| Effects of different amount of organic materials combined with desulfurized gypsum on soil improvement and crop yield in saline-sodic soil |
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| DOI：10.7606/j.issn.1000-7601.2019.01.05 |
| Key Words: FGD gypsum organic materials saline-sodic soil crop yield |
| Author Name | Affiliation | | WANG Dan | Shihezi University, Shihezi, Xinjiang 832003 | | HUANG Chao | Xinjiang Tianfu Energy Co.,Ltd., Shihezi, Xinjiang 832003 | | LI Xiao-dong | Shihezi University, Shihezi, Xinjiang 832003 | | LIU Juan | Shihezi University, Shihezi, Xinjiang 832003 | | ZHANG Feng-hua | Shihezi University, Shihezi, Xinjiang 832003 |
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| Abstract: |
| This study was conducted to study the effect of FGD gypsum with organic materials at different ratio on the improvement of saline sodic soil of alluvial fan in Manasi River Basin by monitoring improvement of soil quality and crop yield under drip irrigation. We used the micro zone test method, single FGD gypsum as control (CK:1 000 kg·666.7m-2) and 3 ratios of organic materials were applied: A(1 000 kg·666.7m-2+25 kg·666.7m-2), B (1 000 kg·666.7m-2+50 kg·666.7m-2) and C (1 000 kg·666.7m-2+100 kg·666.7m-2). The results showed that combination of FGD gypsum and organic material significantly decreased soil pH and conductivity, increased soil porosity. Soil aggregates (>0.25 mm) in 0~10 cm and 10~20 cm soil layers were increased by 9.96%, 20.23%, 33.50% and 7.37%, 20.54% and 24.90% by three treatments, respectively. The Na+ concentration in topsoil (0~20 cm) significantly decreased, and the Mg2+ concentration significantly increased, the cotton yield increased by 5.77%, 12.45%, 17.96% compared with the control,respectively. Considering the production input ratio of agricultural production and the effect of comprehensive soil improvement, the combination of 1000 kg FGD gypsum combined with 50 kg organic material/666.7m2 had the best result among all three treatments. |
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