共 14 条
[1]
BENTLEY C. F., 1955, CANADIAN JOUR AGRIC SCI, V35, P264
[2]
DEAN AM, 1946, THESIS U ALBERTA
[3]
DOUGHTY J. L., 1941, SCI AGRIC [OTTAWA], V22, P135
[6]
JORDAN H. V., 1958, Advanc. Agron., V10, P407
[7]
LOWE L. E., 1964, CANADIAN J SOIL SCI, V44, P176
[8]
NEWTON JD, 1959, 21 U ALB B
[10]
WILLIAMS C. H., 1962, Plant and Soil, V17, P279, DOI 10.1007/BF01377668