【作者】 李世瑶； 高昌珍；

【Author】 Li Shiyao,Gao Changzhen (Engineering and Technology College of Shanxi Agricultural University,Taigu,Shanxi, 030801,China)

【机构】 山西农业大学工程技术学院；

【摘要】 沟灌和畦灌后,耕作层土壤因遇水膨胀和失水收缩产生的裂缝加速土壤水分的蒸发是节水灌溉学科急需解决的问题之一。基于沟灌和畦灌、翻埋秸秆和未翻埋秸秆对比试验,运用SAS分析软件分析了不同灌溉条件下的土壤裂缝特征参数,结果发现:在不添加秸秆条件下,沟灌和畦灌土壤裂缝情况差异不显著;添加秸秆的条件下,畦灌有显著的抑制效果;沟灌除了裂缝裂隙度不显著外,裂缝地表裂隙度、裂缝比内表面积显著;畦灌的抑制效果比沟灌的要好。更多还原

【Abstract】 The plough layer appear Soil Cracking because of soil water swelling and drying shrinkage after surface irrigation.It is one of the urgent problems of Water-saving irrigation discipline because it can acceleration soil moisture evaporation.Compared with straw and no straw test Based on furrow and border irrigation,used SAS analysis software to analyzed the soil under different irrigation conditions characteristic parameters of crack.The results show that: under the condition without straw,furrow and border irrigation,soil cracks is no Significant difference;add straw,it can inhibition soil crack of border irrigation significantly;furrow irrigation except crack porosity has no Significant difference,crack porosity on the soil surface and specific internal area of soil crack have Significant difference;The inhibitory effect of border irrigation is better than furrow irrigation.更多还原