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本文用人工模拟降雨法和田间实测法对比研究了我国亚热带七种有代表性土壤的可蚀性,结果表明,两种方法测得的土壤可蚀性K值都以红砂岩发育的(耕作)铝质湿润淋溶土和紫色砂页岩发育的紫色湿润雏形土为最高,最低的是第四纪红色粘土发育的红色湿润新成土。本文还对每个供试土壤分别建立了这两种条件下求得K值间的定量关系,为今后利用人工模拟降雨试验开展各种研究提供了基础。
In this paper, the erodibility of seven representative soils in subtropical China was compared by simulated rainfall and field measurements. The results show that the values of soil erodibility K measured by the two methods are all developed by red sandstone (tillage) The highest percentage of purple wet-formed soil was developed for aluminum-bearing leaching soils and purple sand shale. The lowest was the red, moist, fresh soils developed in Quaternary red clay. The quantitative relationship between the K values obtained under these two conditions was also established for each of the soils tested, which provided a basis for the future research on artificial rainfall simulations.