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

有助于对技术进行记录/评估的项目名称（如相关）

Book project: where the land is greener - Case Studies and Analysis of Soil and Water Conservation Initiatives Worldwide (where the land is greener)

有助于对技术进行记录/评估的机构名称（如相关）

IWMI International Water Management Institute (IWMI) - 印度

有助于对技术进行记录/评估的机构名称（如相关）

International Development Enterprises - India (iDE-India) - 美国

1.3 关于使用通过WOCAT记录的数据的条件

（现场）数据是什么时候汇编的？:

01/01/2005

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

1.5 请参阅有关SLM方法的问卷

2.1 技术简介

技术定义:

A grassroots innovation that offers most of the advantages of conventional micro-irrigation at a much lower establishment cost.

2.2 技术的详细说明

说明:

The continued expansion of irrigation in India is causing increasing water shortages. This may be compounded by the potential effects of climate change. Drip irrigation - delivering small amounts of water directly to the plants through pipes - is a technology that could help farmers deal with water constraints. It is considerably more efficient in terms of water use than the usual open furrows or flood irrigation.
In West Nimar, Madhya Pradesh, droughts, diminishing groundwater, limited and erratic power supply coupled with poverty, compelled farmers to look for a technology that would enable them to irrigate their crops (mainly cotton) within these constraints. They tried out several cost-saving options such as using old bicycle tubes instead of the conventional drip irrigation pipes. But nothing caught on - until about five years ago - when a local farmer experimented with thin poly-tubing normally used for frozen fruit-flavoured ‘lollypops’ called pepsee. It spread to neighbouring cotton farmers, and its popularity has meant that today pepsee has become widespread in the region. Pepsee micro-irrigation systems slowly and regularly apply water directly to the root zone of plants through a network of economically designed plastic pipes and low-discharge emitters.
Technically speaking pepsee systems use low density polythene (65-130 microns) tubes which are locally assembled. Being a low pressure system the water source can be an overhead tank or a manually operated water pump to lift water from a shallow water table.
Such a system costs less than US$ 40 per hectare for establishment. But the tubes have a short life span of one (or two) year(s); an equivalent standard buried strip drip irrigation system amounts to between five and ten times the initial cost. The latter would, however, last for five to ten years. The critical factor is the low entry cost. Pepsee systems thus act as ‘stepping stones’ for poor farmers who are facing water stress but are short of capital and cannot afford to risk relatively large investment in a technology which is new to them, and whose returns are uncertain. The technology is today available in two variants: the original white pepsee and a recently introduced black pepsee which is of slightly better quality.
Recently, a more durable and standardised version of pepsee, given the brand name ‘Easy Drip’, has been developed and promoted by a local NGO, IDEI (see corresponding approach). Easy Drip is one product within a set of affordable micro-irrigation technologies (AMIT) promoted by IDEI.

2.3 技术照片

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

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

3.1 该技术的主要目的

• 改良生产
• 创造有益的经济影响

3.2 应用该技术的当前土地利用类型

注释:

Major land use problems (compiler’s opinion): Acute groundwater stress associated with lowering of the groundwater table limits water for irrigation, coupled with poverty and reluctance to risk investing in relatively expensive- but efficient - drip irrigation systems.

3.3 有关土地利用的更多信息

该技术所应用土地的供水:

• 充分灌溉

每年的生长季节数:

• 2

具体说明:

Longest growing period in days: 150 Longest growing period from month to month: May - Oct Second longest growing period in days: 120 Second longest growing period from month to month: Nov - Mar

3.4 该技术所属的SLM组

• 灌溉管理（包括供水、排水）

3.6 包含该技术的可持续土地管理措施

3.7 该技术强调的主要土地退化类型

注释:

Main type of degradation addressed: Hq: decline of groundwater quality

Main causes of degradation: deforestation / removal of natural vegetation (incl. forest fires), other human induced causes (specify) (agricultural causes), education, access to knowledge and support services (lack of knowledge)

Secondary causes of degradation: over-exploitation of vegetation for domestic use, overgrazing, droughts, land tenure (land subdivision), Land alienation

