電気分解水が水耕植物の生育におよぼす影響（第３報） 電解水の酸化還元電位が水耕コマツナの生育におよぼす影響

Abstract

To investigate the effects of the oxidation reduction potentials (ORP) of electrolytic water and its solution mixed manure on the early growth of soilless culture plant, Komatuna was cultured during ten days by using the electrolytic water solutions, which adjusted to the three ORP values in the region of 100-750 mV, and to the almost constant pH of 6.5±0.25.In the case of the ORP was as high as 700-750 mV, the length and weight of the plant (or seedling) were brightly repressed, but in the case of the ORP was as low as 100-150 mV, they were almost increased. In the case of the ORP was middle value, the length of plant was increased but its weight was slightly decreased.At both experiments of No. I and II, the electrolytic water solution of low ORP was mainly promoted the growth of top (stem and leaf) of plant, but there were no correlative relationships between the ORP and the leaf number, the root growth, because the maximum leaf length, the fresh and dry weights of top, and the top-root ratio of fresh weight at low ORP were larger than those of control plot.In the experiment of No. II, each ORP of two cathode water solutions was adjusted to 100-150 mV and 300-350 mV with well-water, respectively, and one solutionwas adjusted to 300-350 mV with anode water. Those three solutions and a control of well-water were mutually compared.At any experimental plots, the leaf number, both fresh and dry weights of top, and the top-root ratio of fresh weight were increased, namely, the growth promotion effect at top was found, and the growth in a plot adjusted to 300-350 mV with electrolytic water was most promoted the growth.