Analysis of the Accuracy of an FDR Sensor in Soil Moisture Measurement under Laboratory and Field Conditions

Table 1

Soil particle size distribution for soils sampled at different locations, in April and May 2018.

Locations	Longitude	Latitude	Altitude	Sand; (>0.05 mm)	Silt; (0.002–0.05 mm)	Clay; (<0.002 mm)	Soil texture
Huixian county	35° 30	113° 41	94 m	95.2%	4.8%	0	Sand
Yuanyang county	34° 59	114° 03	86 m	53.4%	41.2%	5.4%	Silt sand
Yanjin county	35° 14	114° 15	69 m	45.7%	28.6%	25.7%	Sandy loam
Muye district	35° 20	113° 46	73 m	41.1%	34.8%	24.1%	Silt loam
Hongqi district	35° 07	114° 10	71 m	37.3%	35.9%	26.8%	Silt loam
Changyuan county	35° 10	114° 41	62 m	17.7%	43.8%	38.5%	Loam clay
Qinyang county	35° 04	112° 55	126 m	8.8%	35.1%	56.1%	Clay