安徽省畜禽养殖业粪便成分调查及排放量估算

摘要

The contents of nutrients and heavy metals, including N, P, K, Pb, Cd, Cr, Cu, Zn, Hg and As, etc. in the manure of different animals were surveyed and tested in Anhui Province. According to the data in Anhui Statistical Yearbook, the total manure production from the animal husbandry in Anhui Province in 2008 was estimated. Results showed that the N, P and K nutrients contents in the animal manure in 2008 were 113 235,58 441 and 80 573 t, which equalled to 246 200 t urea, 1 115 900 t calcium phosphate and 161 800 t KC1, the N content accounted for about 18. 20% of the total maximum N carrying capacity of farmland in Anhui Province. The production amount of Pb, Cd, Cr, Cu, Zn and As was 72.59, 2.30, 125.97,977.96, 1 123.98 and 32.67 t, and that of Hg was 171.41 kg. However, the long-term application of animal manure in farmland may result in the risks of heavy metals exceeding the standards.%通过调查采样及测试分析的方法,分析了安徽省主要畜禽养殖品种粪便中的氮、磷、钾养分含量,以及Pb、Cd、Cr、Cu、Zn、Hg、As 等重金属的含量,根据安徽省统计年鉴中的数据对2008年安徽省畜禽养殖业粪便总排放量进行估算,结果表明:2008年安徽省畜禽养殖业产生的粪便中纯氮、磷、钾养分的排放量分别约为113 235、58 441和80 573t,相当于24.62万t尿素、111.59万t过磷酸钙和16.18万t氯化钾,以总氮量计算占安徽省耕地最大氮承载量的18.20％.Pb、Cd、Cr、Cu、Zn、As等重金属的产生量分别为72.59、2.30、125.97、977.96、1 123.98、32.67 t,Hg为171.41 kg,畜禽粪便长期大量施用于农田存在着一定的重金属累积超标风险.