Effects of Curtailment of Nitrogen Fertilizer on Biological Properties and Tea Leaf Yield in Acid Tea Field Soils
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概要
- 論文の詳細を見る
In Japan, the soils in tea fields are further acidified by heavy application of nitrogen fertilizer. In the long-term fertilizer application fields, available P, total carbon and nitrogen contents had the highest in the Multi-F plot, followed by the 98-D.F plot and the smallest in the 95-D.F plot. Soil enzymes activity had the highest the Multi-F plot. It was estimated that all of the enzyme activity were often corresponded with the results of the organic matter and the available P contents. The number of fungi under acidic condition had the close relation since change of these enzymes activity. It was evident that fungi were participated in carbon, nitrogen and phosphorus metabolism in acid tea field soils. It became clear that the number of fungi and enzymes activity decreased corresponding well with the available P and the organic matter contents depend on fertilization management. Moreover in case of qualities of green tea, generally difference between experimental plots and Multi-F plot were to be small. It was indicated that influence to the yields by curtailment of the amount of nitrogen fertilization was small.
- 社団法人日本土壌肥料学会の論文
著者
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Kanazawa Shinjiro
Laboratory of Soil Microbiology,Division of Soil Science and Plant Production,Department of Plant Re
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AN Gi-Hong
Graduate School of Agriculture, Hokkaido University
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Kanazawa Shinjiro
Laboratory Of Soil Microbiology Division Of Bioresource And Bioenvironmental Science Graduate School
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Kanazawa Shinjiro
Laboratory Of Soil Microbiology Department Of Plant Resources Faculty Of Agriculture Kyushu Universi
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An Gi-hong
Graduate School Of Agriculture Hokkaido University
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Kaizu Toshiyuki
The Kagoshima Tea Experiment Station
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An Gi-Hong
Laboratory of Soil Microbiology, Division of Bioresource and Bioenvironmental Science, Graduate Scho
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