关键词: 粮食, 粮食, 生产系统, 趋势分析

Abstract: The investigation of farm ecological environment is not only essential for agricultural development, but also an important element in establishing natural harmonious. Based on field survey and related documents, it is found that the farm environment in the northeastern is deteriorating in the recent years, which is manifested by decreased physical and chemic quality of soil, aggravating biological foe and incremental chemical pollution. It is possibly caused by either the nature itself or the human behaviors. Some active and effective measures should be taken to prevent the northeastern farm ecological environment from worsening, including production management standardization, institutional consummation, scientific and technical supports managing measures transformation.