DECOMPOSITION OF RICE RESIDUE IN TROPICAL SOILS : II. Immobilization of Soil and Fertilizer Nitrogen by Intact Rice Residue in Soil

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概要

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• The decomposition processes of intact rice residue (leaf blades) in Maahas soil of the Philippines were investigated by incubation experiments at 30℃. The experiments dealt with nitrogen immobilization by rice residue under lowland and upland conditions. Rice residue which is low in nitrogen, absorbed nitrogen from the soil and from the added fertilizer (ammonium sulfate) during its decomposition under both conditions. Under lowland conditions, the amount of nitrogen immobilized was small during the first week but became large after 2 or 3 weeks. Under upland conditions the immobilized nitrogen reached its maximum during the first week but the amount was not so large as under lowland conditions. The added fertilizer stimulated decrease of weight of the rice residue early in the incubation period but retarded it later under both conditions. The absorption of fertilizer by rice residue ceased at the early stage of the residue decomposition, but the nitrogen content of the residue continued to increase.

• 一般社団法人日本土壌肥料学会の論文

著者

• YONEYAMA Tadakatsu

  The International Rice Research Institute (IRRI)

• YOSHIDA Tomio

  The International Rice Research Institute

• Yoneyama Tadakatsu

  The International Rice Research Institute:(present Address)department Of Agricultural Chemistry University Of Tokyo

関連論文

• DIFFERENCE IN NATURAL ABUNDANCE OF ^N IN SEVERAL RICE (Oryza sativa L.) VARIETIES : APPLICATION FOR EVALUATING N_2 FIXATION
• DECOMPOSITION OF RICE RESIDUES IN TROPICAL SOILS : IV. The Effect of Rice Straw on Nitrogen Fixation by Heterotrophic Bacteria in Some Philippine Soils
• NITROGEN TRANSFORMATIONS OF AMMONIUM SULFATE AND ALANINE IN SUBMERGED MAAHAS CLAY
• DECOMPOSITION OF RICE RESIDUE IN TROPICAL SOILS : III. Nitrogen Mineralization and Immobilization of Rice Residue during Its Decomposition in Soil
• EFFECT OF ORGANIC MATTER APPLICATION AND WATER REGIMES ON THE TRANSFORMATION OF FERTILIZER NITROGEN IN A PHILIPPINE SOIL
• DEGRADATION OF 2,4-D, 2,4,5-T, AND PICLORAM IN TWO PHILIPPINE SOILS
• FORMATION AND DEGRADATION OF ETHYLENE IN SUBMERGED RICE SOILS
• DISTRIBUTION, AND UPTAKE BY RICE PLANTS OF ^N-LABELED AMMONIUM APPLIED IN MUDBALLS IN PADDY SOILS
• ATMOSPHERIC NITROGEN FIXATION BY PHOTOSYNTHETIC MICROORGANISMS IN A SUBMERGED PHILIPPINE SOIL
• EFFECT OF ORGANIC MATTER ON THE BIODEGRADATION OF SOME ORGANOCHLORINE INSECTICIDES IN SUBMERGED SOILS
• EFFECT OF ORGANIC ACID TRANSFORMATIONS IN SUBMERGED SOILS ON GROWTH OF THE RICE PLANT
• NITRIFICATION AND DENITRIFICATION IN SUBMERGED MAAHAS CLAY SOIL
• DECOMPOSITION OF RICE RESIDUE IN TROPICAL SOILS : I. Nitrogen Uptake by Rice Plants from Straw Incorporated, Fertilizer (Ammonium Sulfate) and Soil
• DECOMPOSITION OF RICE RESIDUE IN TROPICAL SOILS : II. Immobilization of Soil and Fertilizer Nitrogen by Intact Rice Residue in Soil

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