摘要
模拟酸雨田间试验结果表明，ｐＨ２．５酸雨处理有明显抑制供试桂香芒秋梢的生长，降低叶绿素含量，加速叶片中的钙、镁、铁、锰、铜、铝等元素淋洗的趋势，同时也能促使供试土壤中钙、镁盐基离子的流失，从而导致土壤ｐＨ值下降，促使锰、锌、铜等重金属微量元素及铝的活化，既阻碍了根系对锌、铁、锰３元素的吸收，又影响根对钙、镁、铜、铝４元素向地上部输送。
The result of field test of 'Simulated Acidic Rain' (SAR) showed that the SAR of pH2. 5 obviously restrained the autumn growth of 'Gui Xiang' mango and lowered the content of chlorophyll of the leaves, speeded up the tendency of leaching loss of elements of Ca, Mg, Fe, Mn, Cu, Al, etc. from the leaves. Besides, SAR promoted the flowing loss of basic ions──Ca, Mg, etc. from the soil in which mango is growing. As a result,the pH value of the soil will be decreased while the activation of Mn, Zn, Cu and Al will be promoted, so as bringing disturbance to the absorption and application of the roots for nutritions.
关键词
模拟酸雨
芒果
生长
土壤
simulated acidic rain
mango
growth
content of chlorophyll
soil
pH
