Studies on the applications of Trichoderma and compound microbial agents in the restoration of Scirpus mariqueter wetland
In this study,the feasibility of promoting wetland restoration using the Trichoderma and the microbial agents was investigated.The analysis focused on the effects of different concentrations of Trichoderma and composite microbial agents on the characteristics of Scirpus mariqueter inhabiting Dongtan,Nanhui,which include plant number,plant height growth rate,rhizosphere soil physical and chemical properties,and enzyme activities.Two types of soils,A and B,representing the typical soil conditions were collected.The results indicated that the microbial preparations from two soil samples had a positive impact on the growth of S.mariqueter.The optimal density of Trichoderma in soils A and B was 44.78 kg/ha and 29.85 kg/ha,respectively.For the compound microbial preparations,the optimal concentrations were found to be 7.46 L/ha and 14.93 L/ha,respectively.The corresponding plant growth rate was observed to be 669％,200％,846％and 288％while the plant height growth rate was 186％,180％,136％and 280％,respectively.The addition of microbial preparations influenced the content of ammonium nitrogen,nitrate nitrogen and total phosphorus in the soil.The influenced in-cluded also the activities of soil urease and alkaline phosphatase.These changes contributed to the pro-motion of plant growth.Overall,our findings demonstrated that the application of suitable microbial a-gents can effectively enhance the number and height of S.mariqueter.What we found provided a prac-tical and efficient approach to the artificial restoration of S.mariqueter wetlands,proved the potential of wetland conservation and restoration effort.
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