共 7 条
[1]
HAGGAR RJ, WEED RES
[2]
PHOTOELECTRIC SENSOR FOR DISTINGUISHING BETWEEN PLANT MATERIAL AND SOIL
[J].
JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH,
1976, 21 (02)
:145-155
[3]
KRIBEL KT, 1979, REMOTE SENS ENV, V8, P283
[4]
A METHOD FOR THE PRODUCTION OF UNIFORM-SIZED DROPS USING ELECTROSTATIC DISPERSION
[J].
TROPICAL PEST MANAGEMENT,
1981, 27 (02)
:262-264
[5]
THORNTON ME, 1966, PANS, V3, P114
[6]
TUCKER CJ, 1977, PHOTOGRAMM ENG REM S, V43, P721