黄土丘陵区不同下垫面降雨产流与蓄水窖工艺技术

Runoff from different rain harvesting surfaces in hilly areas and techniques for building water cellars

在山西洪洞建立了农膜、公路、农田小路、农田下垫面产流场,对不同下垫面的降雨产流量及蓄水窖主要工艺技术体系进行了研究。结果表明:在观测的27次降雨中,在同一坡度、同一降雨量条件下,不同下垫面的产流量存在较大差异。农膜、公路、农田小路和农田下垫面的产流量分别占总降雨量的81.4%、73.6%、41.6%、2.7%。表明前三者均有较好的集水效果,而农田产流效果较差。研究提出的蓄水窖主要工艺技术体系经大面积示范收到了较好的效果。

Rain harvesting surfaces with plastic mulch, highway and country road surfaces and crop field were constructed to investigate water harvesting efficiency in Hongtong, Shanxi provienc. Runoff from different water harvesting surfaces and techniques for building water cellars were discussed. The results showed that runoff from different surfaces were different under the same rainfall condition, from 27 times of observed rainfalls. The runoff from plastic mulched surface, highway, country road and cropped land were 81.4%, (73.6%), 41.6% and 2.7% of rainfall respectively. The former three rain havesting surfaces are good enough for water harvesting. Techniques for the construction of water cellars were described.