共 25 条
- [1] AINA PO, 1977, SOIL EROSION PREDICT, V21, P75
- [2] ALLEN W, 1965, AFRICAN HUSBANDMAN, P94
- [3] Allison LE, 1965, AGRONOMY MONOGRAPHS, V9, P1367
- [5] BREMNER J. M., 1960, JOUR AGRIC SCI, V55, P11, DOI 10.1017/S0021859600021572
- [6] CARLSON C. W., 1961, SOIL SCI SOC AMER PROC, V25, P44
- [7] Day PR., 1965, METHODS SOIL ANAL 1, Vagronomymonogra, P545
- [9] ENGELSTAD O. P., 1961, SOIL SCI SOC AMER PROC, V25, P497
- [10] FLOYD B, 1965, NIGER GEOGR J, V7, P91