不同结构土壤间歇入渗减渗效果的试验研究

Experimental Study of Reducing Infiltration Effects under Surge Infiltration in Different Soil Structures

本文以陕西关中田间连续和间歇入渗对比试验为依据,讨论了中壤质地土壤不同结构条件下的间歇入渗减渗效果,分析了间歇入渗的减渗率与地表土壤容重及连续入渗相对稳渗率之间的关系。可供中壤质地土壤地区进行间歇灌大田灌水试验和用水管理作参考。

In this paper, based on the field single-point infiltration experiments of surge flow irrigation and continuous flow irrigation at GuanZhong, Shaanxi, reducing infiltraion effects of surge infiltration in the soil which has the same soil texture (middle loam texture) but dif- ferent soil structures are discussed. Relations between reducing infiltration ratio and surface soil specific weight, also between reducing infiltration ratio and relatively stable infiltration rate are analyzed. The results in this paper can be consulted in field experiments and man- agements of surge border irrigation in these distracts where the soil conditions are similar to the ones diseribed above.