The experimental Chinese hickory forest land was located in Baijiang Town, Tonglu County, Hangzhou City, Zhejiang Province (29º49'20.40''N, 119º14'50.85''E). The applied nitrogen fertilizer is urea and Aluminum is aluminum sulfate reagent (Al2(SO4)3•18H2O (AR), (Sinopharm Chemical Reagent Co., Ltd). The soil of experimental area belongs to red soil, and the tree age is 15 years old. The basic chemical properties of the soil in the pecan forest land of the test site are as follows:pH 5.28, alkaline hydrolyzable nitrogen 155.46 mg/kg, available phosphorus 27.44 mg/kg, available potassium 66.92 mg/kg, organic matter 10.50 g/kg.
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Nitrogen Fertilization in Chinese Hickory Forest
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Corresponding Organization :
Other organizations : Zhejiang A & F University, Zhejiang Academy of Forestry
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Variable analysis
independent variables
- Applied nitrogen fertilizer (urea)
- Aluminum (aluminum sulfate reagent, Al2(SO4)3•18H2O (AR))
- Not explicitly mentioned
- Location of the experimental Chinese hickory forest land (Baijiang Town, Tonglu County, Hangzhou City, Zhejiang Province)
- Soil type (red soil)
- Tree age (15 years old)
- Soil chemical properties (pH 5.28, alkaline hydrolyzable nitrogen 155.46 mg/kg, available phosphorus 27.44 mg/kg, available potassium 66.92 mg/kg, organic matter 10.50 g/kg)
- No positive or negative controls were explicitly mentioned in the provided information.
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