聚丙烯酰胺在磷石膏基植被材料中的应用
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摘要
针对植被基材存在的强度低、碱度高以及制备成本高等问题,引入聚丙烯酰胺保水剂对磷石膏基植被材料进行改性。通过保水剂作用机理分析,表明保水剂的掺入在未改变基材晶相结构的同时,改善了基材保水性,使其吸水率高达47%,p H值降低4.3%,能缩短植被基材的发芽时间和提高基材根系穿透稳固力度。
In view of the problems of low strength, high alkalinity and high preparation cost of vegetation base materials, polyacrylamide waterretaining agent was introduced to modify phosphogypsum base vegetation materials. Through the analysis of the action mechanism of water-retaining agent, the experiment shows that the addition of water-retaining agent improves the water-retaining property of the substrate, and without changing the crystal structure of the substrate, making the highest water-absorbing rate of the substrate is 47% and the pH value was reduced by 4.3%, which can shorten the germination time of the vegetation substrate and improve the penetration and stability of the substrate roots.
In view of the problems of low strength, high alkalinity and high preparation cost of vegetation base materials, polyacrylamide waterretaining agent was introduced to modify phosphogypsum base vegetation materials. Through the analysis of the action mechanism of water-retaining agent, the experiment shows that the addition of water-retaining agent improves the water-retaining property of the substrate, and without changing the crystal structure of the substrate, making the highest water-absorbing rate of the substrate is 47% and the pH value was reduced by 4.3%, which can shorten the germination time of the vegetation substrate and improve the penetration and stability of the substrate roots.
引文
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[10]魏胜林,徐梦萤,张辉.保水剂和泥炭降低p H值效应及对木槿耐碱胁迫的影响[J].江苏农业科学,2011(1):187-189.
[11]陈茂铨,岳春雷,朱荫湄.保水剂及其在水土保持和造林绿化中的应用[J].林业科技开发,2002(4):12-14.
[12]黄麟,叶建仁,朱云峰.保水剂及其在农林业中的应用[J].林业科技开发,2007(3):12-15.
[2]王晓梅,陈建平,周云艳,等.厚层基材植物防护在红色粉砂岩边坡的应用[J].公路交通科技,2010(2):152-158.
[3]沈毅,晏晓林,梁爱学,等.厚层基材喷播边坡防护技术研究[J].公路交通科技,2007(2):151-154.
[4]陈戈.厚层基材喷播植草护坡在西南铁路的应用[J].路基工程,2005(3):97-101.
[5]ZHANG M T,QIU J D,YAN D.Application of External-Soil Spray Seeding Technique to Slopes Natural Eco-restoration and Protection[J].Science of Soil and Water Conservation,2004,3:2.
[6]夏栋,许文年,赵娟,等.植被混凝土护坡基材p H、有机质及其与速效养分的相关性分析[J].水土保持研究,2010(6):224-227.
[7]姜绍通,伍亚华,赵妍嫣.淀粉基高吸水树脂的制备新方法[J].合肥工业大学学报,2006,29(3):260-263.
[8]方岩雄,吕钱江,张永成,等.聚丙烯酸系超强吸水剂的制备及其进展[J].广州化工,2002,30(4):112-13.
[9]马鑫,魏占民,于健,等.保水剂对土壤特性长效影响的研究[J].灌溉排水学报,2013,32(3):117-119.
[10]魏胜林,徐梦萤,张辉.保水剂和泥炭降低p H值效应及对木槿耐碱胁迫的影响[J].江苏农业科学,2011(1):187-189.
[11]陈茂铨,岳春雷,朱荫湄.保水剂及其在水土保持和造林绿化中的应用[J].林业科技开发,2002(4):12-14.
[12]黄麟,叶建仁,朱云峰.保水剂及其在农林业中的应用[J].林业科技开发,2007(3):12-15.