杂交狼尾草水土保持能力的实验研究

Study of Pennisetum pureum on Function of Soil and Water Conservation

杂交狼尾草是一种优良的多年生禾本科牧草,具有很好的水土保持能力,但人们对其水土保持方面的定量研究较少。通过对杂交狼尾草草地植被的持水能力、土壤水分变化、土壤抗冲性、渗透性等指标的研究,探讨杂交狼尾草的水土保持能力。结果表明:杂交狼尾草的持水能力强,能明显增加土壤水分含量,提高土壤的抗冲性、渗透性,在三峡库区的水土保持工作中有着广阔的应用前景。

Pennisetum pureum is a perfect kind of grass with excellent soil and water conservation property. However, few quantitative studies on its soil and water conservation have been done. To probe into the effects of Pennisetum pureum on soil and water conservation, the capability of water conservation in the vegetation,the content of water in the soil, soil anti-scouribility and penetrability are measured. The result shows that Pennisetum pureum is strong on the capability of water conservation in the vegetation can improve such soil features and enhance the content of water in the soil greatly; so it can be widely used for soil and water conservation purpose in the area of Three Gorges.