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当前位置: 首页 > 文章 > 松辽平原玉米带黑土肥力退化机理研究 土壤学报 2006,43 (1) 79-84
Position: Home > Articles > MECHANISM OF FERTILITY DEGRADATION OF BLACK SOIL IN CORN BELT OF SONGLIAO PLAIN Acta Pedologica Sinica 2006,43 (1) 79-84

松辽平原玉米带黑土肥力退化机理研究

作  者：
赵兰坡;王鸿斌;刘会青;王艳玲;刘淑霞;王宇
单  位：
吉林农业大学资源与环境学院吉林省生态恢复与生态系统管理省部共建国家重点实验室培育基地
关键词：
松辽平原玉米带;黑土;肥力退化
摘  要：
通过田间调查和土壤肥力指标分析,探讨了松辽平原玉米带黑土肥力退化的原因和机理。结果发现,现行的以小四轮拖拉机为主要动力的耕作制度下,土壤剖面中耕层与犁底层的界面为“波浪型”,而年年进行秋翻的玉米田,其耕层与梨底层的界面为“平面型”。而且两者耕层土壤的养分含量和理化性质等指标也有明显差异。研究还发现,现行的以无机氮磷肥为主的施肥制度和玉米连作种植制度对土壤养分平衡有很大影响。因此认为,现行的不合理的耕作、施肥及玉米连作制度是导致松辽平原玉米带黑土肥力退化主要原因。
译  名：
MECHANISM OF FERTILITY DEGRADATION OF BLACK SOIL IN CORN BELT OF SONGLIAO PLAIN
作  者：
Zhao Lanpo Wang Hongbin Liu Huiqing Wang Yanling Liu Shuxia Wang Yu(College of Resource and Environmental Science,Jilin Agricultural University;Key Laboratory for Ecological Restoration and Ecosystem Manadement of Jilin Province,Changchun 130118,China)
关键词：
Corn belt of the Songliao Plain;Black soil;Fertility degradation
摘  要：
Through field investigation and soil fertility index analysis,causes and mechanism of fertility degradation of(black) soil in the Songliao Plain were explored.The results show that the interface between the cultivated layer and the plough sole in the soil profile was undulated under the current cropping system mainly using small-sized four-wheeled tractors and flat under the cropping system of deep plowing annually in the fall.Besides,the two systems were significantly different in soil nutrient(content) and soil physical and chemical properties. The study also discovered that both the present fertilization system based on(inorganic) N and inorganic P and the present system of continuous cropping of corn had greats effect on balance of soil nutrients.It thus follows that the present improper systems of cultivation,fertilization and continuous corn cultivation are the main causes of fertility degradation of black soil in the corn belt of the Songliao Plain.

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