共 6 条
[1]
FLIKKE AM, 1957, J AM SOC AGR ENG, V38, P592
[3]
NAVRATIL RJ, 1982, AGRON J, V74, P159, DOI 10.2134/agronj1982.00021962007400010045x
[5]
SEYEDIN N, 1984, CAN J PLANT SCI, V64, P497, DOI 10.4141/cjps84-072
[6]
WELLINGTON P. S., 1964, J NAT INST AGR BOT, V10, P129