Rserch Of SAP And Its Effects On Soil Physical Texture Typical Properties Under The Northern Desert Environment

Water is the bottleneck of studies on revegetation and ecological restoration inthe arid and semi-arid regions, which is significance to the construction of ecologicalenvironment with research and application of new technology of saving water. SAPhas a unique role in i agriculture, forestry, construction, afforestation and grassland.Currently, the comparison of different SAP (polymer classes) in agriculture field isalso rare, studies of the changes on soil physical properties and water distribution afteruse SAP is still not comprehensive, especially for Comparative Study of the role ofdifferent soil is extremely rare.Therefore, this study select three typical soil in arid regions of northern Chinaand the domestic and three SAP(polymer classes) that commonly used in domesticand foreign markets,by combining experimental basis indoor, outdoor environmentsimulation and experimental observations pot,explore the changes on soil physicalproperties and water distribution after use different SAP, and study the interactionbetween SAP and soil, to provide a theoretical basis in terms of variety selection, andmethods of application in agricultural,forestry and ecological restoration field.This study includes basic experiments, wild simulation and pot experiment. Thebasis of experimental is comparison of the water absorption rate among the threeSAPS. The wild part is further added content based on the experimental part, thatsimulate acid, salinization and soil conditions affect the northern extreme temperatureconditions of each aquasorb absorbency, and to explore the typical soil, a differentmode of administration aquasorb effects on the physical properties of soil bulkdensity, porosity, aggregate structure, etc.; explore aquasorb in different soil texture,depth under different conditions, the impact of different soil moisture distribution in soil, the preliminary study and soil interaction aquasorb the role and rule. The mainpot experiment aquasorb different depths administered under different applicationmethods, alfalfa sprouting rate, coverage, height (maximum height, averageheight), root distribution (the deepest Deep, Deep average), biomass(ground,underground) impact on the mechanism of action revealed aquasorb plant,after a comprehensive comparison make appropriate cropping patterns.The results are as follows:(1) Three aquasorb absorbency used in the experiments are greater impact by salt,pH and fertilizers (potash, phosphate). Where in the acidic solution on the inhibitionof three aquasorb absorbency greater than its inhibition of alkaline solution;concentration salt solution absorbency aquasorb inhibition with saline solutionshowed a significant positive correlation; in fertilizer solution with higher valencemetalion, water absorption ratio corresponding to the reduced water retention agent.In addition, low water retention agent can change the network structure, has asignificant impact on its absorbency.(2) Different types of aquasorb have different its water retention capacity indifferent soil texture. The interaction between aquasorb and the soil affected waterretention capacity of aquasorb simultaneously. On the soil is concerned, mainly in thetexture and structure, texture and different water absorption at different speeds, whenthe soil water absorption rate of water absorption rate of less than retaining agent, theinsurance agent will form an impermeable layer, then slowly lower soil evaporationimpermeable layer, played a water retention capacity; Conversely, when the soilwater speed in aquasorb absorbent when aquasorb deeper depth, the less amount ofwater sucked at this time, large particles but will increase the soil water retentionagent gap, it is faster evaporation of soil moisture. On aquasorb concerned, mainly interms of shape, depth and method of application, etc., first, aquasorb different water absorption rate of different shapes, sizes impermeable layer formation is different;Secondly, different insurance agent to different soil depths different evaporation ofsoil moisture; Finally, the effect of drying water retention when administered slightlyworse than saturated applied effects.(3)Administering insurance agent will help improve soil permeability, breathable,permeable, while effectively improve the soil compared to three, reducing the soilbulk density, thus contributing to plant uptake of soil moisture and nutrients forplants growth and create a more suitable physical environment. Aquasorb impact onsoil moisture distribution mainly in: a significant increase in the application ofwater-retaining agent and the lower layer (10cm) of soil moisture content, improvethe upper (5cm) of soil resistance to evaporation capacity of its application layer.(4) Aquasorb Rating: Three aquasorb under cold water and sort differenttreatment solution absorbency and low temperature impact is: MP3005KCE>Waterford> HG-60; water retention capacity of the soil texture in a different sort of to:sand MP3005KCE> Waterford> HG-60, loam Waterford> MP3005KCE> HG-60,clay HG-60> Waterford> MP3005KCE.(5) Pot experiments showed that treatment of alfalfa aquasorb budding rate,coverage, height, biomass has a significant role in promoting. Among them, the sizeof the biomass is mainly affected aquasorb application methods. Rational mode ofadministration will help improve soil permeability, water permeability, thusfacilitating absorption of water plants in the soil, creating a more suitable physicalenvironment for the growth of crops.