水地粒用高粱节水灌溉模式研究

Study on Water-saving Irrigation Mode of Grain Sorghum in Irrigation Land

为了节约水资源,建立水地高粱的节水灌溉制度。采用随机区组设计,从灌溉方式、灌溉水量、灌溉时期及灌水周期4个方面对高粱的灌溉制度进行了研究,得出了以灌溉方式为中心,结合灌溉水量和灌溉时期及周期的节水灌溉模式。结果表明,应用该模式比传统灌溉在产量相当的情况下,可节约灌溉水44.44%,提高水分利用率11.94%,减少土壤水分下渗率17.2%。

To improve water use efficiency and establish water-saving irrigation system for sorghum,irrigation mode,irrigation water quota,irrigation time and frequency were studied using the randomized block design method.The result shows that in this mode 44.44% irrigation water was saved,water using efficiency increased 11.94%,and the water infiltration rate in soil reduced 17.2%.