我们经历四年,在沿海砂壤土地区,用高效益的多年生的乔、灌、草经济果林作物,进行护坡试验研究,取得了显著效果,同时经济效益也较高。凡采取经济作物护坡措施的试区,因作物对雨水的截流作用和其根部的固土作用,坡面土的年平均流失厚度仅0.59～3.70毫米;而对照区,其沟河坡坍塌严重,坡面土年平均流失厚度达17.2毫米。同时护坡后,沟河坡不倒塌、沟河成形、沟河床不淤积,从而使沟河 We have spent four years in the coastal sandy loam area, with the perennial high efficiency perennial agriculture, irrigation, grass economic forest crops, the slope protection experimental study has achieved remarkable results, but also higher economic benefits. In the trial area where economic crop protection measures were taken, the average annual loss of slope soil was only 0.59-3.7 mm due to the interception effect of crops on rainwater and the soil fixing effect at the root of the slope. However, in the control area, The annual average loss of soil on the slope is 17.2 mm. At the same time after the slope protection, ditch does not collapse, ditch river forming, ditch bed siltation, so that ditch