| The soil body isn't homogeneous because temporary and spacitale variety,in spite of prognosticate on the big dimensions or on the small dimensions,the spatial heterogeneity of soil character all exist.To understand sufficiently the spatial distribution of soil nutrient is the basis for managing soil nutrition and fertilizing scientifically.Geographic Information System(GIS),Globe Position System(GPS)and Geostatistics provide new means for studying Soil Science.At present,the technologies has become the most effective means of study the Soil nutrients heterogeneity.In this paper,by investigating a vineyard soil fertility of located in shacheng,vineyard soil variability and wine grape suitability was studied with Geo statistics,GIS,and statistics methods.A scientific basis and decision-making reference were presented for the land management and planning,sustainable land use of the region,and scientific guidance was provided for soil water and fertilization.The main result are as follows:(1)The EC,available P,nitrate nitrogen,available boron,ferrum,copper and magnesium on soil of layer A have strong spatial correlation;pH,organic matter and available K had medium spatial correlation;available soil sulfur,available zinc and manganese have weak spatial correlation and have stable variablility on research scales.(2)The Available K,sulfur,available zinc and manganese on layer of B soil had medium spatial variability;besides,other nutrients showed a strong spatial correlation,the spatial heterogeneities were mainly produced by structural factors.(3)The soil pH and EC on soil of layer A showed well spatial distribution of soil properties,the pH showed low in northwest and high in southeast,soil EC decreasing from the south to the north;The Nitrate nitrogen distribution was more even;the variation pattern of available K was decreasing from southwest to the northeast;the available P showed speckles and spatial variation is very complicated;there have 6 levels fit together in ways;the soil organic matter as a whole in east was higher than west,and decreasing from east to south and northwest;available zinc spatial distribution is not obvious,overall distribution is uniform and concentrations are low;the rest of the trace elements include available boron,ferrum and copper is all showed speckles distribution and spatial distribution is complicated,high area and low area distribution is nested with each other.(4)In the soil layer of B,the pH be subdivided into 6 distinct classifications,we can see clearly the subtle changes of pH,but they all belong to alkaline;the highest area of available K were mainly distributed in western margin to east and belt of middle,the lowest content area were distributed in northeast of researched area;the nitrate nitrogen distribution showed speckles and fit together in ways,the high content area and low content area were distributed by circular patches in middle zone of researched area;the spatial distribution of available P and nitrate nitrogen are very similar,spatial variation of the results is comparatively complex,showed 6 levels fit together in ways;soil available boron showed massive distribution and inclusions,mainly distribution as a whole and decreasing from northeast and southwest to middle area;soil available sulfur spatial distribution was obvious,soil available sulfur content is decreasing from east to west;soil available zinc,manganese and magnesium have largely similar spatial variability and spatial distribution,in which,the middle content area of available manganese was distribute in middle and north of research area,middle content area of available magnesium was distributed form middle to northwest area;available ferrum and copper spatial variation is comparatively complex,the overall trend of available ferrum is decreasing from south to north,the overall trend of available copper is decreasing from eastern to northwest.(5)Growing grapes on research area has both favorable and unfavorable aspects.Among them,the favorable advantage of geographical environment and climate is obvious,but the sand soil is more than clay in soil texture and poor soil fertility,the soil nutrient variation feature was significant.The contents of available manganese were middle level in vineyard soil and helpful for sugar accumulation in grapes.The exchangeable calcium and magnesium content is higher,is beneficial to improve the content of total phenolic and tannin.Available nitrogen,phosphorus,potassium and trace elements such as iron,boron,zinc content is low,need to through fertilizer management to improve soil fertility. |
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