Economic Growth and the Intensification of Agriculture in sub-Saharan Africa

撒哈拉以南非洲的经济增长和农业集约化

• 批准号: 22580240
• 负责人: SAKURAI Takeshi
• 金额: $ 2.41万
• 依托单位: Hitotsubashi University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010-10-20 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22580240/
• 关键词: 国際農業; サブサハラ・アフリカ; 農業生産性; ガーナ; 稲作; メイズ; 家計調査; パネルデータ

This research investigates the impact of Ghana's recent economic growth on agricultural technologies in several villages around Kumasi, an inland big city. Total population of the study villages did not change much during the last 10 year period, but the share of adults whose main income source is agriculture reduced significantly. While the number of rice producers is the same, the share of migrants has decreased. The comparison of profitability of rice and maize reveals that rice has become more profitable than maize now, reversing the position during the last 10 year period. Area planted to rice did not change, but fallow has disappeared and continuous land use has become common. In addition, the use of improved varieties, chemical fertilizer, herbicide, and bird net has widely adopted in rice production, indicating that labor-saving intensification is taking place. This technological change is considered to be induced by increasing demand for food due to the recent economic growth.

本研究调查了加纳最近的经济增长对内陆大城市库马西周围几个村庄农业技术的影响。研究村的总人口在过去10年期间没有太大变化，但以农业为主要收入来源的成年人所占比例显著减少。虽然稻米生产者的数量相同，但移民的比例有所下降。水稻和玉米的盈利能力比较表明，水稻现在比玉米更有利可图，扭转了过去10年期间的情况。种植水稻的面积没有变化，但休耕已经消失，土地连续利用已经成为普遍现象。此外，改良品种、化肥、除草剂和渔网的使用在水稻生产中得到广泛采用，表明劳动节约型集约化正在发生。这种技术变革被认为是由于最近的经济增长导致对粮食的需求增加而引起的。

项目成果

サブサハラ・アフリカにおけるコメ増産の課題

撒哈拉以南非洲地区增加水稻产量的挑战

• 发表时间: 2013
• 期刊: 都市と農村をむすぶ誌
• 作者: Lin ZHOU;Ryuichi SHIGENO;Hisato SHUTO;茂野隆一;Ryuichi Shigeno;Ryuichi Shigeno;櫻井武司
• 通讯作者: 櫻井武司

Intensification of Lowland Cropping Systems and Informal Land Ownership in West Africa : Comparison of Two Large Inland Markets in Côte d'Ivoire and Ghana

西非低地耕作制度和非正式土地所有权的集约化：科特迪瓦和加纳两个大型内陆市场的比较

• 发表时间: 2013
• 作者: SAKURAI;Takeshi
• 通讯作者: Takeshi

How Do New Cash Crops Spread or Not Spread?: The Case of Rice in a Suburban Area, Ghana

新经济作物如何传播或不传播？：以加纳郊区的水稻为例

• 发表时间: 2012
• 作者: TACHIBANA;Towa and SAKURAI;Takeshi;Towa Tachibana and Takeshi Sakurai
• 通讯作者: Towa Tachibana and Takeshi Sakurai

Impact of Adoption of a New Cash Crop : A Randomized Rice Seed Provision Trial in Kenyan Highlands

采用新经济作物的影响：肯尼亚高地的随机水稻种子供应试验

• 发表时间: 2013
• 作者: SAKURAI;Takesh、NASUDA;Akiko、MURAGE;Hunja、and MAKIHARA;Daigo
• 通讯作者: Daigo

How Do New Cash Crops Spread or Not Spread? The Case of Rice in a Suburban Area, Ghana

新经济作物如何传播或不传播？

• 发表时间: 2013
• 作者: TACHIBANA;Towa and SAKURAI;Takeshi
• 通讯作者: Takeshi