纳米碳溶胶对碱性土壤pH和养分含量的影响

发布时间：2018-06-03 06:24

本文选题：纳米碳溶胶 + 碱性土壤　；参考：《土壤》2017年05期

【摘要】：采用土柱淋洗试验和土盆试验,研究了浓度分别为10、20和40 mg/L的纳米碳溶胶对碱性土壤p H、EC值和速效养分含量的影响。结果表明:纳米碳溶胶能够明显降低碱性土壤p H和EC值,最大降低幅度分别达到0.49个单位和0.14 m S/cm,且纳米碳溶胶浓度越高,降低效果越明显。纳米碳溶胶能够明显增加0~80 cm各土层硝态氮含量,3个处理平均增幅分别达到21.99%、27.34%和25.57%;但对铵态氮含量影响较小。纳米碳溶胶淋洗可提高各土层中有效磷含量,但不同浓度纳米碳溶胶在不同土层中表现效果不同,3个处理有效磷含量平均增加10.10%、13.72%和12.30%。纳米碳溶胶对土壤钾素有较好的活化效果,各土层速效钾含量均有明显增加,3个处理平均增幅分别达到6.62%、12.54%和13.18%。上述结果表明纳米碳溶胶能够明显降低碱性土壤pH和EC值,提高速效养分含量,对碱性土壤有较好的改良效果。
[Abstract]:The effects of nano-carbon sol with concentrations of 10 ~ 20 and 40 mg/L on the EC value and available nutrient content of alkaline soil were studied by soil column leaching test and soil-basin test. The results showed that the pH and EC values of alkaline soil could be significantly decreased by nano-carbon sol, and the maximum reduction range was 0.49 units and 0.14 m S / cm, respectively. The higher the concentration of nano-carbon sol, the more obvious the reduction effect was. Nano-carbon sol can obviously increase nitrate nitrogen content in 0 ~ 80cm soil layer, the average increase of the three treatments is 21.99% and 25.57% respectively, but the effect on ammonium nitrogen content is relatively small. The leaching of nano-carbon sol can increase the content of available phosphorus in different soil layers, but the effect of different concentration of nano-carbon sol in different soil layer is different. The available phosphorus content of three treatments increased by 10.10% 13.72% and 12.30% on average. Nano-carbon sol had better activation effect on soil potassium, and the content of available potassium in each soil layer increased obviously, and the average increase of the three treatments reached 6.62% 12.54% and 13.1818%, respectively. The results showed that nano-carbon sol could significantly reduce pH and EC value of alkaline soil, increase the content of available nutrients, and improve alkaline soil.
【作者单位】：中国烟草总公司郑州烟草研究院烟草行业生态环境与烟叶质量重点实验室;河南中烟工业有限责任公司;
【基金】：国家科技支撑计划项目(2012BAC08B08) 郑州烟草研究院科技项目(112013CZ0580)资助
【分类号】：S156.4

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