共 30 条
[1]
A NEW HAND-HELD RECORDING PENETROMETER FOR SOIL STUDIES
[J].
JOURNAL OF SOIL SCIENCE,
1980, 31 (02)
:279-&
[2]
BOONE FR, 1986, NETH J AGR SCI, V34, P349
[3]
BOONE FR, 1978, NETH J AGR SCI, V26, P405
[4]
BOWEN HD, 1981, AM SOC AGRIC MONOGR, V4, P32
[5]
Cannell R. Q., 1977, Applied Biology, V2, P1
[8]
CASSEL DK, 1982, PREDICTING TILLAGE E, P45
[9]
EFFECT OF DEEP RIPPING, THE PREVIOUS CROP, AND APPLIED NITROGEN ON THE GROWTH AND YIELD OF A WHEAT CROP
[J].
AUSTRALIAN JOURNAL OF EXPERIMENTAL AGRICULTURE,
1986, 26 (04)
:469-479
[10]
EHLER W, 1983, SOIL TILL RES, V3, P262