技术

Sorghum Terrace of Diredawa (STD) [埃塞俄比亚]

Daga (Oromifa)

technologies_1067 - 埃塞俄比亚

完整性: 69%

1. 一般信息

1.2 参与该技术评估和文件编制的资源人员和机构的联系方式

关键资源人

SLM专业人员:
SLM专业人员:

Aberra Wondwosen

Dire Dawa Agricultural and Rural Development Office

埃塞俄比亚

有助于对技术进行记录/评估的机构名称(如相关)
FAO Food and Agriculture Organization (FAO Food and Agriculture Organization) - 意大利
有助于对技术进行记录/评估的机构名称(如相关)
Ministry of Agriculture and Rural Development (Ministry of Agriculture and Rural Development) - 埃塞俄比亚

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。:

2. SLM技术的说明

2.1 技术简介

技术定义:

It is a structural measure constructed across the slope to control erosion and increase soil moisture.

2.2 技术的详细说明

说明:

Sorghum terrace of Diredawa locally called as Daga is constructed by placing stone walls across a slope following contour lines. The development of Sorghum terrace involves activities of creating an embankment at a given spacing, which depends on slope. Cultivation in the terrace is done by the use of Dengora (local name for spade like hand tool) if the land is sloping and by oxen if land slope is gentle (<8%). The purpose of developing Sorghum Terrace of Diredawa (STD) is to collect as much rainwater as possible for growing sorghum, which is planted by broad casting. Sorghum is the staple food in the area. Since rainfall is erratic, the STD allows more water to be stored in the soil. STD is maintained every year and also upgraded while performing different farm activities (Ploughing, Weeding, etc.,). Every time maintenance is made breaks in the terrace are repaired and additional height given to the terrace until it forms bench. STD is very suitable to areas with erratic rainfalls, sloping cultivated fields and land having abandant stones for construction. It is suitable to areas with semi-arid to arid climatic conditions and soils ranging from shallow depth to moderately deep.

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

国家:

埃塞俄比亚

区域/州/省:

Dire Dawa

有关地点的进一步说明:

Dire Dawa

具体说明该技术的分布:
  • 均匀地分布在一个区域
如果不知道精确的区域,请注明大致覆盖的区域:
  • 100-1,000 平方千米

2.6 实施日期

如果不知道确切的年份,请说明大概的日期:
  • 50多年前(传统)

2.7 技术介绍

详细说明该技术是如何引入的:
  • 通过项目/外部干预

3. SLM技术的分类

3.1 该技术的主要目的

  • 改良生产
  • 减少、预防、恢复土地退化

3.2 应用该技术的当前土地利用类型

同一土地单元内混合使用的土地::

具体说明混合土地使用(作物/放牧/树木):
  • 农林牧业

农田

农田

  • 一年一作
  • 乔木与灌木的种植
年作 - 具体指明作物:
  • 谷类 - 高粱
  • 豆科牧草和豆类 - 豆子
  • 根/块茎作物 - 土豆
  • chat
乔木和灌木种植 - 指定作物:
  • 芒果、山竹果、番石榴
  • 木瓜
每年的生长季节数:
  • 1
具体说明:

Longest growing period in days: 180 Longest growing period from month to month: Apr - Oct

采用间作制度了吗?:

如果是,说明哪些作物是间作的:

Sorghum + Potato

牧场

牧场

粗放式放牧:
  • 半游牧畜牧业
集约放牧/饲料生产:
  • 收割和携带/零放牧
动物类型:
  • 山羊
品种:

山羊

计数:

2

森林/林地

森林/林地

产品和服务:
  • 木材
  • 薪材
  • 放牧/啃牧
  • fodder
注释:

Major land use problems (compiler’s opinion): The major land use problems in the areas with out SWC are overgrazing/overbrowsing by livestock specially by the small stock. Goats over browse shrubs in hill slope letting it to be bare and hence enhance erosion. Cutting of trees/shrub for fire wood denudes hillsides.

Major land use problems (land users’ perception): Declining status of the vegetative cover led to lack of wood for construction and fire wood.

Semi-nomadism / pastoralism: Yes

Grazingland comments: A substantial area has been closed around the technology area. Livestock owners are given the opportunity to cut grass from enclosures and carry it home to stall feed the animals. Most farmers like to stallfeed their animals. Number of livestock in the area is small and is limited to 1 or 2 of large stock and 2-3 of small stocks.

