Soil Geochemical Characteristics And Suitability Evaluation Of Dingtao Yam Planting Area In Shandong Province

Chinese yam,as a kind of medicinal material,has high development prospects.Generally,it grows in loose and fertile sandy soil with good drainage,and needs plenty of water and perennial irrigation,so it has high requirements for soil quality.At present,Dingtao,Heze,Shandong Province,will be used as a yam planting area.It is necessary to analyze the real nutrient status and fertilizer supply capacity of the area,conduct characteristic agro-geological survey,analyze soil geochemical characteristics,and provide basis for the planning of yam planting area.In this paper,through the investigation of agrogeological background in Dingtao Yam planting area,the agrogeological background conditions in the area were found out,and the geochemical characteristics of soil elements,the regularity of element migration and transformation and the division of regional geochemical grades were carried out.The effects of soil and water environment geochemistry on yam quality were analyzed,and the planting suitability was evaluated.Planning and economic analysis of yam planting land.The main achievements of this paper are as follows:1.The geological environment conditions of the working area were investigated,and the topograpHy,stratigrapHic lithology,soil type and hydrogeological conditions were found out.The geological background conditions,growth habits and planting conditions of yam planting area were investigated and studied.2.In the study area,the total elements of shallow soil and deep soil,soil nutrients,plant samples,groundwater and irrigation water were sampled,and the contents of each index were analyzed.Through the comparison of coefficient of variation,significance analysis and correlation analysis,the soil geochemical characteristics in the region were obtained.3.By normalizing the elements adopted,and then calculating the average value of the same elements at the same depth,the transfer of elements in yam was analyzed.The correlation analysis and difference significance analysis of various elements in shallow soil were carried out,and the mutual influence analysis of soil elements was obtained.4.Finally,by revealing the influence of elemental factors and soil environment on the quality of yam planting,the main element Sr is used to analyze the growth environment of yam,establish the ecological geochemical model of yam growth,and propose land planning suggestions based on this analysis.