Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil
Green approaches are much more appreciable during the present scenario. Soil amendments are frequently applied for improving water use efficiency, reducing soil salinity in arid and semi-arid areas, controlling the secondary salinization of cultivated soils, and increasing the carbon sequestration c...
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| Format: | Article |
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MDPI AG
2020-11-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/10/11/519 |
| _version_ | 1827702994204884992 |
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| author | Weiying Feng Jiayue Gao Rui Cen Fang Yang Zhongqi He Jin Wu Qingfeng Miao Haiqing Liao |
| author_facet | Weiying Feng Jiayue Gao Rui Cen Fang Yang Zhongqi He Jin Wu Qingfeng Miao Haiqing Liao |
| author_sort | Weiying Feng |
| collection | DOAJ |
| description | Green approaches are much more appreciable during the present scenario. Soil amendments are frequently applied for improving water use efficiency, reducing soil salinity in arid and semi-arid areas, controlling the secondary salinization of cultivated soils, and increasing the carbon sequestration capacity of soils. Thus, lab soil column simulation experiments and field experiments were carried out to evaluate these functions of two separate amendments, polyacrylamide-based super absorbent polymer (SAP) and corn straw biochar at different application rates. The simulation experiments showed that both SAP and biochar inhibited the accumulation of soil salinity, with a reduced rate of 9.7–26.3% and 13.5–37.2%, respectively, dependent on the amendment application rates. The field experiments found different salt inhibition effects of the two amendments with growth stages of maize. Soil salinization was inhibited in the pre-germination and early jointing stages by SAP, but throughout the whole growth period by biochar. Both soil amendments reduced soil electrical conductivity, and biochar increased the soil contents of Ca<sup>2+</sup>, Mg<sup>2+</sup>, and K<sup>+</sup>. Our observations demonstrated that application of biochar and SAP played important roles in increasing soil fertility and inhibiting soil salt accumulation. It provided an effective method to potentially mitigate the environmental crisis and promote sustainable development in agriculture. |
| first_indexed | 2024-03-10T15:08:14Z |
| format | Article |
| id | doaj.art-98fb16eaf9ef49f8a22f148cf0924433 |
| institution | Directory Open Access Journal |
| issn | 2077-0472 |
| language | English |
| last_indexed | 2024-03-10T15:08:14Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agriculture |
| spelling | doaj.art-98fb16eaf9ef49f8a22f148cf09244332023-11-20T19:34:50ZengMDPI AGAgriculture2077-04722020-11-01101151910.3390/agriculture10110519Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized SoilWeiying Feng0Jiayue Gao1Rui Cen2Fang Yang3Zhongqi He4Jin Wu5Qingfeng Miao6Haiqing Liao7School of Space and Environment, Beihang University, Beijing 100191, ChinaSchool of Space and Environment, Beihang University, Beijing 100191, ChinaDepartment of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100089, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaUSDA-ARS, Southern Regional Research Center, New Orleans, LA 70124, USACollege of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, ChinaCollege of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, ChinaState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, ChinaGreen approaches are much more appreciable during the present scenario. Soil amendments are frequently applied for improving water use efficiency, reducing soil salinity in arid and semi-arid areas, controlling the secondary salinization of cultivated soils, and increasing the carbon sequestration capacity of soils. Thus, lab soil column simulation experiments and field experiments were carried out to evaluate these functions of two separate amendments, polyacrylamide-based super absorbent polymer (SAP) and corn straw biochar at different application rates. The simulation experiments showed that both SAP and biochar inhibited the accumulation of soil salinity, with a reduced rate of 9.7–26.3% and 13.5–37.2%, respectively, dependent on the amendment application rates. The field experiments found different salt inhibition effects of the two amendments with growth stages of maize. Soil salinization was inhibited in the pre-germination and early jointing stages by SAP, but throughout the whole growth period by biochar. Both soil amendments reduced soil electrical conductivity, and biochar increased the soil contents of Ca<sup>2+</sup>, Mg<sup>2+</sup>, and K<sup>+</sup>. Our observations demonstrated that application of biochar and SAP played important roles in increasing soil fertility and inhibiting soil salt accumulation. It provided an effective method to potentially mitigate the environmental crisis and promote sustainable development in agriculture.https://www.mdpi.com/2077-0472/10/11/519electrical conductivityfield trialsion concentrationirrigation district |
| spellingShingle | Weiying Feng Jiayue Gao Rui Cen Fang Yang Zhongqi He Jin Wu Qingfeng Miao Haiqing Liao Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil Agriculture electrical conductivity field trials ion concentration irrigation district |
| title | Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil |
| title_full | Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil |
| title_fullStr | Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil |
| title_full_unstemmed | Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil |
| title_short | Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil |
| title_sort | effects of polyacrylamide based super absorbent polymer and corn straw biochar on the arid and semi arid salinized soil |
| topic | electrical conductivity field trials ion concentration irrigation district |
| url | https://www.mdpi.com/2077-0472/10/11/519 |
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