Water Harvesting & Basin tillage (WHB) through demonstrations [南非]
- 创建:
- 更新:
- 编制者: Cobus Botha
- 编辑者: –
- 审查者: Fabian Ottiger
approaches_2336 - 南非
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全部展开 全部收起1. 一般信息
1.2 参与方法评估和文件编制的资源人员和机构的联系方式
1.3 关于使用通过WOCAT记录的数据的条件
编制者和关键资源人员接受有关使用通过WOCAT记录数据的条件。:
是
1.4 SLM技术问卷的参考
Water Harvesting & Basin tillage [南非]
In-field water harvesting technique
- 编制者: Cobus Botha
2. SLM方法的描述
2.1 该方法的简要说明
Optimising rainwater use, reduce runoff by use of basins and reduce evaporation losses by applying a mulch (stone/reeds) on the runoff strip and in the basins.
2.2 该方法的详细说明
该方法的详细说明:
Aims / objectives: Given the marginal soils of a clayey nature and/or slope terrain, coupled with erratic rainfall events, the technology aims to harvest available rain water and prevent runoff and soil loss. At present, PRAs are conducted in target areas and so far, people are eager to adopt the technology. The aim is to train them and assist in constructing the basins so that after a year they will be able to take over the project entirely even though the team will still be around to provide advice should the need arise.
2.3 该方法的照片
2.5 采用该方法的国家/地区/地点
国家:
南非
区域/州/省:
Free State
Map
×2.6 该方法的开始和终止日期
注明开始年份:
1996
终止年份(若不再采用该方法):
2002
2.7 方法的类型
- 基于项目/方案
2.8 该方法的主要目的/目标
The Approach focused on SLM only (n/a)
*To make optimal use of pre-plant water that collects in basins from summer rains that fall during the fallow period. Saved water very beneficial during the reproductive growth of plants which often occurs when there is no rain.
*Prevention of soil and water loss through water erosion and runoff by the use of basins.
*Restriction of evaporation by the use of mulch. Straw is mostly preferred for its biodegradability although stone in comparative percentage cover is more effective.
The SLM Approach addressed the following problems: The target areas are marginal for crop production because of relatively low and erratic rainfall and dominantly clay soils on which the precipitation use efficiency is low because of high losses due to runoff and evaporation form the soul surface.
2.9 推动或妨碍实施本办法所适用的技术的条件
社会/文化/宗教规范和价值观
- 阻碍
People are resistant to change. Had to convince that they can get better yields with new technique.
Treatment through the SLM Approach: Interacting with people as much as possible and comparing yields on farmers days after harvest.
财务资源和服务的可用性/可得性
- 阻碍
Most can't afford inputs and to hire labour for construction of basins.
Treatment through the SLM Approach: Team will ask for discounts from providers and encourage team work amongst community.
法律框架(土地使用权、土地和水使用权)
- 启动
The existing land ownership, land use rights / water rights greatly helped the approach implementation: Land owners have little deeds and no law inhibits them from actively participating in the project.
3. 相关利益相关者的参与和角色
3.1 该方法涉及的利益相关者及其职责
- 当地土地使用者/当地社区
Land owners and local chiefs. Approach can only be implemented with their acceptance and approval. Specific ethnic groups: Black, resource poor farmers
Women tend to be submissive and docile. They look up to the men for decision making.
- SLM专家/农业顾问
- 国家政府(规划者、决策者)
- 国际组织
ARC - ISCW
3.2 当地土地使用者/当地社区参与该方法的不同阶段
当地土地使用者/当地社区的参与 | 指定参与人员并描述活动 | |
---|---|---|
启动/动机 | 无 | rapid/participatory rural appraisal |
计划 | 无 | |
实施 | 被动 | casual labour |
监测/评估 | 互动 | |
Research | 无 | on-farm; On-station experiments are conducted at Glen to evaluate different SWC techniques. The new technology is transferred by means of on-farm demonstration plots and information days. |
3.3 流程图(如可用)
3.4 有关SLM技术选择的决策
具体说明谁有权决定选择要实施的技术:
- 仅限SLM专家
解释:
land user driven (bottom-up). Realisation of poverty.
Decisions on the method of implementing the SLM Technology were made by mainly by land users supported by SLM specialists. land user driven (bottom-up). The need of land users to alleviate poverty.
4. 技术支持、能力建设和知识管理
4.1 能力建设/培训
是否为土地使用者/其他利益相关者提供培训?:
是
明确受训人员:
- 土地使用者
- extensionists/trainers
培训形式:
- 示范区域
- 公开会议
涵盖的主题:
Construction of basins; better understanding of the system in simple terms; the concept of infiltration, evapotranspiration; erosion and runoff.
4.2 咨询服务
土地使用者有权使用咨询服务吗?:
是
指明是否提供了咨询服务:
- 在固定中心
说明/注释:
NDA Extension; Key elements: Assistance in technology transfer, Organising public meetings, Establishing & link between specialists and land users;
1) Advisory service was carried out through: government's existing extension system. Extension staff: mainly government employees
2) Target groups for extension: land users; Activities: Technology transfer
Advisory service is quite adequate to ensure the continuation of land conservation activities; With a little persuasion, they assist completely.
