【摘要】 采用室内微型土槽模拟垄沟冲刷试验,研究不同SAR、EC及不同灌溉水温对褐土侵蚀量的影响。结果表明,SAR、EC及灌溉水温为沟灌侵蚀重要影响因子。随灌溉水SAR的增大、EC的减小,沟灌侵蚀量呈递增趋势。灌溉水SAR6.0、EC1.0dS/m为影响褐土沟灌侵蚀的SAR和EC临界值;超过此临界值后,沟灌侵蚀量增加效果不显著。灌溉水温为影响沟灌侵蚀的主要因素,随灌溉水温升高沟灌侵蚀量显著减少。更多还原

【Abstract】 The effects of SAR,ECand water temperature on soil erosion of Liaoning cinnamon under furrow irrigation were studied using scour experiment indoor by simulating corrugation in micro soil bin.The results showed that SAR,ECand irrigation water temperature were the important impact factors of soil erosion under furrow irrigation.SARof 6.0and ECof 1.0dS/m were the critical values of soil erosion under furrow irrigation.More than the critical value,soil erosion did not increase obviously under furrow irrigation.Irrigation water temperature was the main impact factor of soil erosion under furrow irrigation.Soil erosion decreased significantly with the increase of water temperature.更多还原