摘要
研究结果表明闽西北山区煤矿污水废渣中的有机碳、含硫、铁物质以及强酸性的废水等是污染危害水田土壤的主要因子，它造成水稻减产甚至颗粒无收。经各种措施治理后，土壤中几种主要危害因子有所减轻，土壤ｐＨ提高０．５－３个单位，全硫降幅达５％－５２％，有效硫降幅达５．３％－７２％，亚铁降幅达１６．２％－７２．５％。水稻产量明显提高，水稻增产幅度达２５．４％－２１４％。
AbstractThe organic carbon,sulphur and iron-containing substances aswell as the strong acids in the waste residue and the sewage water of coalmines were the main causes for the pollution of paddy soils,which resultedin the decrease,or the complete losses,or rice yield.After several measureswere taken,the soil pHs were raised by 0.5-3 units,by 1.5 units on anaverage;the total sulphur was decreased by 5-52%,by 21.3% on an ave-rage; the available sulphur was reduced by 5.3-72%,the average reductionbeing 31.4%;the Fe￣(2+) was decreased by16.2-72.5%,by 43.05%on an a-verage;The rice yield was increased by 25.4-214%,by 92%on the average.
出处
《农业环境保护》
CSCD
1995年第3期120-125,共6页
Agro-Environmental Protection
