共 25 条
[2]
DRAPER N, 1966, APPLIED REGRESSION A
[8]
Jackson, 1958, SOIL CHEMICAL ANALYS, P197
[9]
A TRACER STUDY OF NITROGEN BALANCE AND RESIDUAL NITROGEN AVAILABILITY WITH 12 SOILS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1967, 31 (03)
:403-+
[10]
LUDWICK AE, 1973, 7340 COL STAT U