In order to control soil and water loss of sloping land in Earth-rocky Mountainous Area in North China

and to propose the optimal layout pattern of slope grass belt was put forward

the typical soil limestone parent material developed cinnamon soil in this area was taken as the research object. Under the condition of 9° slope and 90 mm/h rainfall intensity

the indoor artificial rainfall test was used to analyze the layout pattern of grassland filter belt (upslope

downslope

sheet

strip) on the slope The results showed that: (1) The strip layout under the slope could effectively delay the initial runoff generation time of the slope

which was 1.3~1.6 times longer than the other three layout. And the strip layout under the slope could increase the runoff inflow and infiltration of the slope and reduce the runoff generation. As for the cumulative discharge

the upslope > strip > sheet > downslope. (2) The cumulative sediment yield under the arrangements on the slope was 10~23 times that under the arrangement on the slope. The sediment yield under the arrangement on the slope fluctuated obviously with time

and the sediment yield under the arrangement on the slope was 3~35 times that under the arrangement on the slope. The sediment reduction was the best when the grass filter belt was laid under the slope. (3) The layout under the slope could inhibit the development of rill erosion

and the strip layout under the slope could effectively control the number and length of rills

and the benefit of slope protection was the best.