• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>ACIAR Proceedings no.116; CARDI International Conference on Research on Water in Agricultural Production in Asia for the 21st Century; 20031125-28; Phnom Penh(KH) >The economics of rice double-cropping with supplementary irrigation in the rainfed lowlands of Cambodia: a survey in two provinces
【24h】

The economics of rice double-cropping with supplementary irrigation in the rainfed lowlands of Cambodia: a survey in two provinces

机译：柬埔寨雨养低地稻米双季配合灌溉的经济效益：两个省的调查

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

The use of small-scale, supplementary irrigation is seen as a potential method to overcome a severe constraint in rainfed lowland rice production, permitting a move from single- to double-cropping and thus improving food security and farm incomes. In Cambodia, a single rice crop grown on infertile soils under unfavourable climatic conditions is the most common practice. With poor yields and low levels of land use, farmers regularly experience food shortage and poverty. Based on supplementary irrigation from privately owned tube-wells or on-farm reservoirs, farmers in some areas have been able to grow an additional, short-term rice crop at the start of the wet season using modern varieties. In this study, the effect of double-cropping on farm incomes and on the use of farm resources were assessed, and farm-level constraints to the adoption of double-cropping identified. A survey was conducted in two locations in southern Cambodia, one in Takeo Province where conditions were favourable for supplementary irrigation, and one in Kampot Province where conditions were less favourable. Data about production practices and the costs and returns of single-cropping and double-cropping were collected by interviewing 115 randomly selected farmers. It was found that moving to double-cropping could increase food supply by 75% in Takeo and 22% in Kampot, and farm family income by 37% in Takeo and 25% in Kampot over a full farm-year. This was achieved mainly by using farm resources better, with land use of 150% in Takeo and 122% in Kampot. Using wells and pumps for supplementary irrigation improved returns in Takeo, whereas farmers in Kampot were limited by their reliance on surface storage. Thus, a lack of tube-wells and pumps to access groundwater is the key obstacle to expansion of the double-cropping area, both within and between regions.
机译：小规模补充灌溉的使用被认为是克服雨养低地稻米生产中严重制约因素的一种潜在方法，它允许从单作转为双作，从而改善了粮食安全和农业收入。在柬埔寨，最常见的做法是在不利的气候条件下在不肥沃的土壤上种植一种水稻。由于单产低下，土地使用水平低，农民经常遇到粮食短缺和贫困。基于私有管井或农场水库的补充灌溉，某些地区的农民能够在雨季开始时使用现代品种种植额外的短期水稻作物。在这项研究中，评估了双季作物对农场收入和对农场资源利用的影响，并确定了采用双季作物的农场水平限制。在柬埔寨南部的两个地点进行了一项调查，一个地点在武生省，那里的条件有利于补充灌溉，另一个地点在贡布省，那里的条件不太有利。通过采访115位随机选择的农民，收集了有关生产实践以及单作和双作成本和回报的数据。研究发现，在整个农业年度中，改种双季作物可使武雄的粮食供应增加75％，贡布的粮食供应增加22％，武雄的农业家庭收入增加37％，贡布的农业家庭收入增加25％。这主要是通过更好地利用农场资源来实现的，武雄市的土地利用率为150％，贡布市的土地利用率为122％。使用井和水泵进行补充灌溉可提高武雄市的收益，而贡布的农民由于对地表存储的依赖而受到限制。因此，缺乏管井和泵来获取地下水是在区域内和区域之间扩大双作面积的主要障碍。

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