20世纪以来美国生猪粪肥养分管理变迁研究

Research on Changes of U.S. Hog Manure Nutrient Management since 20th Century

20世纪以来,美国生猪粪肥管理在观念、政策、技术上经历了巨大的变化,并在养分管理和农业面源污染治理方面积累了宝贵的经验。作为传统生猪养殖大国和养殖粪污最多的国家之一,中国应借鉴美国生猪粪肥养分管理发展经验:建立养殖粪肥种植业利用的综合养分管理政策体系;落实综合养分管理技术措施;加强对综合养分管理实践活动的财政支持力度。

Since 20 th century, U.S. hog manure management has undergone tremendous changes on concept-policy-technology, accumulating treasury experiences of reducing agricultural non-point source pollution along with nutrient management. As a traditional hog raising country with the largest amount of manure to be processed in the world, China needs to draw on the U.S.experiences as follows: Setting up policy systems to promote manure application for crops;Adopting technical measures for comprehensive nutrient management;Strengthening financial support for practices of comprehensive nutrient management.