摘要
为了了解北京农业废弃物的现状,探讨农业废弃物的循环利用模式,根据统计数据与公开发表文献,利用作物秸秆籽粒系数与畜禽粪便排泄系数法对北京农业废弃物数量及养分进行了估算。结果表明:2008年北京农作物秸秆总量达220万吨,氮、磷、钾含量分别为2.0、1.1和2.7万吨,畜禽粪便总量达786万吨,氮、磷、钾含量分别为5.47、1.59和2.65万吨。北京农业废弃物种类虽多,但分布集中,玉米秸秆量占作物秸秆总量的80%,畜禽粪便中猪粪、牛粪占到畜禽粪便总量的79%。农业废弃物的循环利用是提高资源利用率、改善环境的重要途径,以堆肥、以太阳能沼气或食用菌生产为纽带的循环利用模式是当前农业废弃物循环利用的重要模式。
In order to know the situation of Beijing agriculture wastes and its recycle model,the amount of agriculture wastes and its nutrient resources were estimated by crop straws seed coefficient and animal manure excretion coefficient method.The results showed that there was more than 2.2 million tons crop straws,in 2008,which included the amount of nitrogen,phosphorus,potassium nutrient were 20,11,27 thousand tons.There was more than 7.86 million tons animal manure,which included the amount of nitrogen,phosphorus,potassium nutrient were 54.7,15.9,26.5 thousand tons.At last three kinds recycle model of agriculture wastes were proposed.
出处
《国土与自然资源研究》
北大核心
2011年第4期85-87,共3页
Territory & Natural Resources Study
基金
北京市科学技术研究院青年骨干计划(2011-5)
关键词
农业废弃物
循环利用
北京
agriculture wastes
recycle use
Beijing
