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本研完的目的是确定是否在早期研究的非耕作处理中存在大孔隙,如果有,大孔隙对非耕地的渗透率及氯化物的流动有多大影响。在传统耕地和非耕地两种处理中,施入化合物立即降10mm小雨时C1-的渗透均能减少约一半,这时由于最初的10mm降雨,使氯化物有机会扩散到土壤的不流动区域,结果使这些氯化物不能在大孔隙中和紧密空间之间流动。当化合物施入非耕地表土后不久降雨160mm时,大孔隙会导致最大渗透损失。
The purpose of this study was to determine if there were macropores in earlier studies of non-tillage treatments and, if so, how much the macropores affected the non-cropland permeability and chloride flux. In both conventional and non-cultivated treatments, the penetration of C1- can be reduced by about half as soon as the applied compound drops 10 mm of light, at which point chloride is given the opportunity to spread to the non-flowing area of the soil due to the initial 10 mm of rainfall, As a result, these chlorides can not flow between macropores and tight spaces. Macropores result in the greatest loss of penetration when rainfall 160mm shortly after application of the compound to non-cultivated topsoil.