燃煤烟气脱硫废弃物及专用改良剂改良龟裂碱土的效果

施用土壤改良剂是在现代化工业的基础上发展起来的有别于传统土壤改良方法的新方法.本文系统分析了利用脱硫废弃物和专用改良剂对宁夏银北龟裂碱土的改良效应,结果表明:施用脱硫废弃物后土壤pH、碱化度降幅很大,容重、机械组成、有机质、养分等理化性状略有改善,加入施用脱硫废弃物和专用改良剂后,土壤容重降低约10%,粘粒含量减少,粉粒、砂粒含量增加;土壤有机质和养分含量、产量都大幅度增加,但考虑改良剂原料费用后则以脱硫废弃物和改良剂Ⅱ配合施用最终经济效益最大.所以该改良剂可以有效改良龟裂碱土.

Effect of Desulfurization Gypsum and Special Soil Amendment for Improvement of Takyr Solonetzs

Applying soil amendment is a new method to improve alkalized soil that based modernized industry is different of typical methods.The field experiment by planting sunflower in takyr solonetzs improved by desulfurization gypsum and special soil amendment in northern Yinchuan of Ningxia; we analyzed the effect of improvementt hat indicated,desulfurization gypsum can decrease pH,ESP,improve physics and chemistry characteristic property of soil such as bulk densit y,texture,organic matter,nutrients,sand and silty content; desulfurization gypsum and special soil amendment can decrease bulk density by 10 percent,increase silt,sandy,soil organic matter,nutrients and crop yield,significantly.Howereve,the last economical efficient of desulfurization gypsum and special soil amendment were highest when the cost of soil amendments were considered.Desulfurization gypsum and specific soil conditioner can effectively improve takyr solonet zs.