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为了解保水剂施入土壤后对土壤性质的影响,促进保水剂在抗旱节水中的合理应用。在河北农业大学实验基地,对青海“绿宝”公司提供的3种剂型保水剂施入土壤后的混剂土进行土壤水分常数、密度、pH值、土壤膨胀率和土壤硬度等性能测定。结果表明:保水剂能显著提高土壤中的土壤水分常数和土壤孔隙度,但混剂土的土壤密度减小;保水剂能明显提高土壤的膨胀性能65%~170%;保水剂加入土壤后对土壤的pH值影响较小;在土壤大量失水后,保水剂能明显降低土壤坚实度,对照土壤的硬度是混剂土硬度的5.2~32.9倍。
In order to understand the influence of SAP on soil properties, and to promote the reasonable application of SAP in drought and water conservation. In the experimental base of Hebei Agricultural University, the soil moisture constant, density, pH value, soil expansion rate and soil hardness were measured on the mixed soil after the three dosage forms of water retaining agent provided by Qinghai . The results showed that: the water-retaining agent can significantly increase the soil moisture and soil porosity, but the soil density of the mixed soil decreases; water-retaining agent can significantly improve the soil swelling performance of 65% to 170%; Soil pH value less affected; After a large number of soil water loss, water retention agent can significantly reduce the soil solidity, the control soil hardness is mixed with the hardness of 5.2 to 32.9 times.