초록
To investigate the distribution of Plantago asiatica Linne, almost, restricted on the road-side, the plant growth analyzed by experimental cultivation under the condition of tread-pressure; 10 times/day (7.33kg/$cm^2$
), 20 times/day (12.27kg/$cm^2$), 30 times/day (20.05kg/$cm^2$
) and the control plot (1.68kg/$cm^2$
). The matter production in the 10-time-per-diem plot (7.33kg/$cm^2$
) of tread-pressure howed more large value than that inthe control one (1.68kg/$cm^2$
) and those in the 20-0time-per-diem plot (12.27kg/$cm^2$
) and the 30-time-per-diem one (20.05kg/$cm^2$
) small values than that of the control plot. Especially, the growth of roots and spikes was extremely repressed. The number of leaves, scapes and lateral buds tend to increase in the tread-pressure of 20 times/day (12.27kg/$cm^2$
) and 30 times/day (20.05kg/$cm^2$
). The water contents of roots along the increase of tread-pressure to continuosly decreased. By the increase of tread-pressure, T/R ratio and C/F ratio their group decreased. The plant growth (7.33kg/$cm^2$
) in the 10-time-per-diem plot increased more than that in the control one is regarded as the effect of tread-pressure affection on the road-side distribution of this plant.