| 摘要 |
PURPOSE:To obtain the material, useful not only for refilling embedded pipes for road construction but also as horticultural and planting soil and a soil neutralizing agent for a paddy field and a plowland and excellent in water permeability, etc., by adding a water-soluble polymer to hydrous soil, granulating the resultant soil and then treating the granulated soil with lime. CONSTITUTION:This agricultural material which is reclaimed soil is obtained by adding a water-soluble polymer [preferably an acrylamide- or a methacrylamide-based polymer containing (meth)acrylic acid or a salt thereof] in an amount of preferably 0.02-0.5wt.% based on soil to be treated to the hydrous soil, granulating the resultant soil, then treating the obtained grains with lime powder (preferably quick lime powder) having <=1mm grain diameter and uniformly disperse the lime powder on the grain surfaces. The amount of the lime powder used is preferably 1-5wt.% based on the soil to be treated and the water-soluble polymer is preferably used as a powder having <=0.4mm average particle diameter. |
