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- W2375455720 abstract "Soil nutrient status is an important indicator of soil fertility to determine the crop yield.The investigation and analysis provides the basic information for future comprehensive evaluation of soil nutrients and fertilizer management resources.In this paper,a meta-analysis is used to analyze the data from 43 publications in the period from 1999 to 2005,to review the literatures for organic matter contents(OM),total N(TN),available N(AN),available P(AP) and available K(AK),to report the results of the spatial-temporal changes of soil fertility,and to explore the reasons for the changes.The results show that the soil OM is increasing,soil fertility is in continual enhancement, and the north area of the Junggar Basin has the highest content of soil OM(31.67 g/kg),while the south area of Tarim Basin has the lowest one(9.15 g/kg).AN is increasing,and Ili Prefecture has the highest content of AN(67.37 mg/kg).AP is increasing rapidly,and Ili Prefecture has the highest content of AP,while the east area of Xinjiang has the lowest one(11.84 mg/kg).TN shows a slight downward trend,and Ili Prefecture has the highest content of TN(1.63 g/kg),while the south area of the Tarim Basin has the lowest one(0.47 g/kg).AK decreases significantly,and Ili Prefecture has the highest content of AK(283.95 mg/kg),while the east area of Xinjiang has the lowest one(104.37 mg/kg).In short,there are regional differences in soil nutrients of Xinjiang;the cropland soil nutrients are high in Ili Prefecture and the north area of the Junggar Basin,and low in the Tarim basin.The seven major cropland soil types distributed in Xinjiang show similar trends.The improvement of soil fertility is mainly contributed to the more application of fertilizers,and the content of OM is affected by the changes of tillage and land use,which also altered the spatial distribution of soil nutrition to different degrees over the past 20 years." @default.
- W2375455720 created "2016-06-24" @default.
- W2375455720 creator A5055985442 @default.
- W2375455720 date "2008-01-01" @default.
- W2375455720 modified "2023-09-23" @default.
- W2375455720 title "Spatial-temporal change of soil nutrients of cultivated land in Xinjiang" @default.
- W2375455720 hasPublicationYear "2008" @default.
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