共 21 条
[5]
Brewster J. L., 1972, Soils and Fertilizers, UK, V35, P355
[6]
NUTRIENT CATION FLOWS IN SOIL AROUND PLANT ROOTS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1970, 34 (03)
:421-&
[7]
CHAPMAN H.E., 1966, DIAGNOSTIC CRITERIA