| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide culture soil for a seedling with soil that prevents collapse when a seedling raised in a seedling-raising container is mechanically transferred with soil attached to its root and that can maintain good water permeability over a long period. <P>SOLUTION: A granular surfactant and a granular fixation agent are added to a culture soil base. Preferably, the surfactant comprises a liquid surfactant carried in a granular carrier. Also, the surfactant is preferably an anionic surfactant or a nonionic surfactant, and preferably a polyoxyalkylene derivative. The fixation agent is preferably a water-soluble polymer compound composed chiefly of acrylamide. The amount of addition of the fixation agent is preferably in the range of 0.4 to 1.2 wt.% of the culture soil, and the amount of addition of the surfactant is preferably in the range of 0.04 to 0.4 wt.% of the culture soil. <P>COPYRIGHT: (C)2012,JPO&INPIT |
