Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions
With the coastal saline-alkali soil as the research object, we carried out a soil column leaching experiment by using desulfurized gypsum, calcium superphosphate, biochar, coal cinder and polymaleic anhydride, all with concentration gradients of 1%, 1.5% and 2%, without adding soil ameliorants as co...
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| Language: | English |
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Zhejiang University Press
2020-06-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
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| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2019.07.220 |
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| _version_ | 1849706973734371328 |
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| author | XIANG Zichen XIU Haifeng MA Kun YANG Shaona ZHONG Bin MA Jiawei RUAN Zebin JIN Wenhao CAO Han LI Yaqian JIN Gaoqi LUO Wenxuan LIU Dan |
| author_facet | XIANG Zichen XIU Haifeng MA Kun YANG Shaona ZHONG Bin MA Jiawei RUAN Zebin JIN Wenhao CAO Han LI Yaqian JIN Gaoqi LUO Wenxuan LIU Dan |
| author_sort | XIANG Zichen |
| collection | DOAJ |
| description | With the coastal saline-alkali soil as the research object, we carried out a soil column leaching experiment by using desulfurized gypsum, calcium superphosphate, biochar, coal cinder and polymaleic anhydride, all with concentration gradients of 1%, 1.5% and 2%, without adding soil ameliorants as controls. The effects of different ameliorants on salinization characteristics and soil quality of coastal saline-alkali soil in eastern Zhejiang were studied, and the suitable ameliorants for the improvement of coastal saline-alkali soil were selected. The results showed that: 1) In the 0-10 cm soil layer after eluting, 1% coal cinder and 2% polymaleic anhydride had the most significant improvement effect for decreasing soil pH. The improvements of soil electric conductivity (EC) and salinity were the most significant in the 1.5% and 2% biochar treatments. The EC decreased by 93.75% and 84.72% compared with the CK, and the salinity decreased by 55.44% and 44.04% compared with the CK. 2) Soil sodium adsorption ratio (SAR) decreased when the ameliorants were added, among which the 2% coal cinder, 2% polymaleic anhydride, 1.5% calcium superphosphate had the most significant improvement effect. 3) Soil chemical properties and fertility could be improved by the 2% calcium superphosphate, 2% biochar, 2% polymaleic anhydride. 4) Different ameliorants had different leaching efficiencies for salt-based cations: 1% and 1.5% calcium superphosphate could significantly reduce potassium, calcium and magnesium ion contents in the soil, respectively; 1% coal cinder had the best effect on sodium and potassium ion contents in the leaching soil; 1.5% and 2% biochars significantly reduced sodium and magnesium ion contents in the soil, respectively; and 1% and 2% polymaleic anhydride significantly reduced sodium and calcium, magnesium ion contents in the soil, respectively. In conclusion, 1.5% polymaleic anhydride, 1.5% or 2% biochar have the best effect of desalting and fertilizing on the coastal saline-alkali soil in eastern Zhejiang. |
| format | Article |
| id | doaj-art-6b8f7486b31a46a6888657d55dcece56 |
| institution | DOAJ |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-6b8f7486b31a46a6888657d55dcece562025-08-20T03:16:03ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552020-06-014634435910.3785/j.issn.1008-9209.2019.07.22010089209Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditionsXIANG ZichenXIU HaifengMA KunYANG ShaonaZHONG BinMA JiaweiRUAN ZebinJIN WenhaoCAO HanLI YaqianJIN GaoqiLUO WenxuanLIU DanWith the coastal saline-alkali soil as the research object, we carried out a soil column leaching experiment by using desulfurized gypsum, calcium superphosphate, biochar, coal cinder and polymaleic anhydride, all with concentration gradients of 1%, 1.5% and 2%, without adding soil ameliorants as controls. The effects of different ameliorants on salinization characteristics and soil quality of coastal saline-alkali soil in eastern Zhejiang were studied, and the suitable ameliorants for the improvement of coastal saline-alkali soil were selected. The results showed that: 1) In the 0-10 cm soil layer after eluting, 1% coal cinder and 2% polymaleic anhydride had the most significant improvement effect for decreasing soil pH. The improvements of soil electric conductivity (EC) and salinity were the most significant in the 1.5% and 2% biochar treatments. The EC decreased by 93.75% and 84.72% compared with the CK, and the salinity decreased by 55.44% and 44.04% compared with the CK. 2) Soil sodium adsorption ratio (SAR) decreased when the ameliorants were added, among which the 2% coal cinder, 2% polymaleic anhydride, 1.5% calcium superphosphate had the most significant improvement effect. 3) Soil chemical properties and fertility could be improved by the 2% calcium superphosphate, 2% biochar, 2% polymaleic anhydride. 4) Different ameliorants had different leaching efficiencies for salt-based cations: 1% and 1.5% calcium superphosphate could significantly reduce potassium, calcium and magnesium ion contents in the soil, respectively; 1% coal cinder had the best effect on sodium and potassium ion contents in the leaching soil; 1.5% and 2% biochars significantly reduced sodium and magnesium ion contents in the soil, respectively; and 1% and 2% polymaleic anhydride significantly reduced sodium and calcium, magnesium ion contents in the soil, respectively. In conclusion, 1.5% polymaleic anhydride, 1.5% or 2% biochar have the best effect of desalting and fertilizing on the coastal saline-alkali soil in eastern Zhejiang.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2019.07.220coastal saline-alkali soilameliorantsoil fertilityelution |
| spellingShingle | XIANG Zichen XIU Haifeng MA Kun YANG Shaona ZHONG Bin MA Jiawei RUAN Zebin JIN Wenhao CAO Han LI Yaqian JIN Gaoqi LUO Wenxuan LIU Dan Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions 浙江大学学报. 农业与生命科学版 coastal saline-alkali soil ameliorant soil fertility elution |
| title | Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions |
| title_full | Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions |
| title_fullStr | Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions |
| title_full_unstemmed | Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions |
| title_short | Effect of different ameliorants on coastal saline-alkali soil in eastern Zhejiang under elution conditions |
| title_sort | effect of different ameliorants on coastal saline alkali soil in eastern zhejiang under elution conditions |
| topic | coastal saline-alkali soil ameliorant soil fertility elution |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2019.07.220 |
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