A field experiment was conducted to investigate the combined application effects of fly ash (FA) (0, 5%, 10%, and 15% (/) soil) and polyacrylamide (PAM) (0, 0.006% and 0.012% (/) soil) on the edge of Hobq Desert in Inner Mongolia, China from May 2016 to October 2018. Seven different ratios of FA and PAM were selected as evaluation objects, a total of 14 soil property indices and 9 growth indices were selected as evaluation indicators, and the entropy weight method was employed to evaluate the soil physicochemical properties and vegetation growth performances under FA and PAM amendments. The results showed that the F15P1 (15% FA + 0.006% PAM) and F5P1 (5% FA + 0.006% PAM) were the effective treatments for soil improvement and growth respectively. Considering the soil properties and growth in 2016-2018 synthetically, the highest score was observed in the F5P1, followed by the F5P2 (5% FA + 0.012% PAM) and F10P1 (10% FA + 0.006% PAM) treatments. The optimal amounts for FA and PAM should be recommended as 5% and 0.006%, respectively.
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| http://dx.doi.org/10.3390/e22020148 | DOI Listing |
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