共 12 条
[1]
BERG ER, 1982, PUBLICATION COMINCO, V50
[4]
BLAIR GJ, 1979, IFDCT12 INT FERT DEV
[5]
BLAIR GJ, 1984, 1984 P SULF 84 CALG, P717
[7]
FOX R. L., 1964, SOIL SCI SOC AMER PROC, V28, P406
[9]
Tanaka A., 1970, TECH B INT RICE RES
[10]
Till A.R., 1984, P INT C SULPH 84 CAL, P649