収入の季節性と農家の栽培技術の選択行動： インドネシアの事例分析

收入季节性与农户种植技术选择行为：以印度尼西亚为例

• 批准号: 18K01577
• 负责人: 中村 和敏
• 金额: $ 2.58万
• 依托单位: Kyushu Sangyo University (2020-2022)University of Nagasaki (2018-2019)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-18K01577/
• 关键词: アブラヤシ; インドネシア; パーム油; リスク回避度; 実験経済学

令和4年度は、農家による栽培技術の選択行動を明らかにするため、ジャワ島のプランテーションを事例にした研究を行った。具体的には、ジャワ島でプランテーション栽培をおこなっている国営農園企業を事例として、従来からの栽培作物である茶やゴムをアブラヤシへと転換させていくというアブラヤシの「代替的拡大」の過程とその背後で生じているメカニズムを明らかにした。分析対象期間は2010年から2020年までで、公開されている財務データを用いながら、アブラヤシ・ゴム・茶の収益構造について多様な観点から考察を行った。分析結果によれば、ゴムと茶の収益性の低さがアブラヤシ栽培への転換を促しているが、それぞれの収益性の低さの原因は異なっている。ゴムの収益性が低い要因は、ゴム価格が趨勢的に低下傾向にあるためであるが、茶の収益性が低い要因は、農園の栽培部門と工場の加工部門の双方における生産体制が非効率なためと考えられる。栽培作物別や部門別で利用できるデータは限られているため、茶の栽培・加工における非効率性が具体的にどのような要因によって生じているのかを明確にすることは困難であるが、いくつかの事実から判断すると、過剰設備等が経営を圧迫する要因になっていると推察される。こうした分析結果は、小規模農園を営んでいる農家の行動を理解するうえで、重要な意義を持つと考えられ、現在は、これまでに申請者自身がフィールド調査で収集したデータとの比較をしながら分析を進めている。

In 2004, farmers and farmers were selected to conduct a study on the case study of the cultivation techniques of farmers and farmers in 2004. The case study of the state-owned agricultural enterprises in the state-owned agricultural enterprises, and in the case study of the agricultural enterprises of the state-owned agricultural enterprises, and in the case of the agricultural enterprises of the state-owned agricultural enterprises, in the case of the state-owned agricultural enterprises, and in the case of the agricultural enterprises of the state-owned agricultural enterprises, in the case of the state-owned agricultural enterprises, in the case of the state-owned agricultural enterprises, and in the case of the agricultural enterprises of the state-owned agricultural enterprises. In the analysis period, in the year 2010 and 2020, the public and public financial institutions will be able to use food and tea to make a multi-purpose survey. The results of the analysis showed that the causes of low-benefit and low-benefit tea were significantly higher than those of the control group (P < 0.05). Because of the low profit, the low profit of tea, the low benefit of tea, the cultivation department of agriculture, the factory and the processing department of both sides, the rate of health system is very high. The cultivation of crops and other plants were used to limit the production rate of tea plants, and the cultivation and processing of tea plants were used to determine whether they were safe or not. In the cultivation and processing of tea plants, it was necessary to make sure that they were not aware of the situation, and that they were not responsible for the detection of equipment and equipment. The results of this analysis, the understanding of the behavior of farmers in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the understanding of farmers' behavior in small-scale farmers, the

项目成果

Measuring Risk Preferences: Evidence From Rice Farmers in West Java

衡量风险偏好：来自西爪哇稻农的证据

• 发表时间: 2018
• 期刊: Conference Proceedings, The 14th IRSA International Conference, Strengthening Regional and Local Economies
• 作者: Nakamura;Kazutoshi
• 通讯作者: Kazutoshi

プランテーションにおける栽培作物の転換 ―インドネシア・ジャワ島のアブラヤシの事例ー

种植园种植作物的转变 - 以印度尼西亚爪哇油棕为例 -

• 发表时间: 2023
• 期刊: 社会科学
• 作者: H.Iiboshi;Y.Iwata;Y.Kajita;N.Soma;李 宗輝;Adachi T;中村和敏
• 通讯作者: 中村和敏

Yield Gaps among Oil Palm Smallholders in Indonesia: Evidence from Riau Province

印度尼西亚油棕小农之间的产量差距：来自廖内省的证据

• 发表时间: 2019
• 期刊: The 7th IRSA International Institute , Maritime Infrastructure and Regional Development: Collections of Abstracts
• 作者: Nakamura;Kazutoshi
• 通讯作者: Kazutoshi