不同棚龄及种植期对土壤微生物代谢功能的影响
发布时间：2019-05-17 04:18
【摘要】：为了解不同年限(3、6、9、15年)及不同种植期(定植期、坐果期、盛果期、拉秧期)的设施棚室土壤微生物对碳源利用的变化趋势,对土壤理化性质和土壤微生物碳源利用进行了检测分析。结果表明:种植年限增加导致棚室土壤pH约降低0.52,土壤可溶性盐分、总磷及总碳随着棚龄增加逐渐累积。不同棚龄土壤中,9年棚室微生物碳源代谢活性最高,15年棚室有所下降,但差别不显著。与不同棚龄棚室土壤代谢差异显著相关的碳源有15种。不同种植期土壤样本中,微生物群落对各类碳源代谢均呈现坐果期最强,拉秧期最弱的特征,并且差异显著,与其代谢差异显著相关的碳源19种。
[Abstract]:In order to understand the changing trend of carbon source utilization in greenhouse soil of different years (3, 6, 9, 15 years) and different planting stages (planting stage, fruiting stage, seedling stage), the carbon source utilization of greenhouse soil microorganisms in different years (3, 6, 9, 15 years) and different planting stages (planting period, fruiting stage, seedling stage). The physical and chemical properties of soil and the utilization of carbon source of soil microorganisms were detected and analyzed. The results showed that the pH of shed soil decreased about 0.52 with the increase of planting years, and the soil soluble salt, total phosphorus and total carbon accumulated gradually with the increase of shed age. Among the soils of different shed ages, the metabolic activity of microbial carbon sources was the highest in 9 years, and decreased in 15 years, but the difference was not significant. There were 15 kinds of carbon sources significantly related to the difference of soil metabolism in different shed ages. Among the soil samples at different planting stages, microbial communities showed the strongest carbon metabolism at fruiting stage and the weakest at seedling stage, and the difference was significant. 19 kinds of carbon sources were significantly related to the metabolic difference.
【作者单位】： 陕西省微生物研究所;
【基金】：陕西省科学院青年人才培养资助项目(2013K-25) 陕西省农业科技创新与攻关资助项目(2015NY088)
【分类号】：S154.3
，
本文编号：2478796
[Abstract]:In order to understand the changing trend of carbon source utilization in greenhouse soil of different years (3, 6, 9, 15 years) and different planting stages (planting stage, fruiting stage, seedling stage), the carbon source utilization of greenhouse soil microorganisms in different years (3, 6, 9, 15 years) and different planting stages (planting period, fruiting stage, seedling stage). The physical and chemical properties of soil and the utilization of carbon source of soil microorganisms were detected and analyzed. The results showed that the pH of shed soil decreased about 0.52 with the increase of planting years, and the soil soluble salt, total phosphorus and total carbon accumulated gradually with the increase of shed age. Among the soils of different shed ages, the metabolic activity of microbial carbon sources was the highest in 9 years, and decreased in 15 years, but the difference was not significant. There were 15 kinds of carbon sources significantly related to the difference of soil metabolism in different shed ages. Among the soil samples at different planting stages, microbial communities showed the strongest carbon metabolism at fruiting stage and the weakest at seedling stage, and the difference was significant. 19 kinds of carbon sources were significantly related to the metabolic difference.
【作者单位】： 陕西省微生物研究所;
【基金】：陕西省科学院青年人才培养资助项目(2013K-25) 陕西省农业科技创新与攻关资助项目(2015NY088)
【分类号】：S154.3
，
本文编号：2478796
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