土壤坑蚀性实验研究

对采自内蒙东胜、河北张家口、山西离石和湖北通城、秭归等不同自然地理环境区的９２个土壤样，分别进行了其各项物理、化学特性的测定，和崩解、溅蚀、贯入试验，发现不同土类的试验结果与其理化性状之间存在规律性，它们是土壤抗蚀性的反映。文中还对不同土壤的抗蚀性大小进行了讨论。

EXPERIMENTAL STUDY ON RESISTIVITY OF SOILS

Characteristics of soil,degree of rain splash erosion, brokendown and the depth of penetration when they are influenced by experimental studies on splash erosion,of broken-down and penetration of 92 soil samples, collecting from areas, crossing arid, semiarid, semi-humid and humid ones, have been made, and analysis of relationships between physical, chemical properties of soils and these processsed also. The experimental results are mainly as follows:( 1 )There is a correlation of splash erosion volume(SP) to clay grain content of soil(C) CaCO3and organic(O), LogSp =-1.56 0. 276LogC 0. 4 69 LogCaCO3-0. 1 02LogO; ( 2)Relationship between splash erosion and rain duration is more complex, depending on soil types; (3) The depth of penetratiomn increases with moisture and CaCO3,content of the soil, decreases with the clay grain content of the soil ; (4 )Rate of breaking-down is inverse to clay grain, CaCO3, and organic content of the soil, and becomes a little slow as increase of the rain druation ,but there are some differences depending on different soil types. The conclusion is that resistiviity of soils is function of 3 aspects, physical, chemical properties and time process.