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防止大田地下盐水上渗的关键在于,当它尚未渗到地面损害作物之前就已检测出来。用四电探针法进行早期检测,可以测定地下水的深度、广度,以及盐渍化程度。另一种检测渗出水的地球物理方法是用地震仪。地震仪能把地下不透水层的冲
The key to preventing infiltration of underground salt water in the field is that it has been detected before it penetrates the ground and damages the crop. Early detection with the four-probe method can determine the depth, breadth, and degree of salinization of groundwater. Another geophysical method of detecting effluent water is seismographs. Seismograph can be underground impermeable layer of red