促渗剂LSAA对土壤化学性质的影响研究

Effect of Infiltration-enhmncing Material (LSAA) on Soil Physical Properties

近年来,由地表径流引起的面源污染问题正日益凸现,通过向地表土壤施加高分子促渗剂,可以减少径流产生量,削减下游面源污染负荷。本实验研究了利用木质素合成的新型降雨促渗剂(简称LSAA)对土壤化学性质的影响,结果表明添加LSAA可以使供试土壤pH值和碳酸钙含量下降,土壤的阳离子交换量提高30.88%—100.05%,土壤的有机碳含量由0.28%提升到0.47%。

With the gradual development of management and control technology on point pollution, the non-point pollution resulted from runoff has become more and more serious. By altering the soil properties with high polymers can enhmnce the rainfall infiltration and reduce the non-point pollution load. The effect of infiltrationen-hmncing material （LSAA） on the soil chemical properties was studied. The result showed that by adding LSAA thesoil pH and CaCO3 content was decreased, and the cation exchange capacity was increased by 30.88%-100.05%, organic carbon content was enhanced from 0. 28% to 0. 47%.