田间持水量可以反应土壤对作物水分的供给状况,通过和土壤结构以及其他土壤水分参数的结合,可以有效监测土壤旱情。但是传统的室内和田间测定方法都较为复杂,为实际土壤墒情监测带来了一定难度。本研究采用优化的沙箱法测量田间持水量,通过对淮北平原的三种代表性土壤进行了试验,结果显示沙箱法对于测定土壤田间持水量具有可靠性和实用性,为土壤墒情的日常监测工作提供了便捷有效的测定手段。 Field water capacity can reflect the supply of soil moisture to the crop and, through combination with soil texture and other soil moisture parameters, can effectively monitor soil drought. However, the traditional indoor and field determination methods are more complicated, which brings some difficulties for the actual soil moisture monitoring. In this study, an optimized sandbox method was used to measure the field water holding capacity. Three representative soils in the Huaibei Plain were tested. The results showed that the sandbox method was reliable and practicable for the determination of soil water content in the field, Monitoring provides a convenient and effective measurement method.