Air-drying treatment and mineralization of biomass nitrogen in paddy soils

Journal of the science of soil and manure, Japan Volume 68 Issue 4 Page 376-380

published_at 1997-08-05

2007020017.pdf

[fulltext] 1.95 MB

Title

水田土壌の風乾処理とバイオマス窒素の無機化

Air-drying treatment and mineralization of biomass nitrogen in paddy soils

Creators Marumoto Takuya

Creators Andoh Hoh

Creators Wada Gensichi

Creator Keywords

風乾乾土効果微生物バイオマスクロロホルム燻蒸-抽出法(FE法) air-drying chloroform fumigation-extraction method drying effect microbial biomass

The relationship between the nitrogen mineralized after the air-drying treatment of paddy soils and microbial biomass nitrogen was investigated. The amount of nitrogen mineralized after air-drying and water-logging treatment increased throughout the air-drying period and reached the maximum level of two weeks of incubation. The amount of microbial biomass decreased during air-drying. The relationship between the nitrogen mineralized after two weeks of incubation following air-drying treatment and the biomass nitrogen in paddy soils was significantly high. The contribution of biomass nitrogen to total mineralized nitrogen was about 20-48% in paddy soils and lower than that in upland soils (45-50%).

Subjects

農学 ( Other)

Languages jpn

Resource Type journal article

Publishers 日本土壌肥料学会

Date Issued 1997-08-05

File Version Version of Record

Access Rights open access

Relations

[ISSN]0029-0610

[NCID]AN00195767

[isVersionOf] [NAID]http://ci.nii.ac.jp/naid/110001747363/

Schools 農学部