蚯蚓,通称“地龙”,它在改良土壤,保护环境,医用治病和用作畜,禽、水产的动物蛋白饲料等方面发挥着很大的作用。一、蚯蚓能改良土壤。由于蚯蚓的活动,能加速土壤团粒结构的形成。另外蚯蚓粪可以肥田,达尔文曾经说过:“除了蚯蚓的粪粒之外没有沃土”。 Earthworm, commonly known as “earthworm”, plays an important role in improving the soil, protecting the environment, medical treatment and use as animal protein feed for livestock, poultry and aquatic products. First, earthworms can improve the soil. Earthworm activity can accelerate the formation of soil aggregate structure. In addition, earthworm excrement can be fertilized. Darwin once said: “There is no fertile ground except earthworms.”