共 12 条
[2]
Bremner J.M., 1965, METHODS SOIL ANAL PA, P1179
[3]
Chapman H.D., 1961, METHODS ANAL SOIL PL, P56
[4]
EASTON FM, 1957, PLANT PHYSL, V32, P169
[6]
LANG DA, 1977, RHOD AGR J, V74, P131
[7]
NELSON M, 1932, U ARKANSAS AGR EXPT, V273
[10]
TUCKER TC, 1968, ADV PRODUCTION UTILI, P183