交替灌溉方式土壤水分运移及垄体参数初探

交替灌溉作为一种大田作物栽培灌水方式已逐步受到关注。为研究灌水前后水分在垄沟之间的运移及交替灌溉方式适宜的垄高、垄宽等技术参数,试验模拟了交替灌溉不同垄体参数的灌水试验。结果显示,垄背、垄坡、灌水沟和非灌水沟4个观测点同一土壤剖面存在明显的土壤含水量梯度,水分的侧向入渗增强,从而减少了土壤水分发生深层渗漏的几率;交替灌溉方式下,采用15 cm垄高、55 cm垄宽的垄体标准,利于增大地表面积、改善植物生长环境,同时还可使交替灌溉水得到最优分配,达到高效节水效果。

Preliminary Research on Soil-water Movement Characteristics and Ridge Parameter Alternative Furrow Irrigation

As a cultivation and irrigation method for field crops,alternative furrow irrigation has already been paid attention gradually.To study the water redistribution between ridge and furrow before and after irrigation and appropriate height,width and other technical parameters for alternative furrow irrigation,this experiment simulated the irrigation experiment of different ridge parameters of alternation furrow irrigation.The results showed that: at four observation points of ridge back,ridge slope,irrigation ditch and non-irrigation ditch,there were obviously moisture gradient in the same soil profile,respectively,while the occurrence of deep soil moisture probability of leakage reduced because of the furrow water’s lateral infiltration.Using the 15 cm height and 55 cm width ridge,it increased the ridge surface area,and improved the environment of plant growth,and made soil moisture to obtain optimal allocation,and achieved the effect of efficient water-saving irrigation.