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目前使用的多数模拟降雨装置为改变和调整模拟降雨的历时、强度、雨滴的大小分布和动能提供了可能性.这些模拟降雨装置往往体积相当大,移动和操作都较困难,其中多数模拟降雨装置需要的测试小区面积通常在0.5m~2以上.土壤保持规划时,必须测定许多不同土系的土壤可蚀性,同时人们经常想要调查研究不同土壤管理措施对于土壤可蚀性的影响.此外,由于各种土壤条件的空间变异性,在各个土壤或管理单元上进行的模拟降雨测试必须重复4～8次.在这样的条件下,野外调查者往往需要有一种容易搬运和操作的模拟降雨装置.本文介绍的是一种专为土壤保持调查设计的小型简易模拟降雨装置,调查者甚至可用自行车进行携带搬运.它的体积在荷兰瓦赫宁根农业大学研制的一系列模拟装置中堪称最小.这种模拟降雨装置已经完全标准化,因此在一特定土壤或管理单元上获得的测定结果可以与其它地方获得的结果进行比较.这也将为阐明世界各地用模拟降雨装置获得的结果和利用标准田间小区测得的K值之间的关系提供了可能性.
Most of the currently used simulated rainfall devices offer the possibility of changing and adjusting the duration, intensity, raindrop size distribution and kinetic energy of simulated rainfall, which are often quite bulky and difficult to move and operate, most of which are simulated rainfall devices The required area of the test plot is usually above 0.5m2. Soil conservation planning must determine the soil erodibility of many different soil systems and people often want to investigate the effects of different soil management practices on soil erodibility. Due to the spatial variability of various soil conditions, the simulated rainfall test on each soil or management unit must be repeated 4 to 8 times. Under such conditions, field investigators often need a simulated rainfall that is easy to handle and operate This article presents a small, easy-to-simulate rainfall unit specifically designed for soil-holding surveys that can be carried by a bicycle even by a bicycle and whose volume is described in a series of simulations developed by the Wageningen Agricultural University in the Netherlands Minimum. This simulated rainfall unit has been fully standardized, so in a specific soil or management unit The measurement results obtained can be compared with results obtained elsewhere. This will also provide the possibility to clarify the relationship between K values around the world obtained by the simulation results and rainfall device using standard field plot measured.