江苏茶园土壤环境质量现状分析

通过对江苏20多个典型茶场的调查取样,分析了江苏典型茶园的土壤肥力和环境质量状况。结果表明,江苏茶园土壤总体肥力状况良好,少数茶场的土壤有机质含量偏低。茶园土壤施用的有机肥中,菜饼肥有机质含量较高,养分组成合理,重金属含量低,适合茶园长期施用。在茶园施肥管理方面,普遍存在有机肥施用时间偏晚的现象。此外,江苏茶园土壤存在较明显的酸化现象,且有加重趋势。个别茶场的土壤中Pb含量超标需引起重视,否则会导致茶叶中Pb含量超标而影响茶叶质量的安全性。

Analysis on current status of soil environmental quality of tea gardens in Jiangsu Province

Based on two years field research, the soil fertility and the soil environmental quality of typical tea gardens in Jiangsu Province were analyzed. The results show that the tea garden soils are generally fecund, but the soil organic matter content is appreciably low in some tea gardens. Among the fertilizers applied, the rapeseed meal is of reasonable nutrient composition, high organic matter content and low heavy mental content, so it is the best organic fertilizer for a longterm application in tea gardens. In the regular management of tea gardens, the fertilization is usually delayed 1 - 2 months. Acidification is serious in the majority of tea garden soil, moreover, the lead content of soil exceeds the standard in a few areas. The high lead content of soil can cause the lead content in tea to exceed the standard, thus influencing the safety of tea quality.