[1]KANG Bei-ming,XU Jian,WU Shu-fang,et al.Effect of Combination of Polyacrylamide (PAM) and Natural Improvement Material on Some Soil Physical and Chemical Properties[J].Research of Soil and Water Conservation,2014,21(03):68-72,78.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 03
Page number:
68-72,78
Column:
Public date:
2014-06-28
- Title:
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Effect of Combination of Polyacrylamide (PAM) and Natural Improvement Material on Some Soil Physical and Chemical Properties
- Author(s):
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KANG Bei-ming1, XU Jian2, WU Shu-fang1,3, XU Xiao-min1, FENG Hao3
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1. College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Petrochina Changqing Oilfield Company. Xi’an 710018, China;
3. Institute of Water-saving Agriculture in Arid Regions of China, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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polyacrylamide (PAM); natural soil improvement material; soil physical and chemical properties
- CLC:
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S153
- DOI:
-
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- Abstract:
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In order to make full use of keeping the soil moisture of upper absorbent polymer, increasing soil nutrient and improving soil structures of some cheap organic resources, this study selected polyacrylamide (PAM) with strong water holding capacity, and PAM was mixed with different amounts of cheap organic resources, such as oil residue, straw, vermiculite and peat, shale, weathering coal, respectively, and then those mixed materials were applied to soil to increase soil nutrient and improve soil structures. Soil water-stable aggregates, soil porosity, soil organic matter, soil water content and soil water evaporation were determined by wet sieving method, weight method, potassium dichromate volumetric method, centrifuge method, respectively. The results show that: (1) compared with only adding PAM, soil porosity of different material treatments has no difference, but quantity of soil water-stable aggregates of different material treatments has increased obviously, the treatments of PAM with 0.6% straw and PAM with 0.3% oil residue increased significantly by 4.9% and 4.6%; (2) by measuring the organic matter of cheap organic material itself and the treatments, soil organic matter content of each treatment showed increasing trend with the increase of the amount of applied materials, soil organic matter were significantly affected by the treatments of PAM with weathered coal, the percentage of the loss of soil organic matter is higher and up to about 50%, for shale soil treat, the percentage of the loss of soil organic matter is less and about 6%; (3) through measuring the soil water content under different water suction and evaporation, the treatments of PAM with 3% weathered coal and PAM with 1% oil residue significantly increased available soil water content, significantly improved the soil evaporation resistance; (4) in general, treatments of PAM with weathered coal, PAM with sludge and PAM with straw, significantly improved soil structures, increased the content of soil organic matter and soil moisture. This research provides academic and instructive bases for developing organic composite water retaining agent.