土地退化是一个世界性的环境问题,中国是世界上土地退化最严重的国家之一,松嫩平原是一个正处于退化发展过程中的典型地区。目前,松嫩平原大约有22%的土地发生了不同程度的退化,也称荒漠化。至今还没有大面积治理退化土地的有效方法。通过对种植黄花草木樨样地的监测,根据土壤物理化学性质的变化分析了防治退化土壤的效果。结果表明,在种植黄花草木樨后,土壤中的有机质、水解性氮、全氮含量都明显增加。土壤脱盐率较高,土壤中盐分含量、pH值和碱化度明显降低。土壤中硒和钼含量普遍减少。黄花草木樨还可有效地改善土壤的通透性能,土壤容重变小,孔隙度增大。土壤的含水量及田间持水量提高,保水持水能力增强。种植黄花草木樨斯列金1号可提高土壤肥力,改善土壤物理性状,防止或减缓水土流失,而且还可提供丰富的优质牧草,其种籽有重要的经济开发价值。 Land degradation is a worldwide environmental problem. China is one of the most land-degraded countries in the world. Songnen Plain is a typical area undergoing degenerative development. At present, about 22% of Songnen Plain land has undergone some degree of degradation, also known as desertification. So far there is no effective way to treat degenerated land on a large scale. Through the monitoring of planting Habitat for Habitat disease, the effect of preventing and controlling degraded soil was analyzed based on the change of soil physical and chemical properties. The results showed that the contents of organic matter, hydrolyzable nitrogen and total nitrogen in soil increased obviously after the planting of Houttuynia cordata. Soil desalination rate is high, the soil salt content, pH and alkalinity decreased significantly. Soil selenium and molybdenum generally reduce the content. Habitat yellow wood can also effectively improve the permeability of the soil, soil bulk density smaller, porosity increased. Soil water content and field water capacity increase, water retention capacity increased. Planting the yellow flowers of wood 樨 Slieve 1 can improve soil fertility, improve soil physical properties, prevent or slow soil erosion, but also provide rich high-quality forage grass whose seeds have important economic development value.