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

4.1 该技术的技术图纸

4.2 技术规范/技术图纸说明

Components of pepsee/‘Easy Drip’ irrigation systems are described below.
1) Water source: For pepsee, commonly a water pump (in most cases electric) is used to lift water from a well and directly feed the irrigation system.
Alternatively, an overhead tank (minimum of 1 m above ground level) can be used for smaller systems up to 400 m2 area.
2) Control valve: valve made of plastic or metal to regulate pressure and flow of water into the system
3) Filter: Strainer filter to ensure that clean water enters into the system (optional in pepsee systems).
4) Mainline: 50 mm PVC (Polyvinyl chloride) or PE (Polyethylene) pipe to convey water from source to the sub-main.
5) Sub-main: PVC/PE pipe to supply water to the lateral pipes which are connected to the sub-main at regular intervals.
6) Lateral: PE pipes along the rows of the crops on which emitters are connected directly. Pipe size is 12–16 mm.
7) Emitters/micro-tubes: Device through which water is emitted at the root zone of the plant with required discharge. In pepsee farmers simply make pin holes in the plastic tube for water to pass. Easy Drip has inbuilt drippers/outlets along the lateral line which give a continuous wetting strip.
It is mainly used for row crops.
Pepsee uses cheap, recycled plastic tubes instead of the rubber pipes used in conventional drip irrigation kits. Space between emitters is variable, for cotton cultivation it is commonly 1.2 m (between plants, within and between rows). There is (usually) one emitter for each plant. Different sizes of valves, mainlines, etc, are available, depending on flow rate of water in the system. Additional components are joints (connectors) and pegs (used to hold the lateral and micro-pipes in place).

Technical knowledge required for land users: moderate

Main technical functions: water supply, improved water-use efficiency (reduced loss, well directed, selective - and targeted irrigation

Secondary technical functions: improvement of ground cover, higher - germination and establishment rate

Structural measure: irrigation infrastructure

Construction material (other): poly-tubes - low density polythene (65-130 microns)

Change of land use practices / intensity level: from furrow to drip irrigation

4.4 技术建立活动

	活动	措施类型	时间
1.	Installation of water pump, control valve, filter (optional) and PVC piping(main/sub-main and lateral pipes).	结构性的	dry season

4.5 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	4.0	4.0	100.0
施工材料	Lateral piping (Pepsee tube)	ha	1.0	17.0	17.0	100.0
施工材料	Main/sub-main PVC piping	ha	1.0	34.0	34.0	100.0
施工材料	Other parts (valves, joints et	ha	1.0	40.0	40.0	100.0
技术建立所需总成本					95.0

注释:

Duration of establishment phase: 1 month(s)

4.6 维护/经常性活动

	活动	措施类型	时间/频率
1.	Re-installation of lateral pepsee tubes	结构性的	dry season/ (every 1–2 years).

4.7 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	4.0	4.0	100.0
施工材料	Lateral piping (Pepsee tube)	ha	1.0	17.0	17.0	100.0
技术维护所需总成本					21.0

5.1 气候

5.2 地形

5.3 土壤

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 texture: Fine/heavy (black cotton soil; mostly vertisols, partly inceptisols and entisols)
Soil drainage/infiltration: Poor

5.6 应用该技术的土地使用者的特征

5.7 应用该技术的土地使用者拥有或租用的平均土地面积

5.8 土地所有权、土地使用权和水使用权

土地所有权:

• 个人，有命名

土地使用权:

• 个人

6.1 该技术的现场影响

社会经济效应

生产

收入和成本

其它社会经济效应

社会文化影响

生态影响

其它生态影响

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）？

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）？

6.5 技术采用

在所有采用这项技术的人当中，有多少人是自发地采用该技术，即未获得任何物质奖励/付款？:

• 90-100%

注释:

100% of land user families have adopted the Technology without any external material support

There is a moderate trend towards spontaneous adoption of the Technology

Comments on adoption trend: No detailed information available regarding spread - though this is estimated to be several thousand farmers within West Nimar. All adoption has been spontaneous, without incentives, and the group which has adopted best comprises those who were previously using furrow irrigation. A large number of pepsee adopters are the resource poor farmers but rich farmers have also adopted pepsee.

6.7 该技术的优点/长处/机会

编制者或其他关键资源人员认为的长处/优势/机会
Low initial investment and recurrent costs: risk in adopting new system limited How can they be sustained / enhanced? Keep costs of new variations of pepsee low.
There are significant benefits in terms of reduced water use per unit of land, and in terms of yield per unit land area as well.
Few extra skills required to implement and operate the system.
An eventual shift to conventional drip system is feasible: pepsee acts as a ’stepping stone’ How can they be sustained / enhanced? Promote improved drip systems where pepsee has taken off.
Higher yields, better quality, higher germination rate, lower incidence of pest attack; facilitates pre-monsoon sowing.

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？
Pepsee is based on drip pipes which have a limited life: delicate and cannot withstand high pressure	Develop/use stronger piping materials such as ‘Easy Drip’.
The increased water use efficiency has allowed an expansion in the area irrigated – which has used up the water ‘saved’.	Develop/use stronger piping materials such as ‘Easy Drip’.
Pepsee systems require replacement of lateral pipes each year and thus incur recurrent input and labour costs

7.2 参考可用出版物

标题、作者、年份、ISBN:

Verma S, Tsephal S. and Jose T: Pepsee Systems: grassroots innovation under groundwater stress. Water Policy, 6,
pp. 303–318.. 2004.

标题、作者、年份、ISBN:

http://www.iwaponline.com/wp/00604/wp006040303.htm