| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for raising propagule generating as leaf side buds of Japanese yam, preventing insect affection without taking time to perform, and expanding the propagule as it is to a big mass state. <P>SOLUTION: The method for raising the propagule includes covering, with a covering material 6 made of a sheet with light resistance, the lower part of a stem 3 of a height b shorter than a height (a) of the upper part of the stem 3, together with leaves 4, in a period when flowers blooming on Japanese yam planted on an outside cultivated land and grown wither, and tightening the upper end part and lower end part of the sheet with a string material 7 so as to shade the propagule 5, suppressing the contact of the propagule 5 with open air followed by making the propagule pass a summer season, and removing the covering material 6 at the beginning of autumn. <P>COPYRIGHT: (C)2012,JPO&INPIT |
