• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Climate and Development >Impact of adoption of drought-tolerant maize varieties on total maize production in south Eastern Zimbabwe
【24h】

Impact of adoption of drought-tolerant maize varieties on total maize production in south Eastern Zimbabwe

机译：旱涝玉米品种采用对津巴布韦东南部总玉米生产的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Drought is a huge limiting factor in maize production, mainly in the rain-fed agriculture of sub-Saharan Africa. In response to this threat, drought-tolerant (DT) maize varieties have been developed with an aim to ensure maize production under mild drought conditions. We conducted a study to assess the impact of smallholder farmers' adoption of DT maize varieties on total maize production. Data for the study came from a survey of 200 randomly sampled households in two districts of Chiredzi and Chipinge in southeastern Zimbabwe. The study found that 93% of the households were growing improved maize varieties and that 30% of the sampled households were growing DT maize varieties. Total maize yield was 436.5 kg/ha for a household that did not grow DT maize varieties and 680.5 kg/ha for households that grew DT maize varieties. We control for the endogeneity of the DT adoption variable, by using the control function approach to estimate total maize production in a Cobb-Douglas model. The results show that households that grew DT maize varieties had 617 kg/ha more maize than households that did not grow the DT maize varieties. Given that almost all farmers buy their seeds in the market, a change in varieties to DT maize seeds gives an extra income of US$240/ha or more than nine months of food at no additional cost. This has huge implications in curbing food insecurity and simultaneously saving huge amounts of resources at the household and national levels, which are used to buy extra food during the lean season.
机译：干旱是玉米产量的巨大限制因素，主要是在撒哈拉以南非洲的雨红农业。为了应对这种威胁，已经开发出耐旱（DT）玉米品种，其目的是在温和的干旱条件下确保玉米产量。我们进行了一项研究，评估小农农民采用DT玉米品种对总玉米生产的影响。该研究的数据来自津巴布韦东南部的两个地区200个随机采样的家庭调查。该研究发现，93％的家庭正在增长改善玉米品种，其中30％的采样家庭正在增长DT玉米品种。对于没有生长DT玉米品种的家庭，玉米品种的家庭的总玉米产量为436.5千克/公顷。我们通过使用控制功能方法来控制DT采用变量的内部性，以估计COBB-DOGGLAS模型中的总玉米生产。结果表明，长达玉米品种的家庭比没有种植DT玉米品种的家庭更多的玉米。鉴于几乎所有农民在市场上购买种子，DT玉米种子的各种变化，额外收入为240美元/公顷或超过9个月的食物，无需额外费用。这对遏制粮食不安全的巨大影响，同时节省了家庭和国家层面的巨额资源，这些资源用于在精益季节购买额外的食物。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号