共 25 条
[11]
MEASUREMENT OF AMOUNT OF NITROGEN FIXED BY A LEGUME CROP
[J].
PLANT AND SOIL,
1977, 47 (03)
:713-715
[16]
HARDARSON G, 1987, CRC HDB PLANT SCI AG, P165
[18]
JOHNSON HERBERT W., 1965, AGRON J, V57, P179