共 22 条
[2]
CAVALLI CI, 1975, CIENCIA INVESTIGACIO, V2, P101
[3]
Oyanedel C, 1977, CIENC INVESTIG AGRAR, V4, P33
[4]
PETERSON LA, 1960, P SOIL SCI SOC AM, V24, P205
[9]
SMITH SJ, 1980, CREAMS FIELD SCALE M, P493