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G- biomass was increased in cabbage, spinach soil containing SAP, but was decreased in wheat soils. The population of fungi was increased in cabbage and spinach soils containing SAP, but was decreased in wheat soil with SAP. potassium polyacrylate disadvantages of a starch-based super absorbent polymer on characteristics of soilless growth media and the growth of Chinese cabbage. In order to raise the fertilizer use efficiency, prevent from non- point pollution and nitrogen pollution of groundwater, and select superior material, five different kinds of super absorbent polymer (SAP) were selected as the objects. Similarly, the efficiency of water use also increased by 97.1%. Leaf water potential under adequate and moderate irrigation differs slightly for SAP application, whereas under deficit irrigation the values were exceeded significantly by 27.8%. The superior growth and water use efficiency of corn treated with SAP under deficit irrigation was ascribed to maintenance of higher relative water contents in leaves as well as intercellular carbon dioxide concentration, net photosynthesis and transpiration rate.

In the experiment,the interaction effect of Super Absorbent Polymer and urea on corn growth were studied.Its result shows the interaction effect of Super Absorbent Polymer and urea can increase corn,s stem tall leaf area chlorophyll,promote the growth of corn,s roots,Increased corn yield.Should pay attention to the dosage of Super Absorbent Polymer and urea,use too much or too little,the effect is not obvious,Best treatment in the experiment is B2N2. Based on the mechanism of water and fertilizer retention, application methods and the results of previous studies, combined with the characteristics of easy growth of alfalfa, strong drought resistance, large yield and high economic benefits, the paper puts forward that Super Absorbent Polymer in the alfalfa arid sandy area should pay attention to the problems and prospects for development, so as to provide new ideas for the development of forage industry in arid sand area. The super absorbent polymer and fly ash were used in the concrete and the frost resistance of concrete was studied. All in all, using a water absorbent polymer is a good thing. The optimum of quantity released water was 386.108 mL with the addition of 11.45 g NaCl and the mixing rate was 98.31 rpm for 29.91 minutes.

The variable of this experiment were quantity of the salt, duration time, and mixing rate. The results show that the SAP definitely affects the early hydration process of Portland cement, increases the hydration heat evolution rate during the acceleration period and during the main exothermic peak, promotes the earlier appearance of the main exothermic peak, but does not affect the lengths of the initial reaction period and the induction period and the onset of the acceleration period. Water absorption and release of super-absorbent polymer(SAP) and lightweight aggregate,as well as their effects on the internal relative humidity(IRH) of concrete,were studied in this paper.A kind of concrete autogenous shrinkage control method was given,based on the humidity compensation principle.According to the downward trend of early-age internal relative humidity of concrete with low water-binder ratio,proper internal curing materials were introduced to the concrete and the entrained water by each material was distributed rationally.The results indicated that the internal relative humidity decline of the concrete delayed obviously at an early age,and the early-age self-desiccation of concrete was remitted,as well as the autogenous shrinkage and the compressive strength loss owing to the low strength of the internal curing materials.Meanwhile,the effect of internal curing was better than that with single internal curing material.

The results indicated that SAP had an important effect on the soil microbial community and its degrading TPH activities. Third, the ratio of degraded to TPH was slightly increased in soil with SAP treatment, but a significant change depended on the crop species. JOURNAL OF CROP PRODUCTION RESEARCH (ENVIRONMENTAL STRESSES IN PLANT SCIENCES). There’s been a lot of research done in this area, and the conclusion is that they’re safe. In the arid sandy area, there is little precipitation and strong evaporation, and the lack of water and nutrients in the arid sand area is one of the important factors which restrict the crop growth in sandy area. It releases water and nutrients to the plants when surrounding soil around root zone of plants become deficient, prolonging plants survival. Correct management for using microbial species of symbiotic with plants and application super absorbent polymer especially in dry farm would be effective in improvement their yield and quality. A network is formed by cross-linking wherein the polymeric chains in the Super Absorbent Polymer that are parallel to each other and regularly linked. Backpacks are generally used to carry luggage and ensure that they are an important element to be used as hiking gear.

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