共 8 条
- [2] EAVIS BW, 1967, 4F39 I AGR ENG S SIL
- [3] EAVIS BW, 1968, 15 P EAST SCH AGR SC, P315
- [4] GINGRICH JR, 1956, AGRON J, V48, P515
- [5] GREENWOOD DJ, 1968, 15 P EAST SCH ROOT G, P202
- [6] LEMON E. R., 1955, SOIL SCI, V79, P383, DOI 10.1097/00010694-195505000-00007
- [7] PETERS D. B., 1957, SOIL SCI SOC AMER PROC, V21, P481