共 11 条
[2]
EVANS GC, 1972, STUDIES ECOLOGY, V1, P97
[6]
MALKKI Y, 1978, J AGR SCI FINLAND, V50, P103
[7]
MANN LOUIS K., 1952, HILGARDIA, V21, P195
[8]
MATTIKALA EJ, 1967, ACTA CHEM SCAND, V21, P2891
[9]
NILSSON T, 1980, SWED J AGR RES, V10, P77
[10]
PLATENIUS HANS, 1935, PROC AMER SOC HORT SCI, V33, P481