共 18 条
[4]
BURTON GW, 1956, AGRON J, V48, P296
[6]
DEINUM B, 1971, Netherlands Journal of Agricultural Science, V19, P264
[8]
ESAU K, 1965, PLANT ANATOMY, P45
[9]
MAHLER HR, 1971, BIOLOGICAL CHEMISTRY, P474
[10]
MCLEOD MN, 1972, J BRIT GRASSLAND SOC, V27, P23