Problems / comments regarding forest use: Individual households plant agroforestry trees (fruits, shade trees, hedgerows) in the homestreads and on field boundaries. Trees naturally grown are maintained in scattered manner in crop fields. These are primarily used as shelter for animals that are tethered and also used as fodder and fuelwood.

Forest products and services: timber, fuelwood, grazing / browsing

Type of cropping system and major crops comments: Sorghum-beans

3.3 由于技术的实施,土地使用是否发生了变化?

由于技术的实施,土地使用是否发生了变化?:
  • 是(请在技术实施前填写以下有关土地利用的问题)
注释:

from grazing to cultivated land

3.4 供水

该技术所应用土地的供水:
  • 雨养
注释:

Water supply: Also post-flooding

3.5 该技术所属的SLM组

  • 改良的地面/植被覆盖
  • 横坡措施

3.6 包含该技术的可持续土地管理措施

农艺措施

农艺措施

  • A2:有机质/土壤肥力
  • A3:土壤表面处理
注释:

Main measures: structural measures

Secondary measures: agronomic measures, vegetative measures

Type of agronomic measures: early planting, mixed cropping / intercropping, contour planting / strip cropping, mulching, green manure, manure / compost / residues, contour tillage

Type of vegetative measures: aligned: -contour

3.7 该技术强调的主要土地退化类型

土壤水蚀

土壤水蚀

  • Wt:表土流失/地表侵蚀
注释:

Main type of degradation addressed: Wt: loss of topsoil / surface erosion

3.8 防止、减少或恢复土地退化

具体数量名该技术与土地退化有关的目标:
  • 减少土地退化
  • 修复/恢复严重退化的土地
注释:

Main goals: mitigation / reduction of land degradation

Secondary goals: rehabilitation / reclamation of denuded land

4. 技术规范、实施活动、投入和成本

4.1 该技术的技术图纸

技术规范(与技术图纸相关):

DireDawa

Technical knowledge required for field staff / advisors: moderate

Technical knowledge required for land users: moderate

Main technical functions: reduction of slope angle, increase of infiltration, increase / maintain water stored in soil

Secondary technical functions: water harvesting / increase water supply, sediment retention / trapping, sediment harvesting

Early planting
Material/ species: Sorghum + Chat
Quantity/ density: 17500 +400

Mixed cropping / intercropping
Material/ species: Sorghum + Potato

Contour planting / strip cropping
Material/ species: Sorghum + Chat

Mulching
Material/ species: Sorghu Stalk/residue

Green manure
Material/ species: Sorghum/Chat-beans

Manure / compost / residues
Material/ species: Sorghum/Chat

Contour tillage
Remarks: Ploughing along the contour

Aligned: -contour
Vegetative material: O : other
Number of plants per (ha): 17500-2000
Spacing between rows / strips / blocks (m): 0.2
Vertical interval within rows / strips / blocks (m): 0.2-0.3

Perennial crops species: Chat

Slope (which determines the spacing indicated above): 10.00%

If the original slope has changed as a result of the Technology, the slope today is (see figure below): 3.00%

Gradient along the rows / strips: 0.00%

Terrace: backward sloping
Vertical interval between structures (m): 1-2
Spacing between structures (m): 4-6
Height of bunds/banks/others (m): 1
Width of bunds/banks/others (m): 0.5-2
Length of bunds/banks/others (m): 50-300

Bund/ bank: level
Vertical interval between structures (m): 1-2
Height of bunds/banks/others (m): 1
Width of bunds/banks/others (m): 0.3-0.5
Length of bunds/banks/others (m): 50-300

Construction material (earth): earth is placed upslope of the stone wall to provide reinforcement

Construction material (stone): stone is used for the embankment

Slope (which determines the spacing indicated above): 12%

If the original slope has changed as a result of the Technology, the slope today is: 4%

Lateral gradient along the structure: 0%

Vegetation is used for stabilisation of structures.

