共 7 条
[2]
CALCIUM DEFICIENCY AND AMMONIA TOXICITY AS SEPARATE CAUSAL FACTORS OF (NH4)2HPO4-INJURY TO SEEDLINGS
[J].
SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS,
1970, 34 (02)
:255-&
[3]
DRESNER S, 1973, POPULAR SCI MAY, P102
[4]
HOWARD D. D., 1965, SOIL SCI SOC AMER PROC, V29, P558
[5]
LINDSAY W. L., 1959, SOIL SCI SOC AMER PROC, V23, P12
[7]
YOUDEN WJ, 1975, STATISTICAL MANUAL A