Название практики |
Application of tubular outlet flowmeters |
Using portable polyethylene trays (PPL-50) of semi-circular section for сrop watering |
Категория |
Водные ресурсы |
Водные ресурсы |
Инструмент |
Средства и методы водоучета |
Техника и технология полива |
Сфера использования практики |
Use of water resources |
- Use of water resources
- Use of land resources
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Пригодность практики для адаптации к изменению климата |
Умеренная |
Умеренная |
Кем реализована практика |
Institute of Water Issues, Hydropower and Ecology of the Academy of Sciences of the Republic of Tajikistan (IWIHE of the AS of the RTj)
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International Center for Agricultural Research in the Dry Areas (ICARDA)
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Где использована практика |
Страна: Таджикистан
Область: Хатлонская
Район: Джиликульский
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Страна: Узбекистан
Область: Ташкентская
Район: Паркентский
Другой населенный пункт: Baikazan Farm
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Специфика местности, где использована практика |
- Located in the valley part of the Vakhsh River Basin (river catchment area);
- Deep (below 3 meters) ground water occurrence;
- Middle loamy soils.
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Steep foothill terrain |
Когда использована практика |
Дата начала: 01.04.2010
Дата окончания: 31.10.2011
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Дата начала: 01.01.2006
Дата окончания: 31.12.2006
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Проблема, которая решается применением практики |
Uneven distribution of irrigation water, lack of water accounting means to ensure observance of recommended irrigation norms for cotton |
Issues: loss of water in temporary water distributers, low plot use ratio, difficulties with regulating water supply to irrigation furrows, low irrigator labor productivity |
Примененные в практике инструменты |
Tubular water outlet flowmeter |
Portable polyethylene trays (PPL-50) of semi-circular section |
Описание практики и ее результаты |
Actions:
- Construction of tubular water outlet flowmeter with removable nozzles (procurement of polyethylene piping to make tubular water outlets and matching nozzles); - Installation of tubular water outlet flowmeter along temporary sprinklers.
Results:
Financial and economic:
saving of irrigation water; low cost of irrigation system automation (total kit cost: $500/ha) with the service life of 5 years.
Technical:
simple design allowing a more even distribution of irrigation water stream among furrows, thus, ensuring the prescribed water supply mode.
Social:
improved working conditions of irrigators; lower labor needs/costs; enhanced mutual trust among farmers and water users. |
Actions:
- Water supply using PPL-50 is possible from: a) reinforced concrete trays, b) covered network, c) temporary earthen water distributers;
- Prior to watering, the trays are manually distributed along the route and installed with required inclination perpendicular to the furrows in the beginning of the irrigated site. Sections are inserted into each other;
- After adjustment, the kit is capable of ensuring the desired watering regime;
- In case of long furrows (150+ m) layer watering is used with the application of flexible polyethylene film hoses (D=300 mm);
- Depending on specific site conditions, inter-row spacing and crop type, the size of irrigation streams is regulated by way of adjusting the water supply control gate.
Results:
- 20-30% reduction of field unproductive losses;
- Increased productivity (2-4 dt/ha for wheat, 3-4 dt/ha for cotton);
- At least twofold increase of irrigator labor productivity;
- Increased land use ratio (1.5-2.5%).
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Какие уроки и рекомендации можно извлечь из практики |
Lessons learnt:
Installation and deployment of tubular water outlet flowmeter allows to improve the uniformity of irrigation stream’s distribution among furrows and conduct irrigation water accounting.
Recommendations:
It is necessary to widely use the small-scale irrigation automation means like the tubular water outlet flowmeters which have simple design, are convenient to operate, are low-cost and mobile and ensure supply of the prescribed amount of irrigation water. |
Lessons learnt:
PPL-50 can be used for watering cotton with 0.9 and 0.6 m row-spacing as well as vegetable and cucurbit crops with 0.3 m row-spacing.
Recommendations:
It is recommended to apply:
- PPL-50 (D=300 mm) in steep foothill conditions;
- PPL-50 (D=500 mm) in flat terrain;
- Prior to using the system in flat terrain conditions, it is desirable to do land planning.
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Источник практики |
Domestic tools (outcomes of research by domestic R&D organizations) |
Domestic tools (outcomes of research by domestic R&D organizations) |
Готовность практики к внедрению |
1. Затраты на внедрение: Высокие
2. Примерная стоимость капиталовложений на 1 га:
3. Затраты на поддержание и эксплуатацию: Высокие
4. Экспертная поддержка: Не требуется
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1. Затраты на внедрение: Умеренные
2. Примерная стоимость капиталовложений на 1 га: $7.6
3. Затраты на поддержание и эксплуатацию: Умеренные
4. Экспертная поддержка: Требуется на стадии внедрения
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Краткая информация о проекте |
Project title: Watering technology based on tubular water outlet flowmeters.
Project duration: Apr 2010-Oct 2011.
Project goal and objectives: development and deployment of a crop watering technology for dekhan farms of the Republic of Tajikistan allowing to significantly increase the efficiency of water use.
Project beneficiaries: members of “Istikol” WUA (Water User Association).
Project implementer: Institute of Water Issues, Hydropower and Ecology of the Academy of Sciences of the RTj |
Project title: Adaptation of contour furrows and layer watering via portable trays: research on establishing permanent furrows on the premises of Baikazan Farm of Parkent District.
Project duration: 2005-2006.
Project goal and objectives: improve local living standards and food security among rural residents as well as preserve soil fertility in farms located on sloped terrain by way of watering via contour furrows based on the greatest inclination and layer arrangement of assembly polyethylene trays. The short-term project objective was to demonstrate the technology of watering via contour furrows based on the greatest inclination of sloped terrain and layer arrangement of assembly polyethylene trays.
Project beneficiaries: farms and dekhan farms.
Project implementer: ICARDA |
Источник финансирования практики |
“Tajikistan Water Partnership” NGO |
Asian Development Bank (ADB) |
Источники информации о практике |
Report by the Innovation Technology Department of the IWIHE of the AS of the RTj, Dushanbe, 2012, 45 p. |
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Контактные данные лица, заполнившего форму |
SIC ICWC |
SIC ICWC |
Дата заполнения формы |
02.04.2018 |
04.05.2018 |