| 摘要 |
PROBLEM TO BE SOLVED: To obtain an add fertile soil material useful as an excellent vegetation base material, suitable for all kinds of trees of plantation, capable of reducing an amount of water required for smooth forced feed by pump and extremely decreasing cracking and solidification, by mixing an add fertile soil material with water and a high-performance AE water reducing agent. SOLUTION: This an add fertile soil material is forcedly fed by pump to a nursery. The an add fertile soil material is mixed with preferably 5-38 wt.% (based on the total of the add fertile soil material) and preferably 1-6 wt.% of a high-performance AE water reducing agent such as a polycarboxylic acid ether-based complex and more preferably a water retaining agent such as sodium polyacrylate. |
