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Soil erosion is widespread in the future should be strengthen the protection of grassland, afforestation, reduce the role of gully erosion and sheet erosion; should also note that the full utilization of water resources in the development of irrigated land, and substantial improvements in agricultural irrigation and drainage facilities to prevent flooding disasters.
水土流失现象普遍,今后应加强保护草坡,植树造林,减少沟蚀和片蚀作用;亦应注意水利资源的充分利用,发展水浇地,并大力改善农田排灌设施,防止水患灾害。
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It was also found that the protecting effect of erodents on the coating surface does exist. The protecting effect will be more evident if using erosion efficiency of unit mass erodent of sand in the slurry to describe the erosivity of erodent. Besides a model is proposed to explain the protection process. The wear mechanism of the coating is the co-operation of ploughing, cracking and ablation.
对涂层的SEM分析可知,除冲蚀粒子在涂层表面的犁沟作用,冲蚀磨损的结果造成涂层的表面生成了系列针孔,其中的一部分为溶剂挥发所至,另外还存在由增强颗粒的剥落和裂纹的扩展造成的涂层剥落产生的孔洞,这将可能为水的吸收和扩散造成有利条件,使复合涂层亚表层产生内应力。
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Finger gullying:掌状沟蚀
粘著力 Adhesion | 掌狀溝蝕 Finger gullying | 沼土生成作用 Bog type of soil formation