科研之友
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摘要
Hydraulic fracturing is the process of injecting solutions at high pressure to break apart rock formations and increase efficiency of natural gas extraction. The solutions are recovered and have been land-applied as a disposal technique. The objective of this greenhouse study was to evaluate the effects of inorganic fertilizer, broiler litter, or Milorganite (R), and soil depth interval on the growth of Bermuda grass [Cynodon dactylon (L.) Pers] in soil from a site that had been contaminated with fracturing fluid and was devoid of vegetation. In soil from 0-15cm depth, initial electrical conductivity (ECe), Na, and Cl levels were 14.5dS/m, 2994mg/kg, and 5603mg/kg, respectively. For the 0-30cm depth, initial ECe, Na, and Cl levels were 14.1dS/m, 2550mg/kg, and 5020mg/kg, respectively. Bermuda grass was sprigged and harvested after nine weeks. Addition of inorganic fertilizer, broiler litter, or Milorganite (R) resulted in 290, 241, and 172%, respectively, greater shoot biomass compared to unamended soil. Plants grown in the 0-30cm depth soil had greater root biomass (95%), length (67%), volume (61%), and surface area (65%) compared to those grown in soil from the 0-15cm depth. Fertilization and cultivation may be useful in revegetating sites contaminated with fracturing fluid.
- 出版日期2015-11-17
