Research On Change Of Cultivated Land Fertility Level And Its Cause In Shouxian County

This paper takes Shou County as the research area,collects and collates many years of sampling data and results of soil testing and formula fertilization.The soil monitoring and updating data in the past five years and the original farmland fertility evaluation system in Shou County have been updated and evaluated using ArcGIS software.Through the comparative analysis of the original soil evaluation of Suixian county and the updated soil evaluation results,the change of farmland fertility in the study area was obtained,and the reasons for the change of farmland fertility were analyzed,and relevant suggestions and countermeasures were put forward.The main research conclusions of this paper are:The soil fertility level in Shou County is between 1-6 years.In 2009,the area ofcultivated land in Shou County is the largest,and the area of Grade 1 is the smallest;in 2016,the area of cultivated land in Shou County is the largest,and that of Area 6 is the smallest;2009-2016 The overall level of farmland fertility in Shouxian County has increased.Newly-added cultivated land has reduced the area of cultivated land,and the total area of cultivated land has decreased.The area of cultivated land such as Grade 1 and Grade 2 has increased by a large area,and the area of Grade6 and other places has dropped significantly.Analyze the change of cultivated land fertility grades from different aspects.The graded outliers are mainly analyzed from the internal and external industry operation errors.Analyze the cultivated lands within the normal range and select the factors that are suitable for Shouxian from the common driving factors to obtain the irrigation capacity.Changes in the capacity of sewerage and sewerage have a great influence on the changes in arable land fertility levels.In response to changes in the soil grade of farmland in Shou County,problems and suggested countermeasures were proposed from different aspects;relevant suggestions were proposed for protecting and improving farmland fertility and strengthening scientific management.