共 9 条
[1]
CURTIS BYRD C., 1960, AGRON JOUR, V52, P599
[2]
DAHMS RG, 1969, THEORETICAL EFFECTS
[3]
GALLUN RL, 1972, J ENV QUAL, V2, P333
[4]
MARKKULA M, 1972, ANN AGR FENN, V2, P417
[5]
PORTER KENNETH B., 1963, CROP SCI, V3, P116, DOI 10.2135/cropsci1963.0011183X000300020005x