共 9 条
[1]
Chapman H.D., 1961, METHODS ANAL SOILS P, P169
[2]
MICROENVIRONMENT OF A DYNAMIC ANNUAL COMMUNITY IN RELATION TO RANGE IMPROVEMENT
[J].
HILGARDIA,
1975, 43 (03)
:79-102
[3]
HERBERT FW, 1969, SOILS YUBA AREA CALI
[4]
HOLLAND AA, 1968, AXT280 U CAL AGR EXT
[6]
MURPHY AH, 1973, 564 CAL AGR EXP STN
[7]
RAGUSE C A, 1970, Crop Science, V10, P723, DOI 10.2135/cropsci1970.0011183X001000060043x
[9]
WATANABE F. S., 1965, SOIL SCI SOC AMER PROC, V29, P677