论文部分内容阅读
吉林省素有“黑土地之乡”的美誉,世代生活在这里的百姓中流行着一句顺口溜:“捏把黑土冒油花,插根筷子能发芽”。黑土地地势平坦,土壤肥沃,耕作条件优越,“黄金玉米带”、“大豆之乡”使吉林省成为名闻遐迩的中国主要商品粮生产基地。近年来,由于大规模的项目建设和过度开发,植被受到严重破坏。化肥农药大量施用取代了深松、轮作、培肥等传统耕种习惯,土地退化,土壤有机质含量明显
Jilin Province is known as “the land of black land” in the world. People living in this area for generations have a jingle in the world: “Pinch the black soil to spend flowers and insert chopsticks to germinate.” The black land has the features of flat terrain, fertile soil and excellent farming conditions. “Golden Corn Belt” and “Home of Soybean” make Jilin Province one of the most famous commodity grain production bases in China. In recent years, due to large-scale project construction and over-exploitation, vegetation has been severely damaged. Large-scale application of chemical fertilizers and pesticides replaces the traditional farming practices such as subsoiling, rotation and fertilization. Land degradation and soil organic matter content are obvious