共 21 条
[1]
[Anonymous], 1975, OFFICIAL METHODS ANA
[3]
BUTLER G. W., 1962, Plant and Soil, V16, P214, DOI 10.1007/BF01377217
[5]
BUTLER GW, 1973, CHEMISTRY BIOCHEMIST, V2, P127
[6]
Cooper J. P., 1973, Chemistry and biochemistry of herbage. Volume 1., P379
[8]
GORSLINE G. W., 1964, CROP SCI, V4, P207, DOI 10.2135/cropsci1964.0011183X000400020026x
[9]
Grunes D. L., 1970, Advances in Agronomy, V22, P331, DOI 10.1016/S0065-2113(08)60272-2