量与施肥相关;pH变化趋势是植茶龄1-25年茶园呈递减,36-53年的茶园有一定的回升后又下降。

Five dot sampling is used to collect soil samples.And then,the organic matter,pH and available N and P of the sample soil are determined to explore the influence of different ages of tea on the spatial variability of the soil organic matter（SOM） and pH in typical tea plantation of Xiutun Basin.The results show that SOM of 36 and 53-year-old forests is higher（23.64±4.229g·kg-1） than the control group;SOM of 25-year-old forests is low（13.53±8.640g/kg-1）;the contents of N.and P are related to fertilization;1 to 25-year-old forests show a descending tendency of pH;36 to 53-year-old forests reveal an increasing and then a decreasing trend of pH.