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利用BIOLOG技术研究了新疆富蕴地震断裂带6种次生植物对根际土壤微生物碳源利用的影响.结果表明:多数植物根际土壤养分显著高于对照.6种根际土壤的平均颜色变化率差异显著,且均高于对照.次生植物不影响根际土壤微生物碳源利用的丰富度,但改变了其优势度和均匀度.不同处理根际土壤微生物碳源利用存在差异,主要体现在对糖类、氨基酸类、羧酸类的利用上.断裂带上次生植物的出现使土壤微生物利用碳源的类型由酚类向糖类、羧酸类转变.土壤速效钾含量与土壤微生物对聚合物(r=-0.84)、胺类(r=-0.83)的利用呈负相关.新疆地震断裂带的次生植物能显著增强土壤微生物的碳源利用能力,改变碳源利用类型.密刺蔷薇和蓍在提高土壤微生物碳源利用能力和改善土壤养分方面效果最佳.
BIOLOG technology was used to study the effect of six secondary plants on the microbial carbon sources in the rhizosphere of the Fuyun earthquake fault zone in Xinjiang.The results showed that the rhizosphere soil nutrients of most plants were significantly higher than that of the control.The average color change of the six rhizosphere soils The difference was significant and higher than the control.The secondary plants did not affect the richness of microbial carbon source utilization in rhizosphere soil, but changed their dominance and evenness.Different treatment rhizosphere soil microbial carbon utilization, there are differences, mainly reflected In the utilization of carbohydrates, amino acids and carboxylic acids, the occurrence of secondary plants on the rupture zone changed the types of carbon sources used by soil microbes from phenols to carbohydrates and carboxylic acids, and the contents of available potassium and soil microbes There was a negative correlation between the utilization of polymers (r = -0.84) and amines (r = -0.83) .The secondary plants in the seismic fault zone of Xinjiang could significantly enhance the carbon source utilization ability of soil microorganisms and change the types of carbon source utilization Rose and Achillea are most effective in improving soil microbial carbon utilization and improving soil nutrients.