Comparison of Carbon and Nitrogen Mineralization between Fumigation and Heating Treatments

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概要

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• We carried out an experiment to compare the amounts of carbon and nitrogen mineralized by chloroform fumigation and heating (50, 100, 150, and 200℃) in order to clarify the origin of the carbon and nitrogen mineralized by the drying treatment, for the development of a soil fertility index. The amount of carbon mineralized from the fumigated soil was approximately equal to that from the soil heated at 50℃. The amount of nitrogen mineralized from the fumigated soil equal to that from the soil heated at 50 and 100℃. The decrease in the number of bacteria in the fumigated soil was approximately equal to that in the soil heated at 50℃. On the other hand, the decrease in the number of actinomycetes and fungi in the fumigated soil was equal to that in the soil heated at 100℃. Based on these results, we suggest that the carbon and nitrogen mineralized in the soil heated at 50 and 100℃ were mainly derived from the biomass fraction and at above 100℃, mainly from the fraction.

• 社団法人日本土壌肥料学会の論文

著者

• Sakamoto Kazunori

  Faculty Of Horticulture Chiba University

• Yoshida Tomio

  Faculty of Horticulture, Chiba University

• Yoshida Tomio

  Faculty Of Horticulture Chiba University

• Satoh Masaki

  Faculty Of Horticulture University Of Chiba

• Sakamoto Kazunori

  Faculty Of Horticulture University Of Chiba

• Yoshida Tomio

  Faculty Of Horticulture University Of Chiba

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