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