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Title: コンパートメントモデルによる耕畜連携営農集団の窒素循環解析
Other Titles: Analysis on nitrogen cycling of group farming systems by dairy and crop farmers using compartment models for nitrogen flows
Authors: 佐藤, 寿樹1 Browse this author
藤田, 泉2 Browse this author
Authors(alt): Sato, Toshiki1
Fujita, Izumi2
Keywords: 窒素循環
nitrogen cycling
group farming
compartment models
simulation analysis
Issue Date: 2008
Publisher: システム農学会
Journal Title: システム農学
Volume: 24
Issue: 1
Start Page: 1
End Page: 10
Abstract: 本論文では、コンバートメントモデルを使用し、耕畜連携営農集団の窒素循環について解析した。特に、シミュレーションにより耕畜連携システムの窒素循環における作物利用の効果について検討した。この解析から以下の結果が得られた。1.耕畜連携システムの窒素循環と農地単位面積当り牛飼養頭数とに顕著な相関が認められた。2水田面積率、館料作物単収、堆肥化過程における窒素損失率が窒素循環に大きな影響を与えた。3.中国地方の営農集団と都府県酪農の窒素循環比較において、農地単位面積当り牛飼養頭数が小さいにも関わらず、中国地方の営農集団の窒素循環率および窒素効率は低くなった。この結果は、中国地方の営農集団の水田面積率が大きいことと飼料作物単収が小さいことが主な理由と考えられた。
In this paper, nitrogen cycling of group farming systems by dairy and crop farmers was analyzed using compartment models for nitrogen flows in the systems. In particular, the effects of crop utilization on nitrogen cycling in the systems were examined by simulation. The following results were obtained from the analysis. 1. There was a remarkable relationship between the number of cows per field area and nitogen cycling in the systems. 2. Nitrogen cycling was largely influenced by the ratio of paddy rice field to total farming land, feed crop yield and nitrogen losses in process of manure production in the systems. 3. The nitrogen cycling and nitrogen use efficiency of group farming systems in Chugoku region were less than those of farming sytems in over all Japan in spite of the fact that the number of cows per field area was smaller in the former systems. This result may be caused by larger paddy rice field and less crop yield in group farming systems in Chugoku region.
Description: 研究論文
Type: article
Appears in Collections:サステイナビリティ推進機構 (Institute for the Advancement of Sustainability) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 佐藤 寿樹

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