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农田土壤冲蚀自古以来就是全世界的社会问题.虽然对土壤流失的机理和防护已进行了大量的研究,但想找到一种通用的控制土壤冲蚀的方法是很困难的,这是因为影响土壤冲蚀的因素不同.因此,为了了解影响土壤冲蚀因素的复杂性和用公式表示与局部条件一致的某种实际冲蚀控制的量度,有必要对冲绳北部土壤冲蚀进行广泛的研究.分析成果汇总如下国头马路土壤的物理特性变化很大,并且容易受降雨冲蚀.根据现场和实验室测得的土壤流失量,考虑坡度的影响导出经验公式q=C(tan(θ-θ_0)~(1/2))式中,q为土壤流失量,t/ha;θ为坡角:C,θ_0为常数.为了描述土壤流失水平,就裸地来讲,需要坡度小于1.5°,对于改善津格阶地,控制土壤流失和存贮灌溉用水是有用的.
Soil erosion in farmland has been a social problem in the world since ancient times, and although a great deal of research has been conducted on the mechanism and protection of soil erosion, it is difficult to find a universal way to control soil erosion because of the effects Therefore, in order to understand the complexity of soil erosion factors and to formulate a measure of some actual erosion control consistent with local conditions, it is necessary to conduct a comprehensive study of soil erosion in northern Okinawa. The results of the analysis are summarized as follows: The physical properties of soil in Guotoumao Road vary greatly and are easily affected by rainfall erosion.Experimental formula q = C (tan (θ-θ_0) is derived from the influence of slope on the basis of the soil loss measured in the field and laboratory. ) ~ (1/2)) where q is the soil loss, t / ha; θ is the slope angle: C and θ_0 is a constant. To describe the soil erosion level, It is useful to improve Jinger terrace, control soil erosion and store irrigation water.