Study of Soil Organic Matter in Yaodu Agricultural Area of Linfen and a Large Amount of Nutrient Elements of Spatial Variation

[Objective]The spatial variation of soil organic matter and nutrients in Linfen suburban agricultural zone was revealed to provide guidance for the evaluation of soil fertility and management.[Method]Using a great deal of analysis data of soil nutrient content,soil organic matter,total nitrogen,hydrolyzable nitrogen,available phosphorus,available potassium and slow-available potassium were observed.Geostatistics method was used to calculate and analyze.[Result]Among the soil fertility index soil in Yaodu District,organic matter,total nitrogen and hydrolysable nitrogen nugget value and base value was 0.931,0.839,0.866 respectively,which showed that it had a weak spatial correlation.C0/(C + C0) values of available phosphorus,available potassium and slow-available potassium were 0.663,0.666,0.729,which showed moderate spatial correlation degree.Nutrients distribution of soil organic matter,total nitrogen and hydrolysis nitrogen content decreased gradually from the west to the east.Distribution performance of available phosphorus and available potassium showed the center high and around low.Effective phosphorus center was broken apart,and available potassium was diffused to fen department of Henan as the center.[Conclusion]Farmers should fully consider the difference between the bottom soil in the application process,to avoid the average fertilization blindly.