一、药肥及生物药肥化肥、农药是现代农业必不可少的农用物资,在满足人们对粮食增长需求的同时,也带来了严重的土壤退化和污染问题。如化肥和化学农药在土壤中具有化学固定作用,超量施用会造成土壤板结、土壤酸性增加等不良后果,同时会造成土壤地表及水污染加重。大量施用化肥、农药还造成很多生物种群 I. Fertilizer and Biological Fertilizer Fertilizer and pesticide are indispensable agricultural materials for modern agriculture. While meeting people’s demand for grain growth, they also bring about serious problems of soil degradation and pollution. Such as chemical fertilizers and chemical pesticides in the soil with chemical fixation, over-application will result in soil compaction, increased soil acidity and other adverse consequences, will also cause the soil surface and water pollution aggravate. Large-scale application of fertilizers, pesticides also caused a lot of biological populations