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为了研究电厂脱硫废渣(脱硫石膏)对苏打盐碱土理化性质和作物生长的影响,试验采用盆栽的方法,测定不同脱硫石膏施用量对土壤pH值、含盐量和燕麦株高、生物量的影响。结果表明:与对照相比,施用脱硫石膏处理土壤pH值均有所降低;CK1、CK2、CK3、CK4处理土壤的全盐量(EC值)与原始土壤相比分别增加了0.03,0.82,1.28,1.28;当脱硫石膏的施用量为4 500 kg/hm2时,生长期和收割期燕麦株高与对照相比分别增加了41.00%和124.54%,燕麦株干重和根干重分别增加了165.42%和103.90%。说明脱硫废渣可以明显改善苏打盐碱土的化学性质,有利于燕麦的生长。
In order to study the effect of desulfurized waste residue (desulfurized gypsum) on physical and chemical properties and crop growth of soda saline-alkali soil, pot experiments were conducted to determine the effects of different gypsum application rates on soil pH value, salt content and plant height and biomass of oats . The results showed that compared with the control, the soil pH value decreased with the application of FGD. The total salinity (EC) of soil CK1, CK2, CK3 and CK4 increased by 0.03,0.82 and 1.28 , 1.28 respectively. When gypsum application was 4 500 kg / hm2, the plant height and the dry weight of oats increased by 41.00% and 124.54%, respectively, at the growing and harvesting stages, and the dry weight and root dry weight of oats increased by 165.42 % And 103.90%. Desulfurization waste residue can significantly improve the chemical properties of soda saline soil, is conducive to the growth of oats.