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- W2357807597 abstract "The variation of trace elements caused by different fertilization in paddy soils in Hunan province were studied for the first time. Trace elements were measured based on long-term sited fertilization experiments with four treatments including CK, NPK, OM30, and OM60, which have been conducted for twenty years on purple tidal clayey earth, reddish yellow clayey earth, blue gray clayey earth, alluvial sandy earth, yellow clayey earth, and whitish clayey earth. The result shows: long-term sited fertilization altered the contents of trace elements nutrition in different paddy soils; the change trends and mechanisms for trace elements differ from various paddy soils and fertilizations. Compared with CK, the contents of available B, available Cu, and available Zn in the paddy soils under fertilization treatments are either increased either through freeing the trace elements fixed in soil by increasing organic matter or inputting B, Cu, and Zn with long term fertilization,or decreased because of the plants with larger biomass taking in more available B, Cu, and Zn under NPK treatment for long term;the contents of available Fe and Mn went up due to the declining of Eh and pH in paddy soils and the inputting of Fe and Mn from organic manure fertilization, while it declined due to the rising of pH and the intensifying of organic matter’s adsorption." @default.
- W2357807597 created "2016-06-24" @default.
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- W2357807597 date "2008-01-01" @default.
- W2357807597 modified "2023-09-23" @default.
- W2357807597 title "Effect of long-term fertilization on levels of nutrition of available trace elements in paddy soils in Hunan province" @default.
- W2357807597 hasPublicationYear "2008" @default.
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