一、蚯蚓的基础知识1.蚓蚯的习性(1)生活环境状态蚯蚓一般生活在土壤的上层,下层逐渐减少。土壤的状态对蚯蚓有很重要的关系。蚯蚓生活所必须的食物,含在土壤中。土壤上层所含有的落叶、枯草、菜屑等,经微生物分解,形成含有植物质的腐植质,这就是蚯蚓的食物。土壤中含有适量的水分也是蚯蚓生存所必 First, the basic knowledge of earthworms 1 habits of earthworms (1) living conditions Earthworms generally live in the upper soil, the lower the gradual decrease. The state of soil has a very important relationship with earthworms. Earthworms necessary food, contained in the soil. Top soil contains deciduous, hay, chopped vegetables, etc., decomposed by microorganisms, the formation of humus containing plant material, which is earthworms food. The soil contains the right amount of water is also necessary for the survival of earthworms