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| DOI：10.13522/j.cnki.ggps.2017.12.010 |
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| The Effect of Fermented Corn Straw on Fertility of Saline-alkali Soil |
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HAN Jianhong, WANG Xuping, ZHANG Lianke, YU Weijia, JIAO Liyan, WANG Weida
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School of Energy and Environment, Baotou 014010, China; Baotou Radiation Environment Management,Baotou 014010, China; Huize Water(Qingzhou)CO.LTD, Qingzhou 262500, China
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| Abstract: |
| We investigated the effects of fermented corn straw on fertility of saline-alkali Soil based on pot experiments by taking unfermented corn straw as the control. In the experiment, we analyzed the changes in soil fertility after applying a mixture of straw and slugged fermented corn straw at ratios of 1∶1, 2∶1, 3∶1, and 6∶1, at application rates of 1.25 g/kg, 2.50 g/kg, 3.75 g/kg and 5.00 g/kg respectively to a saline-alkali soil. The results showed that applying fermented corn straw significantly improved soil organic matter and bioavailable potassium, but decreased the bioavailable nitrogen and phosphorus. When the ratio of straw to fermented corn straw was 2∶1 and the application rate was 2.50 g/kg, the microbial biomass-C and N were enhanced and they were 0.90 times and 1.07 times higher than those in the original soil; the soil enzymatic activity also increased significantly. In particular, the alkaline phosphatase, urease, cellulase and catalase increased by 54.47%, 37.00%, 33.82%, 59.77% compared to those in the original soil. |
| Key words: corn straw; fermentation; saline-alkali soil; soil fertility |
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