烟气脱硫石膏对滨海农耕土壤磷素形态组成的影响

发布时间：2018-04-22 14:12

  本文选题：烟气脱硫石膏 + 滨海农耕地　； 参考：《生态学报》2017年09期

【摘要】：为探明不同烟气脱硫石膏施用量对滨海农耕土壤中的全磷、有效磷、无机磷组分等的影响,通过田间试验的方式,分别在试验区土壤中施加0t/hm~2、15t/hm~2、30t/hm~2、45t/hm~2烟气脱硫石膏。研究结果表明:与对照组相比,各处理组的土壤全磷含量无显著差异,而土壤中的有效磷和渗滤液中的可溶性磷含量则随着烟气脱硫石膏施入量的增加而降低;施入烟气脱硫石膏后农耕土壤中无机磷含量显著增加,其中又以磷酸钙盐含量的增加为主,磷酸钙盐中的Ca2-P、Ca_8-P和Ca_10-P含量分别增加了30.8%—68.9%、35.2%—66.3%和7.3%—17.8%。烟气脱硫石膏的施用促进了植物的生长发育,有效磷的降低和无机磷组分中磷酸钙盐的增加并未影响到植物对磷素的吸收。因此,烟气脱硫石膏能有效地固定滨海农耕土壤中的溶解态磷,控制土壤过量磷素向水体迁移,降低附近水体富营养化发生的机率,保障区域水体生态系统环境安全。
[Abstract]:In order to find out the effect of different amount of flue gas desulphurization gypsum on total phosphorus, available phosphorus and inorganic phosphorus components in coastal farming soil, 0 t / hm ~ 215t / hm ~ (-1) ~ 230t / hm ~ (2 +) ~ (2) ~ (45) t / hm ~ (2) gypsum was applied to the soil of the experimental area by field experiment. The results showed that there was no significant difference in total phosphorus content between the treatments and the control group, but the available phosphorus in the soil and the soluble phosphorus in the leachate decreased with the increase of the amount of gypsum applied in flue gas desulphurization. The content of inorganic phosphorus in cultivated soil increased significantly after applying gypsum from flue gas desulphurization, and the content of calcium phosphate was mainly increased. The contents of Ca _ 2-P _ (鈪，

本文编号：1787571