Change of land use type: from grazing to cultivated land

Control / change of species composition: from mono-cropping to mixed cropping

4.2 有关投入和成本计算的一般信息

其它/国家货币(具体说明):

Birr

如相关,注明美元与当地货币的汇率(例如1美元=79.9巴西雷亚尔):1美元=:

8.6

注明雇用劳工的每日平均工资成本:

0.71

4.3 技术建立活动

活动 时间(季度)
1. Chat planting by cutting early rains
2. Sorghum planting early rains
3. Sowing with rains & withdrawal of rains
4. Contour marking & layout dry period/after harvest
5. Digging foundation after light rains/moist soil
6. Stone collection dry season
7. Stone wall placement after light rains/moist soil
8. Earth support upslope after light rains/moist soil
9. Clear vegetation dry period
10. Construct Daga dry season
11. Land preparation after the 1st rains

4.4 技术建立所需要的费用和投入

对投入进行具体说明 单位 数量 单位成本 每项投入的总成本 土地使用者承担的成本%
劳动力 Labour ha 1.0 272.0 272.0 50.0
设备 Animal traction ha 1.0 20.0 20.0 100.0
设备 Tools ha 1.0 4.0 4.0 100.0
植物材料 Seeds ha 1.0 5.0 5.0 100.0
肥料和杀菌剂 Compost manure ha 1.0 100.0
技术建立所需总成本 301.0
技术建立总成本,美元 35.0
注释:

Duration of establishment phase: 12 month(s)

4.5 维护/经常性活动

活动 时间/频率
1. Tillage dry season / 2-3
2. Sowing dry season / each cropping season
3. Cultivation early rains, after sawing, before flowering / each cropping season
4. Weeding after flowrinf / each cropping season
5. Harvest dry season, after crop matures / each cropping season
6. Cultivation during rains /2
7. Weeding withdrawal of rains /1
8. Stone collection dry season/1
9. Repairing breaks before planting/1
10. Add stone wall height/upgrading before planting/1
11. Plant stablizing/ trees/shrubs after rains/1
12. Planting of useful trees & fruit trees after rains / annual
13. Cultivation and weeding during rains / 2

4.6 维护/经常性活动所需要的费用和投入(每年)

对投入进行具体说明 单位 数量 单位成本 每项投入的总成本 土地使用者承担的成本%
劳动力 Labour ha 1.0 40.7 40.7 100.0
技术维护所需总成本 40.7
技术维护总成本,美元 4.73
注释:

Machinery/ tools: hand tools for digging earth and breaking stone

The cost is mainly for construction and maintenance of the structural measures and cost of production.

4.7 影响成本的最重要因素

描述影响成本的最决定性因素:

Slope:- As the slope increases cost of construction increases, Soil depth:- when the soil depth is shallow digging the foundation becomes more costly.

5. 自然和人文环境

5.1 气候

年降雨量
  • < 250毫米
  • 251-500毫米
  • 501-750毫米
  • 751-1,000毫米
  • 1,001-1,500毫米
  • 1,501-2,000毫米
  • 2,001-3,000毫米
  • 3,001-4,000毫米
  • > 4,000毫米
指定年平均降雨量(若已知),单位为mm:

600.00

农业气候带
  • 半干旱

5.2 地形

平均坡度:
  • 水平(0-2%)
  • 缓降(3-5%)
  • 平缓(6-10%)
  • 滚坡(11-15%)
  • 崎岖(16-30%)
  • 陡峭(31-60%)
  • 非常陡峭(>60%)
地形:
  • 高原/平原
  • 山脊
  • 山坡
  • 山地斜坡
  • 麓坡
  • 谷底
垂直分布带:
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
关于地形的注释和进一步规范:

Landforms: Also hill slopes (ranked 2) and valley floors (ranked 3)
Slopes on average: Also hilly (ranked 2) and moderate as well as gentle (both ranked 3)

5.3 土壤

平均土层深度:
  • 非常浅(0-20厘米)
  • 浅(21-50厘米)
  • 中等深度(51-80厘米)
  • 深(81-120厘米)
  • 非常深(> 120厘米)
土壤质地(表土):
  • 粗粒/轻(砂质)
  • 中粒(壤土、粉土)
表土有机质:
  • 低(<1%)
如有可能,附上完整的土壤描述或具体说明可用的信息,例如土壤类型、土壤酸碱度、阳离子交换能力、氮、盐度等。:

Soil fertility is low (ranked 1), medium (ranked 2) and very low (ranked 3)
Soil drainage/infiltration is good
Soil water storage capacity is low (ranked 1), medium (ranked 2) and very low (ranked 3)

