期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 69, 期 45, 页码 13386-13397出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.1c04121
关键词
sodium alginate; charcoal; soil remediation; pH-responsive; slow-release
资金
- National Natural Science Foundation of China [32071713]
- Natural Science Funds for Distinguished Young Scholars of Heilongjiang Province [JQ2019C001]
- National Forestry and Grassland Intellectual Property Conversion and Application Project [KJZXZH202102]
The pH-responsive gel spheres prepared in this study showed significant effects in soil remediation and promoting crop growth, providing significant potential value for improving soil conditions and promoting crop growth in agricultural applications.
In this work, pH-responsive gel spheres for controlled release of humic acid (CSGCHs) were prepared by an integrated instillation technology using a composite material of sodium alginate (SA) and charcoal activated carbon (CAC) as a carrier, and their slow-release performance, pH-responsive performance, and soil amendment performance were investigated. The results showed that the prepared CSGCH was uniform in size with obvious base responsiveness. Soil remediation experiments revealed that CSGCH could play a good role in the remediation of different types of soils. After 50 days of remediation, the content of nutrients and organic matter in the soil increased significantly and the pH and salt content of saline soils decreased by 15.2 and 29.8%, respectively. The plant experiment showed that CSGCH could effectively promote the growth of crops. Therefore, the prepared soil conditioner has a great potential value for improving soil conditions and promoting crop growth in agricultural applications.
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