Irrigation canal that brings freshwater to arable land (Vasileios Diamantis)
In low-lying regions suffering from overuse of the ground water for irrigation and seawater intrusion, pumping groundwater is detrimental and results in soil degradation (salinization) and reduced plant growth.
Purpose of the Technology: For this reason, freshwater is transported over distances of up to 500 m (or more) from surface streams, for irrigation using water of better quality. In this way, overexploitation of the aquifer is being reduced.
Establishment / maintenance activities and inputs: The pumps transfer water from canals or streams for irrigation purposes. A pumping station (10HP), pipes (PP-R, Ø 1100mm) for water transport and diesel or electricity for pump operation are the major items needed to replace groundwater with freshwater irrigation. However, annual maintenance of the pump and network is necessary.
Natural / human environment: The majority of families living in the research area make their living mostly from agricultural activities but also from livestock. Croplands are dominantly irrigated by wells (groundwater) and only those which are close to streams are irrigated with freshwater. Owing to over-pumping of the aquifer in order to irrigate the crop fields, there has been seawater intrusion over the past years. As a result, irrigation with groundwater led to saline soils. The group affected by this process comprises farmers who are now beginning to understand the extent of the desertification problem in the area. The degradation process significantly affects the quality of life of the local people. Saline soils lead to low productivity and thus to lower incomes (causing poverty) and thus an increase in social unrest. Although the farmers are totally aware of the on-going degradation problem that affects their fields and their livelihoods, they seem to be unwilling to change the way they irrigate their fields (with groundwater) as long as they do not have an alternative source of irrigation such as freshwater from local streams. The lack of information about how the salt-affected fields can be restored also makes the farmers believe that this situation is permanent and will extend over a wider area.
地点: Eastern Macedonia and Thrace, Prefecture of Xanthi, 希腊
分析的技术场所数量:
技术传播:
在永久保护区？:
实施日期: 不到10年前（最近）
介绍类型
| 对投入进行具体说明 | 单位 | 数量 | 单位成本 (euro) | 每项投入的总成本 (euro) | 土地使用者承担的成本% |
| 劳动力 | |||||
| Labour | Irrigation network | 1.0 | 969.0 | 969.0 | 100.0 |
| 设备 | |||||
| hire of an ecavator | Irrigation network | 1.0 | 1107.0 | 1107.0 | 100.0 |
| Pumping station | Irrigation network | 1.0 | 3460.0 | 3460.0 | 100.0 |
| 施工材料 | |||||
| Water transport pipes | Irrigation network | 1.0 | 100.0 | ||
| 其它 | |||||
| Diesel fuel (1 Lt) | Liter | 1.0 | 1.4 | 1.4 | 100.0 |
| Electricity (1 Kw) | Liter | 1.0 | 0.4 | 0.4 | 100.0 |
| 技术建立所需总成本 | 5'537.8 | ||||
| 技术建立总成本，美元 | 7'911.14 | ||||
| 对投入进行具体说明 | 单位 | 数量 | 单位成本 (euro) | 每项投入的总成本 (euro) | 土地使用者承担的成本% |
| 劳动力 | |||||
| Labour | Irrigation network | 1.0 | 138.0 | 138.0 | 100.0 |
| 设备 | |||||
| Hire of an ecavator | Irrigation network | 1.0 | 275.0 | 275.0 | 100.0 |
| Pumpiong station | Irrigation network | 1.0 | 200.0 | 200.0 | 100.0 |
| 其它 | |||||
| diesl fuel or erlectricity | Irrigation network | 1.0 | 1512.0 | 1512.0 | 100.0 |
| 技术维护所需总成本 | 2'125.0 | ||||
| 技术维护总成本，美元 | 3'035.71 | ||||
SLM之前的数量: 3.4t/ha
SLM之后的数量: 4.2t/ha
Increased, but: Sodic soils may first require gypsoum application
Less salinity risk
Due to increased demand for freshwater
Due to increased demand for freshwater
Freshwater for irrigation from streams/river
Requires funding for implementation
Better crop quality
Income increase and thus well-being.
For sodic soils
Due to water abstraction from streams/river for irrigation
Due to reduced groundwater exploitation
