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保水剂是一种高吸水性树脂,这类物质含有大量强吸水基因,结构特异,在树脂内部可产生高渗透缔合作用并通过其网孔结构吸水,具有吸水性强、保水力大、释水性好、有效期长的特点。在植树穴内将保水剂与土壤充分混合后再栽植苗木,当土壤中的保水剂遇到下渗水后可以有效蓄贮水分供苗木利用,达到提高造林成活率的目的。造林中适宜采用0.5mm～3mm 粒径的大颗粒保水剂,有利于增加土壤通透性,保水剂的施用量以占施入范围内(植树穴)干土重的0.1%为最佳。具体使用方法如下:
Water-retaining agent is a kind of superabsorbent polymer, which contains a large number of strong water-absorbing genes. It has a special structure and can produce high-permeability association inside the resin and absorb water through its mesh structure. It has the advantages of strong water absorption, Water is good, the characteristics of a long period of validity. In the tree planting hole, the SAP will be fully mixed with the soil before planting the seedlings. When the SAP in the soil encounters the seepage water, it can effectively store the water for the seedlings to use to achieve the purpose of improving the survival rate of afforestation. Appropriate afforestation in the 0.5mm ~ 3mm particle size of large particles of water-retaining agent, is conducive to increasing soil permeability, the amount of water-retaining agent to account for the application range (planting shoal) dry soil weight of 0.1% for the best. Specific use as follows: