共 20 条
[1]
ALBRITTON EC, 1955, STANDARD VALUES N ED
[2]
BRADFIELD R, 1934, 592 B CORN U AGR EXP
[4]
CONWAY VERONA M., 1940, BOT REV, V6, P149, DOI 10.1007/BF02879342
[5]
FRASER GK, 1933, B FOR COMM LOND, V15
[7]
GLASSTONE S, 1951, TEXTBOOK PHYSICAL CH
[9]
JACKSON ML, 1956, SOIL CHEMICAL ANALYS