@Article{2009, title = {我国农业资源环境保护问题研究——以发展农业循环经济为立足点}, author = {李长健,卞晓伟}, journal = {中国农业信息}, volume = {}, number = {5}, pages = {}, numpages = {}, year = {2009}, month = {}, doi = {}, publisher = {《中国农业信息》 编辑部} }