黑土资源及其退化防治宋桂茹李泽鸿姚玉霞曹杰（吉林农业大学测试中心土地资源退化对人类生存、全球环境及农、林、牧生产已产生巨大影响。黑土资源这一素有北大仓之称，是东北最重要的粮食基地，是我国肥沃的土壤之一，正面临资源退化这一严峻问题。因此，对黑土资源退化... Black soil resources and their prevention and control Song Guiru Li Zehong Yao Yuxia Cao Jie (Jilin Agricultural University Testing Center Degradation of land resources has a tremendous impact on human survival, global environment and the production of agriculture, forestry and animal husbandry. Is the most important food base in the Northeast and one of the fertile soils of our country and is facing the serious problem of resource degradation ... Therefore, the degradation of black soil resources ...