共 31 条
- [1] ATKESON F. W., 1937, Journal of Dairy Science, V20, P557, DOI 10.3168/jds.S0022-0302(37)95712-6
- [3] Bird J. N., 1943, JOUR AMER SOC AGRON, V35, P845
- [4] CALGAN MW, 1950, SCI AGR, V30, P316
- [6] HAM WE, 1946, J AM SOC AGRON, V38, P68
- [7] HATHAWAY IL, 1945, NEB AGR EXP STA RES, V140
- [8] HAUGE S. M., 1934, Journal of the Association of Official Agricultural Chemists, V17, P304
- [10] Johnson HW, 1936, PHYTOPATHOLOGY, V26, P1061