灌漑開始期と水稻生育の關係に就いて(豫報)

概要

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It has been reported often that the growth of rice plant after transplantation would be retarded by a continual dry weather. There are also many discussions about the suitable time for irrigation in case of the direct sowing. We studied the effect on the growth of rice plant by changing irrigation period using pots ; this year (1948) the period was set from the time of transplantation ot the harvest. The method of experinment ; ……… We conducted the following experiments dividing the pots into three sections and each section was started on the fifth of July. The first section was the standard and had been filled up with water right after transplanting. The second and the third section had been irrigated from the second of August, 1948 and the twenty-fourth of August, respectively. Results ; ……… The 1st section grew favorably from the beginning to the end. The 2nd section showed a little inferior to the 1st section. At the 3rd section, we found the height of the plants and the number of the leaves were worse than those of the 1st and the 2nd section. While scarce coronal roots, We observed many branches and hair roots at the 3rd section. Summary ; ……… The 3rd section showed a tendency to rice plant cultivated on the upland field, but it's growth was retarded about 5 days comparing with that of the 1st section.
日本作物学会の論文
1950-08-30