共 12 条
[1]
BOAWN LOUIS C., 1964, SOIL SCI SOC AMER PROC, V28, P229
[3]
JACKSON TL, 1967, P AM SOC HORTIC SCI, V91, P462
[5]
OLSEN S R, 1972, P243
[6]
PARIBOK TA, 1965, SOV PLANT PHYSIOL, V12, P514
[8]
Snedecor G.W., 1980, STAT METHODS
[9]
Snell F. D., 1949, COLORIMETRIC METHODS, V2