土壤富集法 soil enrichment method
土壤质地(soil texture)
土壤的粒组(soil separates)
土壤反馈信息 soil feedback information
土壤酶活性 soil enzyme activity
土壤酸度(soil acidity)
土壤侵蚀类型 soil erosion type
土壤立体网络 soil stereonet
土壤结构(soil structure)
土壤蔗糖酶 soil saccharase
土壤环流术 soil perfusion technique
土壤酶学 soil enzymology
土壤剖面(soil profile)
土壤生态系统 soil ecosystem
土壤生物活性 soil biological activity
钙成土壤(calcimorphic soils)
土壤酶 soil enzyme
土壤干旱(soil drought)
盐成土壤(halomorphic soils)
土壤多糖 soil polysaccharide
土壤动物孔道
土壤原酶 native soil enzyme
What does the passage say about animals' communication?
听力原文:Soil conservation efforts protect soil from wind and water that can blow or wash it away. Good soil produces food crops for both people and animals.