共 13 条
- [3] FOLKINS L. P., 1961, CANADIAN JOUR PLANT SCI, V41, P188
- [4] JACKOBS J. A., 1955, AGRON JOUR, V47, P169
- [5] KUST CYRIL A., 1961, CROP SCI, V1, P267, DOI 10.2135/cropsci1961.0011183X000100040011x
- [6] LANGILLE J. E., 1962, CANADIAN JOUR PLANT SCI, V42, P611
- [7] LANGILLE J. E., 1961, CANADIAN JOUR PLANT SCI, V41, P693
- [8] LAW A. G., 1955, AGRON JOUR, V47, P323
- [9] MCKENZIE R. E., 1951, Scientific Agriculture, V31, P457
- [10] SMITH D, 1962, FORAGE MANAGEMENT NO