共 33 条
[21]
MITCHELL RL, 1957, 6 INT C SOIL SCI PAR, P249
[22]
OIEN A., 1966, Forskning og Forsk i Landbruket, V17, P73
[24]
RAUTERBERG E., 1964, Zeitschrift fur Pflanzenernahrung, Dungung und Bodenkunde, V106, P128, DOI 10.1002/jpln.19641060206
[27]
RINKIS G., 1965, Latvijas PSR Zinatnu Akademijas Vestis, V4, P75
[28]
RUBESKA I, 1966, ATOM ABSORPT NEWSL, V5, P69
[29]
SCOTT R. O., 1960, Journal of the Science of Food and Agriculture, V11, P584, DOI 10.1002/jsfa.2740111007
[30]
STUPAR J., 1967, LANDWIRT FORSCH, V20, P12