共 14 条
- [1] BECKER WR, 1955, VERSL CENT I LANDBOU, P171
- [2] BECKER WR, 1954, VERSL CENT I LANDBOU, P113
- [3] BUNTING E. S., 1957, Journal of Agricultural Science, V48, P447, DOI 10.1017/S0021859600032974
- [5] DIJKSTRA ND, 1960, VERSL LANDBOUWK ONDE
- [8] HESLOPHARRISON J, 1961, P LINN SOC, P108
- [9] KIESSELBACH TA, 1950, 166 NEB AGR EXP STN
- [10] Lehenbauer, 1914, PHYSIOL RES, V1, P247