共 67 条
- [51] Soane B. D., 1970, Institute of Agriculture Engineers, V25, P115
- [52] CHARACTERIZATION OF SOME SCOTTISH ARABLE TOPSOILS BY AGRICULTURAL AND ENGINEERING METHODS [J]. JOURNAL OF SOIL SCIENCE, 1972, 23 (01): : 93 - &
- [53] A GAMMA-RAY TRANSMISSION METHOD FOR MEASUREMENT OF SOIL DENSITY IN FIELD TILLAGE STUDIES [J]. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1968, 13 (04): : 340 - &
- [54] SOHNE W, 1962, LANDTECH FORSCH, V2, P46
- [55] SPRUIJT B, 1974, THESIS U READING
- [56] STIRK G. B., 1958, Soil Science, V86, P133, DOI 10.1097/00010694-195809000-00004
- [57] STURENBURG P, 1959, J AGR ENG RES, V4, P88
- [58] VANDERZAAG DE, 1976, POTATO RES, V19, P37
- [59] WILLIAMS R. J. B., 1961, SOIL SCI, V92, P30, DOI 10.1097/00010694-196107000-00005
- [60] WILTON B., 1963, Journal of Agricultural Engineering Research, V8, P107