江苏省典型茶园土壤酸化速率定位研究

通过定位研究的方法,监测了江苏典型茶场代表性茶园土壤pH值、土壤质地、土壤有机质及阳离子交换量等理化性质。结果表明,江苏茶园土壤酸化趋势严重,有67%的茶园0～20cm土壤酸化速率大于0.1个pH单位/年,其中33%的茶园土壤酸化速率大于0.2个pH单位/年,50%的茶园土壤pH低于4。茶园土壤酸化以表土最为严重,且酸化速率显著大于自然土壤。茶园土壤酸化速率的大小与土壤本身的基本理化性质有关。

Localized Monitoring of Soil Acidification Rate of Tea Garden in Jiangsu Province

Through positioning research methods, the representative tea garden soil pH, soil texture, soil organic matter and soil cation exchange capacity of typical tea plantation in Jiangsu province were monitored. The results showed that the 0~20 cm soil acidification rate of 67 percent tea gardens was more than 0.1 pH per year, 33 percent was more than 0.2 pH per year and 50 percent the tea gardens has a pH value much lower than 4. Soil acidification of upper layer is the most serious. The acidification rate of tea garden soil had a significant difference compared with natural soil. Tea garden soil acidification rate had a direct relationship with the basic physical and chemical properties of soil itself.