PP织物袋梯田效益研究

Benefits of Terraced Fields Ridges Built by Polypropylene Geotextile Bags

PP织物袋梯田是陕南秦巴山区一项新的水土保持工程措施。通过定点观测试验,分析和比较了PP织物袋梯田的蓄水保土能力和经济、社会效益,结果表明:PP织物袋梯田与坡耕地比较,能有效提高土壤含水量和养分含量,调水保土、增产增收效益显著;与土坎和石坎梯田相比土壤含水量和养分含量差异不大,但节约投资效益明显。因此,PP织物袋梯田为该区低成本高效益梯田建设和发展提供了一种新的技术途径。

Using PP geotextile bags to build the ridges of terraced fields is a new engineering measure of Qinba mountain areas in south of Shaanxi Province. The paper analyzed and compared the capability of soil and water conservation and economic and social benefits of terraced fields' ridges built by PP geotextile bags through fixed point observation and tests. The outcomes show that a) comparing with slope farmland,it can effectively increase the soil moisture content and nutrient content and the benefits of soil and water conservation and increasing both production and income are remarkable; b) comparing with earth ridge and stone ridge terraced fields,the difference of soil moisture content and nutrient content is not much,while the benefits of investment saving is great. Thus,using PP geotextile bags to build the ridges of terraced fields has provided a new technical approach for the building and development of terraced fields with low cost and high benefit.