Effects of Straw Returning to Field Combined with Bacterial Application on Soil Physicochemical Properties and Enzyme Activities Freeze-thaw Cycling
Due to the influence of high intensity reclamation in northeast China for many years and natural factors,soil nutrients are constantly lost and the quality continues to decline,which seriously affects the sustainable development of agriculture in China.Crop straw is rich in nutrients,which plays an important role in soil remediation and the formation of soil organic carbon.In addition,straw returning to the field can also further stimulate the activity of soil microorganisms,especially the secretion of soil enzymes.The significance of straw returning in improving soil structure and improving soil organic carbon content makes it a current research hotspot.However under the influence of low temperature and thawing,crop straw rot rate is slow,low temperature bacterial agent as biological treatment compared with conventional physical and chemical methods with low cost,high efficiency,simple operation,no characteristics of secondary pollution,with scientific and effective theory and method to guide the straw with bacteria agent returning technology,to ensure food security,implement the strategy of"grain in technology",realize sanjiang plain agricultural modernization and sustainable development is of great significance.In-depth analysis of the above problems,to provide scientific reference for crop straw scientific returning to the field.
returning straw to the fieldorganic carbonsoil physical and chemical propertiessoil enzyme activitylow temperature bacteria
万方数据
维普
