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Assessment of the Nitrogen Estimation of Fecal Residue and Waste Water Production Amount and its Risk Predict in Nanning City
Abstract:
The computational parameter and statistical methods of pig fecal equivalent of the livestock and poultry manure in nanning County is determined in the current project based on the several surveys of local farming conditions, and pig excrement equivalent number from 2004 to 2009 are calculated. Based on pig fecal equivalent, we forecast poultry excrement load of early warning value from 2010 to 2015 year by using the GM (1, 1) model. The result indicates that from 2010 to 2015 the livestock manure emissions in nanning city increase from 18063400 tons to 19168900 tons, the average farm manure load reached 27.70 t/ha from 26.11 t/ha, the R value increases gradually, the agricultural non-point pollution thereat degree of animal manure actually assures the tendency of aggravating.
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2399-2405
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May 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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