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- W2365660403 abstract "【Objective】The aim of the research is to study the spatial distribution of available soil phosphorus in the hilly citrus orchards.【Method】The spatial distribution of available phosphorus content(APC) in soil was investigated using ArcGIS Geostatisties software based on geographical statistics.The small scale samples used in this study were collected from citrus mountain orchards in Fengjie County,Chongqing,China.【Result】The results of traditional statistical analysis showed that the data appeared in normal distribution after they were processed by domain method and logarithmic transformation,with an average of 20.13 mg/kg and a variation coefficient of 123.05% that was a high degree of variation.The results from geographical statistics also indicated that the spatial variability of APC was obviously characterized by a second-order trend as well as anisotropy.Its optimal semi-variance function fitted an exponential model with moderate spatial correlation [C0 /(C0 +C)=36.55%],which resulted from structural and the stochastic factors.The results via ordinary Kriging interpolation showed that the APC in the east and west was higher than that in the north and south.According to the grading standards of soil nutrients,the areas in this study were classified into four types based on the APC data after the interpolation,i.e.significantly deficient,generally deficient,moderate and excessive with the percentage of 30.91%,27.27 %,36.36% and 5.45%,respectively.【Conclusion】Based on the data in this study,overall the soil phosphorus nutrition in this area is relatively poor.This study will provide a basis for rational and efficient phosphorus management in citrus orchards." @default.
- W2365660403 created "2016-06-24" @default.
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- W2365660403 date "2014-01-01" @default.
- W2365660403 modified "2023-09-23" @default.
- W2365660403 title "Spatial distribution of available soil phosphorus in the hilly citrus orchards based on small scale samples" @default.
- W2365660403 hasPublicationYear "2014" @default.
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