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                聚丙烯酰胺在水土流失的防护中怎么使用?
                聚丙烯酰胺在水土流失的防护中怎么使用?
                发布时间:2021-10-10 浏览
                聚丙烯酰胺在水土流失的防护中怎么使用?

                       以前提到水土流失,大家想到的方法一定是用种植植物来防止水土的流失,这确实起到了一定的作用,随着工业的快速发展,用种植的方法已经跟不上了,那么现在有什么好的方法可以预防水土流失呢?那就是聚丙烯酰胺!一提到聚丙烯酰胺大家想到的肯定与污水有关,心里肯定疑问它怎么和水土流失有关?今天厂家来揭秘其中的秘密
                      聚丙烯酰胺防治田间水土流失机理
                      聚丙烯酰胺是一种高分子聚合物,它具有平面网格和立体网格结构,并极易溶于水.通过大量试验得出:当其溶解于水,并与土壤颗粒发生作用时,能够改善土壤结构,增强土壤水稳性,提高土壤抗水蚀能力.通过试验,还优选出了适宜剂型及经济用量。
                      聚丙烯酰胺增大了土壤的沉降系数
                      将聚丙烯酰胺溶解于水,配成不同浓度的水溶液,并均匀喷施于土壤表面,使其与土壤颗粒充分结合,同时,对照土样均匀喷施等体积的清水.经取土样试验检测,聚丙烯酰胺处理后的辽西砂壤土沉降系数由原来的158%增大到172%,比对照土样◣相对增加了9%;辽北中壤土由144%增大到161%,轻壤土也相对增加了8%.这些变化表明,聚丙烯酰胺能够增大土壤的沉降系数,有利于提高土壤的抗水蚀能力。
                      聚丙烯酰胺能够改善土壤结构
                      对施用聚丙烯酰胺的土样品与对照土样进行了检测,结果施用聚丙烯酰胺的土壤的分散系数减少了7.1%~28.6%,结构系数增大了3.2%~7.7%,说明聚丙烯酰胺增强了土壤的结构性能,提高了土壤的整体性.
                      聚丙烯酰胺改善了土壤的渗透性
                      观测结果表明,处理区土壤渗透系数比对照区增加了32%.渗透系数增大,有利于雨水入渗到土壤底层蓄积起来,地表不产生径流或径流量减小,从而减少地表径流冲刷,起到保水、保土的作●用.同时,还可改善土壤的通气条件,为作物增产打下基础。

                      随着社会的发展,科学技术不断进步,人类在不断地改造自然和征服自然,也在不断地破坏环境,再生一系列环境问题.人类为了扩大生存空间,在不断地开展城ξ镇建设,开发新区,开矿建厂;为了发展旅游,砍树平山,修建亭廊阁轩等,常造成城镇排水工程淤堵,破坏市区环境,加剧水土流失程度及护坡工程建设难度,这些属于城市发展中的水土流失问题.为了发展山区经济,开辟畜牧、养殖业,但由于牲畜散放、蚕农管理技术粗放,造成林地人踩、牲畜践踏,林下无草;蚕场养殖失衡,造成次生沙化等,产生农村新的水土流失的问题.上述这些以及其它方面水土流失的治理问题,促进了聚丙烯酰胺在防治水土流失领域试验研究工作的进一步深入和广泛推广,聚丙烯酰胺在防治水土流失领域的开发和应用,具有深远的历史意义和重大的现实意义,其应用潜力很大。

                聚丙烯酰胺图片

                英文版:How to use polyacrylamide in soil erosion protection?



                Before mentioned soil erosion, we think of the method must be used to plant plants to prevent soil erosion, which does play a certain role, with the rapid development of industry, with the method of planting has been unable to keep up, so now what good method can prevent soil erosion? That's polyacrylamide! When it comes to polyacrylamide, what you think of is definitely related to sewage, and how is it related to soil erosion? Today, manufacturers reveal the secrets

                Mechanism of polyacrylamide on soil erosion control in field

                Polyacrylamide is a kind of polymer, which has planar and three-dimensional grid structure and is easily soluble in water. Through a large number of experiments, it is concluded that when it is dissolved in water and interacts with soil particles, it can improve soil structure, enhance soil water stability and enhance soil water erosion resistance. The suitable dosage form and economic dosage were optimized through the experiment.

                Polyacrylamide increases the settlement coefficient of soil

                Polyacrylamide dissolved in water, mixed into different concentrations of water solutions, and evenly sprayed on the surface of the soil, so that it fully combined with soil particles, at the same time, control soil samples evenly sprayed with equal volume of water. The soil sample test showed that the settlement coefficient of the west Liaoning sand loam after polyacrylamide treatment increased from 158% to 172%, 9% higher than that of the control soil sample. The medium loam increased from 144% to 161%, and the light loam increased by 8%. These changes indicate that polyacrylamide can increase the settlement coefficient of soil and improve the ability of soil to resist water erosion.

                Polyacrylamide improves soil structure

                The soil samples treated with polyacrylamide and the control soil samples were tested. The results showed that the dispersion coefficient of the soil treated with polyacrylamide decreased by 7.1% ~ 28.6%, and the structure coefficient increased by 3.2% ~ 7.7%, indicating that polyacrylamide enhanced the soil structural properties and improved the soil integrity.

                Polyacrylamide improves the permeability of the soil

                The observation results show that the soil permeability coefficient in the treated area is 32% higher than that in the control area. The increase of the permeability coefficient is beneficial for rainwater to infiltrate into the soil bottom and accumulate, and there is no runoff or decrease of runoff on the surface, so as to reduce the surface runoff erosion and play the role of water conservation and soil conservation. At the same time, it can also improve soil aeration conditions, and lay a foundation for crop yield increase.

                With the development of society and the continuous progress of science and technology, human beings are constantly transforming and conquering nature, but also constantly destroying the environment and regenerating a series of environmental problems. In order to expand the living space, human beings are constantly developing urban construction, developing new areas, mining and building factories; In order to develop tourism, cut down trees and flat mountains, build pavilions, corridors, pavilions, etc., often cause urban drainage engineering blockage, damage to the urban environment, aggravate the degree of soil erosion and slope protection engineering construction difficulty, these belong to the problems of soil erosion in urban development. In order to develop the economy in mountainous areas, animal husbandry and breeding were opened up, but because of the loose release of livestock and the extensive management technology of sericulture, the forest was trampled by people and livestock, and there was no grass under the forest. Silkworm farm breeding imbalance, resulting in secondary desertification and so on, resulting in new soil erosion problems in rural areas. These and other problems of soil erosion, promote the polyacrylamide in the field of prevention and control of soil erosion experiment research further in-depth and extensive promotion of polyacrylamide in the prevention and control of soil and water loss in the field of development and application, is of great historical significance and great realistic significance and has a great potential for its application.

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