5.6 应用该技术的土地使用者的特征

生产系统的市场定位:
  • 生计(自给)
  • 混合(生计/商业)
非农收入:
  • 低于全部收入的10%
相对财富水平:
  • 贫瘠
  • 平均水平
机械化水平:
  • 手工作业
  • 畜力牵引
说明土地使用者的其他有关特征:

Population density: 50-100 persons/km2
Annual population growth: 2% - 3%
40% of the land users are average wealthy and own 60% of the land.
60% of the land users are poor and own 40% of the land.
Off-farm income specification: Land users who have SWC on their land spend more time in agricultural activities compared to those who have not applied SWC measures.
Level of mechanization: Manual work (ranked 1, on steeper slopes where terraces are closer manual labour is used) and animal traction (ranked 2, on gentle slopes animal traction is used for tillage and cultivation)
Market orientation of cropland production system: Subsistence ( They do not produce enough for their own consumption in case of sorghum/cereal crops but chat is produced more for market, ranked 1) and mixed (ranked 2)
Market orientation of forest production system: Subsistence (Chat is planted for consumption as well as market, ranked 1) and mixed (Farmers sell part of the grain they have produced)
Market orientation of production system: mixed (subsistence and commercial) (Farmers sell part of the grain they have produced.)

5.7 应用该技术的土地使用者使用的平均土地面积

  • < 0.5 公顷
  • 0.5-1 公顷
  • 1-2 公顷
  • 2-5公顷
  • 5-15公顷
  • 15-50公顷
  • 50-100公顷
  • 100-500公顷
  • 500-1,000公顷
  • 1,000-10,000公顷
  • > 10,000公顷
注释:

Most of the open access grazing land and degraded hills where animal graze is communal land.

6. 影响和结论性说明

6.1 该技术的现场影响

社会经济效应

生产

作物生产

降低
增加
注释/具体说明:

Because of high moisture in the soil

饲料生产

降低
增加
注释/具体说明:

multipurpose tree species with good production potential are planted.

饲料质量

降低
增加
注释/具体说明:

multipurpose tree species with good production potential are planted.

生产区域

降低
增加
注释/具体说明:

due to structures occupying land

土地管理

妨碍
简化
注释/具体说明:

due to structural obstraction

收入和成本

农业收入

降低
增加

社会文化影响

社区机构

削弱
加强

国家机构

削弱
加强

冲突缓解

恶化
改良

生态影响

水循环/径流

地表径流

增加
降低
SLM之前的数量:

50

SLM之后的数量:

0

土壤

土壤水分

降低
增加

土壤流失

增加
降低
SLM之前的数量:

100

SLM之后的数量:

5

其它生态影响

Soil fertility

decreased
increased

6.2 该技术的场外影响已经显现

下游洪水

增加
减少

下游淤积

增加
降低

6.4 成本效益分析

技术收益与技术建立成本相比如何(从土地使用者的角度看)?
短期回报:

轻度消极

长期回报:

稍微积极

技术收益与技术维护成本/经常性成本相比如何(从土地使用者的角度看)?
短期回报:

中性/平衡

长期回报:

非常积极

6.5 技术采用

在所有采用这项技术的人当中,有多少人是自发的,即未获得任何物质奖励/付款?:
  • 11-50%
注释:

30% of land user families have adopted the Technology with external material support

20% of land user families have adopted the Technology without any external material support

6.7 该技术的优点/长处/机会

土地使用者眼中的长处/优势/机会
Production increased

How can they be sustained / enhanced? external support with incentives such as tools, material for constructing structures for flood and runoff diversion.
more soil moisture

How can they be sustained / enhanced? integration of measures that reduces evapotranspiration
Soil erosion controlled

How can they be sustained / enhanced? exercise effective maintenance
编制者或其他关键资源人员认为的长处/优势/机会
have higher efficiency for retaining water in the soil

How can they be sustained / enhanced? Strengthening maintenance, avoid livestock,exercise stall feeding, enhancing runoff and flood farming
mantenance is simple because material is available
Forms bench terrace easily
Soil loss is remarkably reduced
Production doubled and even increased by 150-200%

6.8 技术的弱点/缺点/风险及其克服方法

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?
hindering movement provide path way for humans and oxen during farm operation

7. 参考和链接

7.1 信息的方法/来源

模块