引黄灌区不同灌溉强度和灌溉方式对土壤水分和成分的影响  

Effects of different irrigation intensities and irrigation methods on soil moisture and soil composition in Yellow River irrigation area

作　　者：李东阳 LI Dong-yang(Henan Yellow River Survey,Planning,Design and Research Institute Co.,Ltd.,Zhengzhou 450003,China)

机构地区：[1]河南黄河勘测规划设计研究院有限公司,郑州450003

出　　处：《湖北农业科学》2021年第17期27-30,41,共5页Hubei Agricultural Sciences

摘　　要：为提升黄灌区水利工程的灌溉效率,对甘肃省引黄灌区不同灌溉强度和灌溉方式对土壤水分和成分的影响进行研究。结果表明,甘肃省引黄灌区的土壤含水量较低,该区灌溉前0~10 cm表层土壤含水量最高为10.18%,其中表层土壤中6~10 cm含水量较高。随灌溉水量增加,实验区土壤含水量增加。灌溉前,0~2 cm土壤砂粒、粉粒和黏粒的占比分别为2.59%、80.37%和17.04%。随灌溉强度增加和土层厚度增加,实验区土壤砂粒增加,粉粒减少。波涌灌溉减少灌溉水量,提高灌溉均匀度和土壤含水率。In order to improve the irrigation efficiency of water conservancy projects in the Yellow River irrigation area,the effects of different irrigation intensities and different irrigation methods on soil moisture and composition were discussed in the Yellow River irri⁃gation area of Gansu province.The results showed that the soil water content was low in the Yellow River irrigation area in Gansu prov⁃ince.The highest surface soil water content in 0~10 cm before irrigation was 10.18%,and the water content in 6~10 cm was higher.With the increase of irrigation water,the soil water content in the experimental area increased.Before irrigation,the proportion of sand,silt and clay in 0~2 cm soil was 2.59%,80.37%and 17.04%respectively.With the increase of irrigation intensity and soil thick⁃ness,soil sand and silt in the experimental area increased and decreased.Surge irrigation reduced irrigation water and improved irriga⁃tion uniformity and soil moisture content.

关 键 词：引黄灌区 泥沙输移 波涌灌溉 土壤含水率 

分 类 号：TV146[水利工程—水力学及河流动力学]