共 67 条
[2]
BLAKE G. R., 1962, American Potato Journal, V39, P227, DOI 10.1007/BF02900395
[3]
Blake G. R., 1965, METHODS SOIL ANAL 1
[5]
BRECKA J, 1971, VII2228 COLL AGR DEP
[6]
BROWNING GM, 1943, P SOIL SCI SOC AM, V8, P91
[7]
BUTSON MJ, 1977, SIN222 SCOT I AGR EN
[8]
LABORATORY PENETROMETER FOR MEASUREMENT OF STRENGTH OF SOIL CLODS
[J].
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH,
1977, 22 (01)
:85-91
[9]
OCCURRENCE AND PREDICTION OF CLODS IN POTATO RIDGES IN RELATION TO SOIL PHYSICAL-PROPERTIES
[J].
JOURNAL OF SOIL SCIENCE,
1976, 27 (01)
:1-9
[10]
FLOTATION METHOD FOR RAPID MEASUREMENT OF WET BULK DENSITY OF SOIL CLODS
[J].
JOURNAL OF SOIL SCIENCE,
1973, 24 (02)
:239-243