| Effects of coal-fired flue gas desulfurated waste residue application on sweet sorghum cultivation on alkali soil |
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| DOI：10.7606/j.issn.1000-7601.2010.06.37 |
| Key Words: coal-fired flue gas desulfurated waste residue saline-alkali soil soil amelioration sweet sorghum |
| Author Name | Affiliation | | WANG Bin | College of Agriculture，Ningxia University, Yinchuan, Ningxia 750021, China | | XIAO Guoju | R & D Center for Application of New Technology，Ningxia University，Yinchuan, Ningxia 750021, China | | YANG Juan | College of Iife Sciences, Ningxia Univeriy, Yinchuan, Ningxia 750021, China | | ZHENG Guoqi | College of Iife Sciences, Ningxia Univeriy, Yinchuan, Ningxia 750021, China | | XU Xing | College of Agriculture，Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| The purpose of this study was to explore the effects of coal-fired flue desulfurated waste residue (Here-inafter abbreviated as desulfurated waste residue) application on sweet sorghum 〔Soughum bicolor(L.)Moench var. suc-
charafum konem〕 cultivation on alkali soil. Based on field and pot experiments，we studied soil properties，including bulk density, pH, total salt content, and plant eco-physiological traits, including germination rate, net photosynthetic
rate, plant height and biomass yield . The field experiment was carried out on alkali soil of Xidatan, Pingluo of Ningxia,
and the desulfurated waste residue was added at the ratio of0, 4.50, 9.00, 13.50, 18.00 t/hm2, respectively. The re-sults showed that , with the application of desulfurated waste residue in alkali soil, soil bulk density，pH, total salt content all decreased greatly, while germination rate，net photosynthetic rate, plant height and biomass yield of sweet sorghum dis-played an opposite trend. Our findings indicated that the application of desulfurated waste residue could ameliorate alkali soil markedly and enhance the growth of sweet sorghum on such soil . But the amelioration effects were not in linear relation with the amount of desulfurated waste residue, and the 4.50 t/hm2 treatment achieved the best amelioration effect. |
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