4.3 机构强化(组织发展)
是否通过这种方法建立或加强了机构?:
- 是,少许
具体说明机构的强化或建立程度:
- 本地
具体说明支持类型:
- 能力建设/培训
4.4 监测和评估
监测和评估是该方法的一部分吗?:
是
注释:
bio-physical aspects were regular monitored through measurements
socio-cultural aspects were None monitored through measurements
economic / production aspects were None monitored through measurements
There were few changes in the Approach as a result of monitoring and evaluation: An organic mulch can be placed in the basins and on the runoff strip to stop evaporation losses. However cattle are allowed to graze in the land after the crop has been harvested. There after there is almost no organic mulch left to cover the soil surface. Stones were then suggested as an alternative mulch.
4.5 研究
研究是该方法的一部分吗?
是
明确话题:
- 社会学
- 经济/市场营销
- 技术
提供进一步的细节,并指出是谁做的研究:
Research was carried out both on station and on-farm
5. 融资和外部物质支持
5.1 该方法中SLM组成部分的年度预算
如果不知道准确的年度预算,请给出一个范围:
- 100,000-1,000,000
注释(例如主要的资助来源/主要捐助者):
Approach costs were met by the following donors: national non-government (Water Research Commission): 100.0%
5.2 为土地使用者提供财政/物质支援
土地使用者是否获得实施该技术的财政/物质支持?:
是
5.3 对特定投入的补贴(包括劳动力)
- 设备
具体说明哪些投入得到了补贴 | 程度如何 | 对补贴做出具体说明 |
---|---|---|
机械 | 充分融资 | |
工具 | 充分融资 | |
- 农业
具体说明哪些投入得到了补贴 | 程度如何 | 对补贴做出具体说明 |
---|---|---|
种子 | 充分融资 | |
化肥 | 充分融资 | |
Biocides | 充分融资 | |
如果土地使用者的劳动力是一项重要的投入,那么是不是:
- 以现金支付
6. 影响分析和结论性陈述
6.1 方法的影响
该方法是否帮助土地使用者实施和维护SLM技术?:
- 否
- 是,很少
- 是,中等
- 是,支持力度很大
N/A N/A
Did other land users / projects adopt the Approach?
- 否
- 是,很少
- 是,中等
- 是,支持力度很大
Team about to start a food security project adopting the WHB.
6.3 方法活动的可持续性
土地使用者能否维持通过该方法实施的措施(无外部支持的情况下)?:
- 是
6.4 该方法的长处/优点
土地使用者眼中的长处/优势/机会 |
---|
Produced higher yields. |
编制者或其他关键资源人员认为的长处/优势/机会 |
---|
Success of the WHB technique depends on suppressing water losses by runoff (R) and evaporation from the soil surface (Es). Measurements show that R has been reduced to zero and that Es has been reduced considerable, but still remains a serious avenue for water loss. (How to sustain/ enhance this strength: Future experimentation needs to focus on suppressing Es by any possible means.) |
The WHB treatment gives considerably better yields than the conventional treatment. (How to sustain/ enhance this strength: Results from more seasons are needed to quantify the extent of this difference in a reliable way.) |
Save on cultivation costs since no-till is employed. |
The WHB technique is ell suited for use on very small pots, and even in townships. Many people in semi-arid areas could be usefully employed if this technique was widely adapted, and food security could be increased at the same time. (How to sustain/ enhance this strength: Extension work in this connection by the PSDA needs to be encourage.) |
Soil loss from the land as a whole is zero. This is an important advantage over the conventional tillage in terms of sustainability. |
6.5 该方法的弱点/缺点以及克服它们的方法
土地使用者认为的弱点/缺点/风险 | 如何克服它们? |
---|---|
It is labour intensive to initially construct the basins, by hand. |
编制者或其他关键资源人员认为的弱点/缺点/风险 | 如何克服它们? |
---|---|
There is some soil movement form the runoff area into the basins, ad basins may silt up over time. | |
Huge storms may overflow and break basin walls; and basins may need some maintenance. | |
In the case of small rainfall events all the water may not reach the basins. | |
Organic mulch may act as a sponge and absorb some of the rainwater. |
7. 参考和链接
7.1 方法/信息来源
- 实地考察、实地调查
- 与土地使用者的访谈
7.2 参考可用出版物
标题、作者、年份、ISBN:
Optimising rainfall use efficiency for developing farmers with limited access to irrigation water, WRC Report No 878/1/00. Hensley, M; Botha, JJ; Anderson, JJ; Van Staden, PP & Du Toit, A. 2000Video 'In field Rainwater harvesting (1) Basic concepts to ensure agronomic and conservation sustainability in small scale farming'.The video illustrates the existing results obtained to enhance agronomic and conservation sustainability.
可以从哪里获得?成本如何?
R120. Leon van Rensburg, P/B X01, Glen, 9360. Debruint@glen.agric.za
标题、作者、年份、ISBN:
Optimising rainfall use efficiency for developing farmers with limited access to irrigation water, WRC Report No 878/1/00. Hensley, M; Botha, JJ; Anderson, JJ; Van Staden, PP & Du Toit, A. 2000
标题、作者、年份、ISBN:
Video 'In field Rainwater harvesting (1) Basic concepts to ensure agronomic and conservation sustainability in small scale farming'.
链接和模块
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Water Harvesting & Basin tillage [南非]
In-field water harvesting technique
- 编制者: Cobus Botha
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