Study on Spatial-Temporal Variability of Available Iron and Manganese in Soil during Tobacco Growth Season
He Xiaobing
Wang Xiaoqiang
Ge Shaohua
Li Pengyan
Chang Dong
Abstract：Using the method of geo-statistics combined with geographic information system (GIS),the maps of spatial distribution and temporal stability were drawn with Kriging interpolation and raster calculation,and the spatial-temporal variation of available iron and manganese contents in soil during tobacco growth season was researched.The results showed that the soil available iron and manganese conents in research regions had strongly spatial correlation in July and October,and their nugget coefficients were lower than 25 ％.In April,the nugget coefficient of available iron and manganese were 50.00％ and 36.10％ respectively,and showed moderate spatial correlation.The analysis results of temporal stability indicated that available iron had higher temporal stability,while that of available manganese was weaker for more widely area of unstable region with the time frame variation coefficient more than 25 ％.Soil available iron and manganese in research regions had variation in different degrees in spatial distribution and time scale.During the tobacco production,we should pay attention to micronutrient fertilizer application according to the changing rules of soil available iron and manganese.
Keywords：Tobacco fieldAvailable ironAvailable manganeseSpatial-temporal variationKriging interpolation
Publication Date：2018-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 101-106 )