共 20 条
[12]
OLSEN SR, 1965, METHODS SOIL ANAL 2, P1035
[15]
EFFECT OF AMMONIUM AND NITRATE FERTILIZATION ON PHOSPHORUS UPTAKE AS RELATED TO ROOT-INDUCED PH CHANGES AT ROOT-SOIL INTERFACE
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1971, 35 (02)
:301-&
[16]
ROLLWAGEN BA, 1981, THESIS U WASHINGTON
[18]
STEEL R. G. D., 1960, PRINCIPLES PROCEDURE
[20]
1976, I FOREST PROD CONTRI, V25