共 16 条
[1]
BARR AJ, 1976, USERS GUIDE SAS
[3]
FINNEY K. F., 1957, AGRON JOUR, V49, P341
[6]
Jackson M.L., 1958, SOIL CHEM ANAL
[8]
JOHNSON VA, 1976, IMPROVING NUTRIENT Q, V2, P134