摘要
高分子聚合物具有改善土壤结构,增加降雨入渗,调控坡面径流的作用。为探索适合于黄土区应用的高效低廉降雨径流调控新材料,选择聚丙烯酸、聚乙烯醇、脲醛树脂3种高分子聚合物,以不同浓度施入土壤,研究其对土壤物理性质的影响。实验表明:(1)土壤经3种高分子聚合物处理后平均水稳性团粒含量增加17.27%,渗透性能提高41.81%,容重减少11.18%,土壤持水能力较对照提高2.8倍。这说明此3种高分子聚合物均是较好的土壤结构改良剂,尤其是聚丙烯酸效果最为显著。(2)根据3种聚合物不同浓度处理后的综合效果,确定了聚丙烯酸、聚乙烯醇、脲醛树脂的适宜浓度分别为4.8%～6.0%,1.6%,10.0%。
The macromolecule polymers take effect on improving soil structure, increasing soil penetration and controlling runoff on slope. For the purpose of exploring latemodel, efficient and low materials that are taken on controlling runoff for loess region, three polymers are picked out, which are polypropylene acid, polythene hydrin and ureaformaldehyde resin. The effect on soil physical properties by applying polymers of different consistencies on soil are probed into. The results indicate that (1) the content of waterstable dumpling is increased by 17.27%, the soil permeability by 41.81%, the content of containing water by 2.5～3.1 times than antitheses, and the soil destiny is decreased by 11.18% after by polymers treatments in the range of most suitable consistencies. These indexes have proved that the macromolecule polymers are good improvemental matter, especially the effect of polypropylene acid on soil is very marked,(2) the most suitable consistencies of them were ascertained by analyzing synthetical effect treated on soil, which is 4.8%～6.0%,1.6%,10.0% separately.
出处
《水土保持通报》
CSCD
北大核心
2003年第1期42-45,共4页
Bulletin of Soil and Water Conservation
基金
国家863计划项目"雨水高效集蓄利用技术与行走式节水机具"(2001AA242011)
