| 模拟酸雨对山东主要土壤类型理化性质的影响 |
| 摘要点击 1004 全文点击 2143 投稿时间：1996-11-13 |
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| 中文关键词 模拟酸雨 土壤pH 土壤电导率 土壤盐基 盐基离子 水壤活性铝 淋洗水柱试验 土壤改良 |
| 英文关键词 simulated acid rain simulated earth volume test physical and chemical properties of soil active aluminium |
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| 中文摘要 |
| 以pH2、3、4、5的模拟酸雨,对山东省棕壤、褐土、潮土、砂姜黑土、盐渍土等5种土壤进行1-10a室内淋洗土柱试验。结果表明,除棕壤在pH2的模拟酸雨淋洗第4a开始酸化以外,其余4种土壤10a淋滤液pH值均大于7;模拟酸雨淋洗土壤10a,土壤淋失盐基总量是褐土>砂姜黑土>盐渍土>潮土>棕壤;盐基离子对酸雨的敏感性为Ca2+>Mg2+>K+、Na+;模拟酸雨对土壤中铝的活化作用是除棕壤pH2出现活性铝外,其余土壤均未出现。对酸化棕壤施用CaO进行改良,效果明显。 |
| 英文摘要 |
| Five types of soils i.e.brown earth, cinnamon soil,chao soil(cultivated fluviogenic soil),lime concretion black soil,salt-affected soil were leached by earth volume test with simulated acid rain of which the value of pH are 2、3、4、5,separately from one year to ten years.The results showed that the pH values of the leacheated four soil types which had been leached for ten years are more than 7, except the brown earth which become acid under pH2 in the fourth year. The total losses of the leached base ions are:After ten years leaching,lime concretion black soil>salt-affected soil>chao soil>brown earth. The sensitivity of base ions to acid rain are :Ca2+ >Mg2+ >K+、Na+. The simulated acid rain has activation to the aluminium in the soils. There is no active aluminium in the four typyes of soils except the brown earth which the active aluminium appears in pH2. It has obvious improvement effect to apply lime to the acid brown carth. |
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