【摘要】 以内蒙古呼和浩特市土默特左旗伊利牧场的盐碱地为研究对象,研究了燃煤烟气脱硫副产物对盐碱土的速效磷、速效钾、碱解氮等营养元素的影响.结果表明:盐碱地施用脱硫石膏后对营养元素有一定的影响,速效磷、速效钾、碱解氮与改良前比显著提高,速效磷和碱解氮的变化趋势相似,第二年的含量都高于第一年的,随着时间的持续改良效果显著,速效钾在改良初期明显的增加,之后一直递减,因为没施钾肥,随着植物的利用土壤中钾素递减.盐碱地改良后,施用肥料会提高利用率.更多还原

【Abstract】 It based on Erie pasture saline and alkaline land in Tumed ZuoQi-Hohhot-Inner Mongolia as the research object this paper.And it studied the influences by flue gas desulfurization by-products of coal-fired on available p and available k,alkali-hydro nitrogen nutrient elements in saline alkaline soil.The results show that there is a certain influence on nutrient element after using desulfurization gypsum on saline and alkaline land.The available P,available K,alkali-hydro nitrogen are improved increased significantly than before,the variation trends of available P and alkali solution nitrogen are similar,the content is higher than the first year,the improvement effect is remarkable as time continuous.The content of available k is improved significantly increased in the initial stage.Then it has been decreasing,as plants use it,but no more potassium fertilizer.The improvement of saline and alkaline land will cause the ratio improved of fertilizers utilization.更多还原