喀斯特石漠化区不同经营方式下葛藤水保特性研究

Studies on Water Conservation of Pueraria DC Operated by Two Different Modes in Karst Rocky Desertification Areas

本文初步分析了喀斯特石漠化地区坡地和洼地两种不同经营方式下的葛园土壤层和蔓叶层的水保特性。结果表明,种植葛藤后,与对照地相比,无论坡地或洼地的土壤物理特性都得到明显改善。洼地在葛藤+桃树经营方式下,其土壤持水能力及孔隙状况明显优于坡地(种植纯葛),但坡地土壤的抗蚀性能明显强于洼地。试验证明了在石漠化地区,利用藤本植物保持水土,宜依照地形选取合理经营方式。

This paper makes a preliminary analysis on slope and depression operated by two different modes in the garden of Pueraria DC for its water conservation characteristics in soil layer and vine leaf layer in karst rocky desertification areas. Compared with the control, the results show that the soil physical properties of slope or depression after planting vines have been improved obviously. When using in the operation mode of Pueraria DC ＋ peach in depression, its water holding capacity and porosity are obviously superior to slope （planting only Pueraria DC ） , but the soil corrosion performance is obviously strong in depression. Tests prove that liana can be used for water and soil conservation in rocky desertification areas and scientific operational mode should be selected according to the terrain.