河北省畜禽粪尿养分资源分布及其污染潜力分析

Assessment of the production of animal manure and its pollution potential in Hebei province

利用统计资料和文献数据,结合国内外研究,确定河北省畜禽粪尿资源的计算参数和计算方法。估算了河北省畜禽粪尿产生量及其中的氮磷养分的含量、CODCr含量和单位耕地承载量,旨在为制订河北省畜牧业发展的政策法规提供依据。结果表明:2004年河北省畜禽粪尿耕地承载量为38 t/hm2、单位耕地粪尿N承载量为182 kg/hm2、单位耕地粪尿P承载量为54 kg/hm2。畜禽粪尿CODCr、BOD5、NH3-N总量分别为524、442、52万t。耕地畜禽粪尿承载量在空间上分布极不平衡,承载量大的主要分布在石家庄、唐山、邯郸、保定地区。

The production of animal manure, the amounts of nitrogen and phosphorus, and the chemical oxygen demand of the manure in Hebei province were analyzed based on＇ statistical data and literatures. Results indicated that the mean amounts of animal manure, N, P produced were equivalent to 38 t, 182 kg, 54 kg/hm^2 of agricultural land, respectively in 2004. The mean amounts of CODer, BOD5, NH3-N in animal manure were 5.24,4.42,0.52 million tons, respectively. The production was spatially very uneven, suggesting that some areas, such as Shijiazhuang, Tangshan, Handan and Baoding, received much higher doses than the mean amounts.