Elucidation of Nitrogen Discharge Mechanism into Farming Soil System : A Step towards the Resource Circulation and Aqua-environmental Conservation in Watershed

阐明农田土壤系统氮排放机制：流域资源循环和水环境保护的一步

• 批准号: 15580296
• 负责人: ISHIKAWA Masaya
• 金额: $ 2.05万
• 依托单位: Yamagata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15580296/
• 关键词: Upland Field; Nitrogen Discharge; Nitrate-Nitrogen; Denitrification; Multi-purpose Paddy Field; Nitrogen Removal

It searched for the strategy which controlled the amount of the exhaust NO_3-N load from one unit of farmland by paying attention as a biological denitrification, and trying the elucidation of the nitrogen outflow mechanism.It investigates in the alluvial fan where the feature is reproduced easily to clarify the presence of the denitrification with underground water under farmland, and the realities of the water quality change of underground water in the land use system from the field to the paddy field is understood. It was clarified that the principal cause of NO_3-N removal with underground water into undersoil layers of the paddy fields in the non-irrigated winter season was a biological denitrification.It paid attention to the generalizing paddy field which had a new farmland structure as a multi-purpose paddy field where it met idea and the requirement when the biological denitrification action during the surroundings year was able to appear by artificially creating the reduction layer, and it experimented on the lysimeter examination. As a result, NO_3-N decrease rate became 92%, NO_3-N removal in underground water was admitted by a high numerical value, and the utility became clear. In which were the principal causes of the decrease, the subordination nourishment microorganism which used the dominator in the soil system and the fortune-telling decomposition organism, it was possible to hold, and the possibility that autotrophic microorganisms which used the sulfur oxidation bacillus and CO_2 greatly took part was suggested. In addition, the cultivation examination which aims at amount to which the thing of the multi manure consolidating type plowing a field is steady is done, and it does continuing the water quality measurement. The stability of the quality and the amount of farm products clearly showed the nitrogen removal as a numerical value under the guaranteed condition.

以生物反硝化作用为重点，试图阐明氮素外流机理，探索控制单位农田NO3-N排泄量的策略；在易再现这一特征的冲积扇中调查，弄清农田地下地下水反硝化作用的存在，了解从农田到稻田的土地利用系统地下水水质变化的现实情况。阐明了旱作冬季稻田地下水脱氮入地下土层的主要原因是生物脱氮作用，关注了具有新农田结构的推广稻田为多用途稻田，通过人工造就还原层来满足环境年内生物脱氮作用能够出现的理想和要求，并进行了蒸渗仪检测试验。结果表明，硝态氮下降率达92%，地下水中硝态氮的去除以较高的数值被接受，实用性明显。其中，土壤系统中占主导地位的从属营养微生物和占卜作用的分解生物是可能的，并提出了大量利用硫氧化芽孢杆菌和二氧化碳的自养微生物参与的可能性。此外，还针对一田多肥堆肥式耕作的稳产量进行了栽培试验，并对水质进行了连续测定。农产品质量和数量的稳定性清楚地表明，在保证条件下，脱氮量是一个数值。

项目成果

土地利用別メッシュタンクモデルを用いた湿原流域降雨流出解析

使用网格水箱模型按土地利用分析湿地流域降雨径流

• 发表时间: 2004
• 期刊: 水文・水資源学会誌 第17巻3号
• 作者: 石岡義則;吉野邦彦;白谷栄作;石川雅也
• 通讯作者: 石川雅也

Some Aspects of the Defective Paddy Fields by Farmland Consolidation Work

农田整理中不良稻田的几个方面

• 发表时间: 2003
• 期刊: 研究の資料と記録、東京大学 大学院農学生命科学研究科 第29集
• 作者: Yoshinori Ishioka;Kunihiko Yoshino;Eisaku Shiratani;Masaya Ishikawa;Masaya Ishikawa;Masaya Ishikawa
• 通讯作者: Masaya Ishikawa

Rainfall-Rinoff Analysis in Wetland Basin by Using Mesh Tank Model for Landuses

利用土地利用网状水池模型进行湿地盆地降雨径流分析

• 发表时间: 2004
• 期刊: J.Japan Soc.Hydrol.& Water Resour. Vol.17, No.3
• 作者: Yoshinori Ishioka;Kunihiko Yoshino;Eisaku Shiratani;Masaya Ishikawa
• 通讯作者: Masaya Ishikawa

Masaya Ishikawa: "Some Aspects of the Defective Paddy Fields by Farmland Consolidation Work"研究の資料と記録、東京大学 大学院農学生命科学研究科. 第29集. 62-65 (2003)

石川雅也：“农田整理工作造成的不良稻田的一些方面”研究资料和记录，东京大学农业与生命科学研究生院第 29 卷 62-65（2003 年）。

Clarification of Adsorption and Movement by Predicting Ammonia Nitrogen Concentrations in Paddy Percolation Water

通过预测稻田渗滤水中氨氮浓度来阐明吸附和运动

• 发表时间: 2003
• 期刊: Paddy and Water Environment Vol.1,No.1
• 作者: Yoshinori Ishioka;Kunihiko Yoshino;Eisaku Shiratani;Masaya Ishikawa;Masaya Ishikawa
• 通讯作者: Masaya Ishikawa