共 20 条
[12]
IRWIN RW, 1973, CAN AGR ENG, V15, P128
[13]
LEAMER ROSS W., 1941, JOUR AMER SOC AGRON, V33, P1003
[14]
LUTHIN JN, 1957, AGRONOMY MONOGR, V7
[15]
MAZURAK A. P., 1955, AGRON JOUR, V47, P490
[16]
RICHARDS NR, 1949, 11 ONT SOIL SURV REP
[18]
SCHWAB GO, 1975, OHIO AGR RES DEV CTR, V1081
[19]
VANSCHILFGAARDE J, 1974, AGRONOMY MONOGR, V17
[20]
WENDTE LW, 1978, T ASAE, V21, P484, DOI 10.13031/2013.35330