Work

Effects of Flue Gas Desulfurization Gypsum and Coal Fly Ash Treatments on Coastal Saline Soils in China: A Field Study

Year: 2025

Type: article

Abstract: Soil salinization in coastal areas is a serious problem restricting agricultural development. This field study aimed to explore the effects of flue gas desulfurization gypsum (FGDG) and coal fly ash (CFA) in combination with irrigation on coastal saline soils in China. Six different treatments (C1–C4: FGDG 4.5–15.0 t/hm2; C5 and C6: FGDG 4.5 t/hm2 combined with CFA 2.0 and 3.5 t/hm2) were established, and soil properties such as pH, electrical conductivity (EC), and organic matter (OM) content were analyzed. The results showed that compared with the control group, the addition of FGDG (4.5 t/hm2 to 15 t/hm2) slightly increased the soil pH, and the combined application of FGDG and CFA made the soil pH closer to neutral. The application of FGDG combined with two rounds of irrigation could reduce the soil EC, and the mixed application of FGDG and CFA further reduced the soil EC by about 6.7% in the 0–20 cm layer. The application of FGDG combined with irrigation showed no significant effect on the soil OM content. In general, the moderate application of FGDG and CFA can effectively improve the physicochemical properties of soil, potentially contributing to more sustainable agricultural practices in coastal regions.

Source: Processes

DOI: 10.3390/pr13061937

Authors: Dawei Hou, Jingnan Zhang, Xin Wang, Hao Wu, Lingxiao Zhan, Wenrui Li

Institutions: China Datang Corporation (China), Nanjing Normal University, Southeast University

Language: English

Topic: Soil Management and Crop Yield

Subfield: Soil Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Climate action, Life on land, Zero hunger

Open Access status: gold

Estimated APC paid: $2,896