共 15 条
[2]
CHIZHEVSKAtA Z. A., 1927, MEM INST AGRON A LENINGRADE, V4, P253
[3]
Clark WM, 1928, DETERMINATION HYDROG
[5]
HOPPER TH, 1937, OIL SOAP, V14, P34
[6]
POWERS WL, 1928, J AM SOC AGRON, V20, P755
[7]
ROBINSON B. B., 1933, JOUR AMER SOC AGRON, V25, P312
[8]
SCHMALFUSS K, 1936, POT EXPTS BODENK PFL, V1, P1
[9]
Ratio of phosphate, nitrate, and potassium on absorption and growth
[J].
BOTANICAL GAZETTE,
1910, 50
:0001-0030
[10]
SELLE H, 1926, BEDEUTUNG BODENAZIDI, V5, P146