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用不同酸度的模拟酸雨对棕壤进行室内的淋洗试验。结果表明，ｐＨ≥４的酸雨连续淋洗１０年，淋滤液的电导率、ｐＨ和盐基离子淋失量与对照相比差别不大；ｐＨ３的酸雨可对电导率、ｐＨ和盐基离子产生明显影响；ｐＨ２的酸雨从第４年开始，淋滤液的氢离子浓度增加１０４倍以上。第１０年的电导率和盐基淋失１０年累积总量分别为对照的１８．０６和７．１２倍；４种模拟酸雨均可使土壤阳离子代换量下降；ｐＨ２的酸雨１０年淋失活性铝１３．３０ｍｇ／１００ｇ土。
Indoor acid leaching test of brown soil with simulated acid rain of different acidity. The results showed that the acid rain of pH≥4 continuously leached for 10 years, the leachate conductivity, pH and salt-base leaching loss were not significantly different from the control; acid rain of pH3 could affect the conductivity, pH and salt-based ion production Significantly affected; pH2 acid rain from the fourth year, the leachate hydrogen ion concentration increased 104 times. The first 10 years of total leaching and conductivity of 10 years were 18.06 and 7.12 times of the control respectively. Four kinds of simulated acid rain decreased soil cation exchange capacity. Acid rain of pH2 ten years Active aluminum 13.30mg / 100g soil.