共 36 条
[1]
BENTLEY JR, 1951, 870 US DEP AGR CIRC, P52
[2]
BISWELL H. H., 1956, JOUR RANGE MANAGEMENT, V9, P19, DOI 10.2307/3894645
[3]
BLACK C. A., 1968, SOIL PLANT RELATIONS
[4]
CAMERON IH, 1964, J AGRIC VIC, V62, P255
[5]
CAYLEY JWD, 1968, 1ST P VICT WEEDS C A
[6]
CHAPMAN HD, 1961, METHODS ANALYSIS SOI
[7]
Donald C. M., 1960, Herbage Abstracts, V30, P81
[8]
EPSTEIN E, 1972, MINERAL NUTRITION PL
[9]
HAWTHORNE HA, 1956, THESIS U CALIFORNIA