共 16 条
[1]
BLACK CA, 1953, AGRONOMY, V4, P123
[2]
BOWER CA, 1949, IOWA AGR EXPT STA RE, V362
[3]
DAMSGAARD-SORENSEN P., 1946, Tidsskrift for Planteavl, V50, P653
[4]
DICKMAN S. R., 1940, Industrial and Engineering Chemistry. Analytical edition, V12, P665, DOI 10.1021/ac50151a013
[5]
DYER WJ, 1938, CANAD J RES B, V16, P97
[7]
GHANI MO, 1943, INDIAN J AGR SCI, V12, P873
[8]
GORING C. A. I., 1951, SOIL SCI SOC AMER PROC, V15, P189
[10]
KAILA A, 1948, VALTION MAATALOUSKOE, V129