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有畜複合農業における物質循環システム開発のための窒素フローの解析 : 十勝地方の畜産・畑作を事例として
https://doi.org/10.24514/00001313
https://doi.org/10.24514/000013133cfd2e2d-f8bc-4234-8039-77f1d26e62a1
| 名前 / ファイル | ライセンス | アクション |
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harc_report_No177p133-149p.pdf (121.5 kB)
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| Item type | 紀要論文01 / Departmental Bulletin Original Article(1) | |||||||||||||||||
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| 公開日 | 2019-03-22 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | 有畜複合農業における物質循環システム開発のための窒素フローの解析 : 十勝地方の畜産・畑作を事例として | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Improvement about Nitrogen flow of Upland and Livestock Farming on Tokachi-region in Hokkaido | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | jpn | |||||||||||||||||
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| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||||||||
| ID登録 | ||||||||||||||||||
| ID登録 | 10.24514/00001313 | |||||||||||||||||
| ID登録タイプ | JaLC | |||||||||||||||||
| 著者 |
竹中, 洋一
× 竹中, 洋一
× 秦, 隆夫
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | Large-scale upland cropping farms exist side-by-side with dairy farms in the Hokkaido Tokachi-region of Japan. There are problems about livestock waste management, and fertility needs to be raised. Organic combinations of upland field farming and livestock farming shouled be reconstructed, in order to solve these problems. Otofuke Town, which is the object of this study, is located in the center of the region. We developed nitrogen flow models for the whole town, for specific areas of the town, and for a standard farm. Based on these models, nitrogen flows were estimated in order to point out problems on the substance circulation. For nitrogen flow of the whole town, accumulation and leaching in farmland (A&L) was 64㎏ N ha^-1year^-1, and waste to the hydrosphere and to the ground outside of farmland (W-h&g) was 18㎏ N ha^-1year^-1. A&L was not a serious quantity for environ-mental conservation. In the standard dairy farm model (SDM), nitrogen input to farmland was 203㎏ N ha^-1 year^-1, A&L was 16㎏ N ha^-1year^-1 and W-h&g was 47㎏ N ha^-1year^-1. The input of livestock waste to farmland was large, and the accumu-lation and output of nitrogen from farmland were very large. While, in the combination model of one dairy farm and two upland farms, compared with the SDM, nitrogen input to farmland was reduced to 61% , A&L was reduced to 42% and W-h&g was reduced to 34%. When the SDM expands self-supplying forage by 1.7 times and alfalfa is introduced as a legume into a quarter of the expanded field, the amount of chemical fertilizer was reduced by 23% , and A&L was reduced to 46%. A&L was reduced by more than the livestock density reduction rate caused by the expansion of forage cropping. The introduction of a legume is an effective way to improve nitrogen circulation. In the simulation in which the number of heads in the SDM was doubled without increasing the self-supplying forage cropping area, not only did W-h&g become 101㎏ N ha^-1year^-1, but A&L became huge : 282㎏ N ha^-1year^-1. If livestock waste management is improved and 75% of the compost is shipped out in this simulation, the nitrogen flow will be improved sharply : A&L=13㎏ N ha^-1year^-1 and W-h&g=117㎏ N ha^-1year^-1. In the S area of Otofuke Town, dairy represents half of the agricultural production of agricultural production. The nitrogen flow of the S area was computed from the survey data of all the farms in the area. W-h&g was 44㎏ N ha^-1year^-1, and A&L was 89㎏ N ha^-1year^-1. Compared with the whole town, W-h&g of the S area was 2.5 times, although half of the compost was shipped out of the S area. Then, we simulated the effect of introduction technologies (livestock waste management system, triticale cropping using a slurry and straw ammonia treatment system) to the S area. In this simulation, W-h&g was reduced sharply to 10㎏ Nha^-1year^-1, and A&L became 61 ㎏ N ha^-1year^-1 to a quantity that would cause few problems. A large part of these reductions is attributed to the improvement of livestock waste management. It was reconfirmed that proper management and proper use of livestock waste are important for environmental conservation. | |||||||||||||||||
| 書誌情報 |
北海道農業研究センター研究報告 en : Research BUlletin of the NARO Hokkaido Agricultural Research Center 巻 177, p. 133-149, 発行日 2003-12-01 |
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| 出版者 | ||||||||||||||||||
| 出版者 | 独立行政法人 農業技術研究機構 北海道農業研究センター | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||
| 収録物識別子 | 1347-8117 | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||||||||
| 識別子タイプ | DOI | |||||||||||||||||
| 関連識別子 | 10.24514/00001313 | |||||||||||||||||
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| 出版タイプ | VoR | |||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||
