共 13 条
- [1] CROSBY FL, 1970, 66 U GEORG COLL AGR
- [3] DOWNEY DA, 1973, 784 ARK AGR EXP STN
- [4] DUSEK DA, 1971, 973 TEX AGR EXP STN
- [6] GRISSON P, 1955, 531 MISS STAT COLL A
- [7] MATSON ARNOLD L., 1964, AGRON J, V56, P552
- [8] SALTER PJ, 1967, CROP RESPONSES WATER, P13
- [9] SCHWAB GO, 1958, 458 IOW STAT U AGR E, P245
- [10] SOMERHALDER BP, 1960, NEBRASKA EXP STN SPR