Effect of Compound Bio-fertilizer on Plant Community Characteristics in Leymus chinensis Steppe

doi:10.11924/j.issn.1000-6850.casb16050174

Abstract

Abstract: In order to explore the effect of compound bio-fertilizer on grassland improvement, an experiment of five compound bio- fertilizers, which were control (CK), humic acid fertilizer (F), molasses fermentation fertilizer (T), alginic acid fertilizer (H) and both three compound bio-fertilizer fertilizers (A), was conducted on Lymus chinensis degenerated grassland to analyze the change of community species and diversity. The results showed that the Lymus chinensis aboveground biomass increased under the treatment of compound biofertilizer, and treatment H had the best increasing effect compared with CK (P ＜0.05), while treatment H also significantly increased underground biomass; treatment A and H significantly decreased community dominance, while increased the importance value of main species, but it was not significant. Shannon Wiener diversity index had a significantly positive correlation with Simpson dominance index and E. Pielou evenness index. In the short term, the application of compound bio-fertilizer did not change the status of constructive species and dominant species, and alginic acid compound bio-fertilizer was the optimum fertilizer to increase Lymus chinensis above-ground biomass yield and promote underground biomass.

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References

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