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水向土中入渗是农田水分循环中一个重要过程.它不仅影响降雨径流,而更重要的是影响农田土壤水分的补给情况,在灌溉条件下,入渗水量及其在土壤中的分配是衡量灌溉用水效率的主要依据.可见,分析研究入渗情况有着十分重要的实际意义.一入渗过程向地表充分供水时,会看到这样一个现象:起初土壤吸收水份的速度很快,随后便逐渐减小,最后可达到某一稳定的速度.土壤这种吸收水分的速度,被称为土壤的入渗速度,或“土壤入渗性”.
Infiltration of water into the soil is an important process of farmland water cycle, which not only affects rainfall runoff, but more importantly affects the supply of farmland soil moisture. Under irrigation conditions, the amount of infiltration and its distribution in the soil are The main basis for measuring the efficiency of irrigation water shows that the analysis of infiltration has a very important practical significance.An infiltration process to the surface of the full water supply, you will see this phenomenon: at first the soil absorb water quickly, then The rate of soil moisture absorption is called the infiltration rate of the soil or the soil infiltration rate.