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Keyword [Qujing tobacco-growing areas]
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1. Region Division And Quantitative Characteristics Of Climate Factors For Qujing Tobacco-growing Areas
2. Status Of Soil-tobacco Calcium Contents And Its Influence On Tobacco Quality In Oujing
3. Status Of Soil Nutrients At Differernt Altitudes And Distribution Of Boron Contents In Soil And Tobacco Leaves In Qujing Tobacco-growing Areas
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