Impact of flue gas desulfurization gypsum and lignite humic acid application on soil organic matter and physical properties of a saline-sodic farmland soil in Eastern China

文献类型： 外文期刊

第一作者： Nan, Jiangkuan

作者： Nan, Jiangkuan;Chen, Xiaomin;Lashari, Muhammad Siddique;Deng, Jianqiang;Chen, Can;Du, Zhenjie

作者机构：

关键词： Coastal saline-sodic soil;FGD gypsum;Lignite humic acid;Soil organic matter content;Soil physical properties

期刊名称：JOURNAL OF SOILS AND SEDIMENTS （ 影响因子：3.308； 五年影响因子：3.586 ）

ISSN： 1439-0108

年卷期： 2016 年 16 卷 9 期

页码：

收录情况： SCI

摘要： Appropriate land management is important for improving the soil quality and productivity of the saline-sodic farmland. A recent study has revealed that flue gas desulfurization (FGD) gypsum and lignite humic acid application enhanced the salt leaching and crop production. The purpose of this study was to investigate the effects of applied FGD gypsum and lignite humic acid (powder) on the soil organic matter (SOM) content and physical properties. This study was based on a field experiment of five consecutive rapeseed-maize rotations in a saline-sodic farmland soil (Aquic Halaquepts) at coastal area of North Jiangsu Province, China. The soil is sandy clay loam texture with pH of 8.43 and clay content of 185 g kg(-1). Six treatments included three FGD gypsum rates (0, 1.6, and 3.2 Mg ha(-1)) and two lignite humic acid rates (0 and 1.5 Mg ha(-1)). The amendments were incorporated into 0-20 cm soil depth manually every year. Soil samples were collected from each treatment and analyzed for soil organic matter, water-stable aggregates (wet sieving method), bulk density (clod method), water retention capacity (pressure plate apparatus), total porosity (calculated from bulk density and particle density), and microporosity (calculated from water content at 0.01 MPa). After 5 years, the SOM and soil physical properties were significantly (P < 0.05) affected by the application of FGD gypsum and lignite humic acid, especially at the 0-20 cm soil depth. The highest amount of SOM with best soil physical condition was observed in the field which was treated with FGD gypsum at 3.2 Mg ha(-1) with lignite humic acid, and the SOM, total porosity (TP), microporosity (MP), mean weight diameter (MWD), water-stable macroaggregate (WSMA), and available water content (AWC) were increased by 22.8, 6.34, 23.2, 48.1, 55.5, and 15.8 %, respectively, while the bulk density (BD) was decreased by 5.9 % compared to no amendments applied. The generalized linear regression analysis showed that the SOM explained 42.9, 55.0, 48.5, and 54.2 % of the variability for BD, MWD, WSMA, and MP, respectively. This study illustrates the benefits of applying FGD gypsum and lignite humic acid for increasing the soil organic matter content and improving the soil physical properties and suggests a great potential for ameliorating saline-sodic farmland soil (Aquic Halaquepts) by using combined amendment of FGD gypsum with lignite humic acid.

分类号：

  • 相关文献

[1]Effects of applying flue gas desulfurization gypsum and humic acid on soil physicochemical properties and rapeseed yield of a saline-sodic cropland in the eastern coastal area of China. Nan, Jiangkuan,Chen, Xiaomin,Lashari, Muhammad Siddique,Wang, Yuanming,Guo, Zhichuang,Wang, Xiaoyang,Du, Zhenjie. 2016

[2]Elevation and Land Use Types Have Significant Impacts on Spatial Variability of Soil Organic Matter Content in Hani Terraced Field of Yuanyang County, China. Li Feng-bo,Zhou Xi-yue,Xu Chun-chun,Feng Jin-fei,Fang Fu-ping,Lu Guang-de,Ni Hui-xiang,Yue chao,Yang Xiu-mei. 2015

[3]Soil Organic Matter Spatial Distribution Change over the Past 20 Years and Its Causes in Northeast. Yao, Yanmin,Tang, Huajun,Tang, Pengqin,Yu, Shikai,Wang, Deying,Si, Haiqing,Chen, Youqi,He, Yingbin. 2013

[4]Studies on Soil Organic Matter Content Mapping Using EO-1 Hyperion Data. Yu, Shikai,Yao, Yanmin,Wang, Deying,Si, Haiqing. 2013

作者其他论文 更多>>

微信小程序