The Slope Protection Research Of Three Mixed Grasses Planting Vegetation Of Different Proportions

It has become a trend to construct economic and ecological benefits of coordination "ecotype" Highway, with the construction of ecological civilization written in eighteen report. We researched the slope performance of mixed Smooth bromegress, Wheatgress, Bahuria wildryegress in different proportions at semi-arid plains of roadside lake Tumochuan Hasuhai Inner Mongolia and provided scientific theoretical for bio-engineering slope protection in the northern arid and semi-arid areas of soil erosion. The test set up seven processing, including three grass unicast processing, Smooth bromegress, Wheatgress and Bahuria wildryegress mixture processing with 1:1;1,2:1:1,1:2:1 and 1:1:2.We researched the ecological adaptability,prevent soil erosion, landscape benefit..We carried on the significance analysis using variance analysis and comprehensive analysis using analytic hierarchy process.All treatments tested emerging time、emerging rate、drought tolerac、over-wintering rate、speed in covering and time、height of grasslaye、density、coverage、above-ground biomass、 Interception effect of stem and leaf、below-ground biomass、rain erosion、uniformity、 weed status、green degree、green stage.Results indicate that the process of Smooth bromegress,Wheatgress and Bahuria wildryegress mixture processing with 1:1:2 is better than the others. The grass seeds of the process have high understanding, suitable the entironment of drought, cold and soil salinity in northern, planting fast, high tillering ability, high coverage, high root content, and the soil and water conservation benefit is remarkable. That process is an excellent combination to protect the slope.