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探讨棉花和其它大田作物的自动灌溉系统，是美农业研究局和得克萨斯Dynaznax公司的一项合作研究与开发课题。农业研究局研究了一种系统，在土壤水分不足以满足作物根系需要时自动打开水泵，通过电缆将电脉冲传入地下不同深度的不锈钢探测器上，土壤水分可从脉冲经过探测器的时
The study of automatic irrigation systems for cotton and other field crops is a collaborative research and development project by the Bureau of Agricultural Research and Dynaznax, Texas. The Agricultural Research Service has studied a system that automatically turns on the pump when the soil moisture is not sufficient to meet the root needs of the crop and transmits the electrical impulses through the cable to stainless steel detectors of varying depths underground and soil moisture from the pulse through the detector