共 7 条
[2]
LEWIS A. H., 1960, JOUR AGRIC SCI, V54, P310, DOI 10.1017/S0021859600021225
[3]
LOW A. J., 1957, Outlook on Agriculture, V1, P155
[4]
IMPROVEMENTS IN THE STRUCTURAL STATE OF SOILS UNDER LEYS
[J].
JOURNAL OF SOIL SCIENCE,
1955, 6 (02)
:179-199
[5]
THE STUDY OF SOIL STRUCTURE IN THE FIELD AND THE LABORATORY
[J].
JOURNAL OF SOIL SCIENCE,
1954, 5 (01)
:57-&
[6]
LOW AJ, 1956, 6 INT C SOIL SCI A, P247
[7]
VANDOBBEN WH, 1950, VERSL I LANDB ONDERZ, P87