中文摘要：

通过辽西褐土区田间沟灌试验，研究不同灌水流量、垄沟长度与土壤初始含水率对沟灌侵蚀的影响，基于灌溉径流推进过程，运用水量平衡法计算土壤人渗参数。结果表明：研究区域土壤人渗参数K和a值分别平均为0．00209与0．7851；相对干燥土壤人渗速率初始值较高，人渗速率随灌水历时下降迅速；随灌水流量增加，径流量与侵蚀量均明显增加；垄沟越长，径流量与侵蚀量越低，沟长与径流量呈指数关系；初始含水率较低时，虽土壤颗粒易受径流剥蚀，但垄沟末端沉积现象明显，土壤颗粒输移距离较短，径流量与侵蚀量较低；灌水流量为0．5～1．0L／s时，单次灌溉引起的侵蚀量为7．46～391．46t／km^2。

英文摘要：

This paper researched furrow irrigation erosion affected by different furrow lengths and initial wa- ter contents by field irrigation experiment on western Liaoning cinnamon soil area, and estimated soil infiltra- tion parameters according to the process of flow based on the principle of water balance. The results showed that. When the initial soil water content was lower correspondingly, total amount of runoff and erosion amount was lower, then initial value of infiltration rate was higher, although the infiltration rate decreased rapidly, the cumulative infiltration was still higher. When the furrow was longer correspondingly, total amount of runoff and erosion amount was lower, and the furrow length and runoff were exponential relation- ship, erosion of single irrigation was 7.46-391.46 t/km2 , the amount of furrow irrigation erosion in differ- ent irrigation flow lengths as 30, 45, 60 m were 89. 49 - 391. 46 t/kin2, 36.96-73.04 t/kin2 and 7.46- 19.28 t/kinz respectively, the soil infiltration parameters K and a were 0. 002 09 and 0. 785 1 respectively.