摘要
于每kg微酸性土壤(pH6.7)中添加500～2000mg的Al3+,测定各处理pH值、交换性Ca、Mg及有效微量元素Cu、Fe、Mn、Zn含量的变化.结果表明:随着Al3+用量的增加,pH值降低,交换性Ca含量下降,交换性Mg含量增加;添加量为500～1500mg/kg范围时,每增加500mg/kg用量pH降幅分别为0.60、0.78、0.28,但当用量达到2000mg/kg时,pH值下降不明显,与添加量1500mg/kg的处理相比仅降低0.06,而此时有效微量元素Cu、Fe、Zn含量明显增加.从茶树对土壤化学环境的要求、不同添加量所产生的效应以及生产成本三个方面综合考虑,测试土壤中以添加500～1000mg/kg的Al3+为宜.
500-2000 milligrams of aluminum [Al3＋ ] were added to per one kilogram of soil with the slight acid （pH6.7）, then some items of soil were determined, such as pH value, the content of exchangeability calcium/magnesium and the trace element content of Cu, Fe, Mn, Zn in the soil. The result indicated that with the increase of Al^3 ＋ quantities , pH value and the content of exchangeability calcium decreased, but the content of exchangeability magnesium increased. The soil pH value decreased significantly when the range of Al^3＋ quantities was 500-1500mg/kg. The decreasing breath achieved 0.60, 0.78, 0.28.However, pH value decreased unsignificantly （only 0.06） when Al^3＋ quantity was 2000mg/kg, meanwhile, the content of trace element Cu, ice, Zn in the soil increased significantly. The applicable auantitv was 500-1500mg Al^3＋ per one kilogram of soil.
出处
《茶叶通讯》
2005年第3期8-11,共4页
Journal of Tea Communication
基金
山东省教育厅重点项目(J02H04)
山东农业大学博士基金
