共 15 条
[2]
ASGHAR A. G., 1957, SOIL SCI, V83, P239, DOI 10.1097/00010694-195703000-00008
[3]
BIRCH H. F., 1960, Plant and Soil, V12, P81, DOI 10.1007/BF01377763
[6]
CAMPBELL RB, 1948, P SOIL SCI SOC AM, V13, P66
[7]
EATON FRANK M., 1960, SOIL SCI, V90, P253, DOI 10.1097/00010694-196010000-00008
[9]
Jackson ML, 1958, SOIL CHEMICAL ANALYS
[10]
McKEAGUE J. A., 1963, CANADIAN JOUR SOIL SCI, V43, P70