Control Effect of Hedge of Vetiver Grass on RedSoil Sloping Land Erosion
The experiment in control effect of the hedge of vetiver grass on red soil sloping land erosion was conducted during 1997~1999, the results showed that the hedge of vetiver grass could decrease runoff, soil loss and total nutrient loss by 60.1%~72.4%, 56.2%~77.9% and 69.2%~90.4% respectively, and could enhance the critical value of rainfall of causing soil loss by 2.7mm and yearly average peanut yield by 10.3%. In 2~3 years after planting vetiver grass, its effect of conserving soil and water would be close to that of terrace land.