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分析入侵植物刺萼龙葵(Solanum rostratum)在不同生育期根际土壤真菌多样性及土壤酶活性变化,探讨刺萼龙葵入侵对土壤微生态的影响机制,以期寻找防治刺萼龙葵的最佳时期。本试验利用土壤平板法对刺萼龙葵根际土壤真菌进行培养,共鉴定真菌22个属,并且从生长初期到开花期土壤真菌多样性显著增加;从生长初期到开花期根际土壤过氧化氢酶、过氧化物酶、多酚氧化酶、脲酶、脱氢酶、转化酶和蛋白酶活性变化显著;Pearson相关分析发现,刺萼龙葵从生长初期到开花期根际土壤真菌多样性与过氧化物酶活性相关性并不显著,而与其余6种土壤酶活性具有显著的相关性;主成分分析发现,刺萼龙葵开花期、现蕾期和四叶期与空白土壤和生长初期发生了显著的变化。因此,随着刺萼龙葵的生长,其根际土壤真菌多样性及土壤酶活性均发生改变。
The change of fungal diversity and soil enzyme activity in invasive rhizosphere soil of Solanum rostratum was analyzed. The mechanism of soil micro-ecology of Solanum rostratum invasion was discussed in order to find out the best way to control solanum nigrum Good times. In this experiment, soil rhizosphere soil fungi were cultured by soil plate method, and 22 fungi were identified, and the fungal diversity increased significantly from the beginning of growth to the flowering stage. The rhizosphere soil peroxidation Pearson correlation analysis showed that the fungal diversity of rhizosphere soils of Solanum lycopersicum from the early growth stage to the flowering stage The correlation of oxidase activity was not significant, but significant correlation with other six soil enzyme activities. Principal component analysis showed that the flowering stage, budding stage and four-leaf stage of Somalum solanum with blank soil and early growth stage Significant changes. Therefore, with the growth of Solanum glaucum, the rhizosphere soil fungi diversity and soil enzyme activity were changed.