多功能高分子固沙剂流动沙丘固定试验研究

试验选择在甘肃省武威市民勤县绿洲外缘与沙漠交接地带,应用多功能高分子固沙剂进行流动沙丘固定试验研究。结果显示,在试验区斜坡下部,除草试验区比对照区结皮厚度增大81.25%,未除草试验区结皮比对照厚度增加32.25%,固沙结皮区比无结皮区抗风蚀,至今固沙结皮依然存在;未除草有结皮时固沙试验区0~80cm各层平均含水率均比对照区高,其中土层平均含水率比对照区高76.27%。实验证明施用试剂不仅固沙效果非常明显,而且在不除草时对土壤水分有很好的保持效果。

Fixation of Moving Dune by Multi-Functional High Polymer Reagent

The study area is located at the edge of the Minqin Oasis in Gansu Province, neighboring to the Tenger Desert and the Badain Jaran Desert. The multi-functional high polymer reagent was used to fix the moving dunes of this area in experiment. As a result, comparing to the control one, the thickness of soil crust at the same position in the weeded experimental area and the unweeded experimental area increased 81.25% and 32.25%, respectively. The dune with crust was more resistant to wind erosion than that of the control one. Besides, the average moisture content of the soil layer between 0~80 cm in the unweeded experimental area was 76.27% higher than that of the control one. This experiment proved that this kind of reagent is not only effective in fixing dunes, but also has effect in increasing the moisture content of sand layer.