共 4 条
- [1] BOWER C. A., 1965, SOIL SCI SOC AMER PROC, V29, P91
- [2] KEMPER W. D., 1959, SOIL SCI, V87, P345, DOI 10.1097/00010694-195906000-00008
- [3] A SOIL SALINITY SENSOR OF IMPROVED DESIGN [J]. SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1966, 30 (03): : 333 - &
- [4] 1954, 60 US DEP AGR HANDB