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Keyword [yearly productivity]
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1.
Effects Of Tillage And Cultivation On Cropland Eco-environment And Yearly Productivity In A Wheat-rice Double Cropping System
2.
Effect Of Straw Returning On Soil Fertility And Yearly Productivity In The Field Scale In Guanzhong Plain
3.
The Study Of Straw And Biochar Returning On Soil Quilaty And Soil Carbon Content In Guanzhong Plain
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