共 29 条
[1]
AANDAHL AR, 1948, SOIL SCI SOC AM PRO, V13, P449
[3]
BAEUMER K, 1970, Netherlands Journal of Agricultural Science, V18, P283
[4]
BURFORD JR, 1976, 197884 AGR RES COUNC
[5]
Campbell C.A., 1978, DEV SOIL SCI, V8, P173, DOI 10.1016/S0166-2481(08)70020-5
[10]
EFFECT OF PLOWING AND DIRECT DRILLING ON SOIL NITRATE CONTENT
[J].
JOURNAL OF SOIL SCIENCE,
1975, 26 (01)
:53-61