共 145 条
[121]
SCHUMACHER TE, 1990, P GREAT PLAINS SOIL, V3, P105
[123]
SCHUMACHER WK, 1988, THESIS S DAKOTA STAT
[125]
TAYLOR RG, 1980, EFFECT PLANTING DATA, P49
[128]
TEYKER RH, 1992, P ROOTS PLANT NUTRIT, P116
[129]
THIER AL, 1986, SPECIAL B CHLORIDE C, V2, P62