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为探讨亭子口库区农田防护工程低地垫高方案的可行性,利用室内大型土柱,对该方案的保水保土问题进行了试验研究。试验采用了不同土壤质地、不同土壤厚度、不同压实度、不同垫层、不同灌水量等共计24组方案,结果表明,经过一定的压实,低地垫高方案土壤保水性能能够达到或好于天然状态;不会出现细颗粒流失问题,耕作层厚度0.7 m能够满足保水保土要求。
In order to explore the feasibility of the low ground padding scheme for farmland protection engineering in Tingzikou reservoir area, the large-scale indoor soil column was used to test the water and soil conservation of this program. The experiment adopted 24 groups of programs with different soil texture, different soil thicknesses, different compaction degrees, different cushion layers and different irrigation amounts. The results showed that after a certain compaction, the soil water holding capacity of the low ground padding scheme can reach or better than Natural state; there will be no loss of fine particles, tillage layer thickness of 0.7 m to meet the water and soil requirements.