2,3 作物に対する畑地灌漑の影響に就て

概要

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1. It has been studied at the Hokkaido University farm on 1950 that the irrigation affected some crops oats (Kairyohadaka), upland rice (Hokkaiwase), and potato (Danshaku). 2. As the results of this experiment: (1)Oats: Culm length is the highest in the plot irrigated at the three periods, while tillering is the fewest in this plot. The largest yield is obtained in the plot irrigated at the maturing time (120%). Moreover, number of sterile spikelets was increased in the plot irrigated at the three periods.(2) Upland-rice: Culm length in the plot irrigated at the time of seedling stage and the whole period is slightly high, bur in the other plots there is almost no difference. Tillering is the fewest in the plot irrigated at the whole period and there is almost no difference in the other plots. The yield is increased in the plots irrigated at the whole period (136%) and the maturing time (123%). (3). Potato: The yield in the plot irrigated at the blooming time is the fewest (97%) and the largest yield was obtained in the plot irrigated at the growing time (117%). 3. Irrigation under the drought condition brings good effect upon the growth of these crops, but the growth of crops is suffered by the excess of water content of the soil when it rains just after the irrigation.
日本作物学会の論文
1952-12-20