共 13 条
- [1] Bohm W., 1974, Zeitschrift fur Acker- und Pflanzenbau, V140, P282
- [2] BOHM W, 1977, AGRON J, V69, P415
- [7] RAZC GL, 1964, CAN J SOIL SCI, V44, P100
- [8] A COMPARISON OF 3 METHODS FOR ESTIMATING ROOT LENGTH [J]. AGRONOMY JOURNAL, 1970, 62 (04) : 451 - +