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/评估的机构名称（如相关）

Dept. of Public Administration (Dept. of Public Administration) - 孟加拉国

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？:

14/03/2001

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:

Valley floor cultivation practiced by the rehabilitated tribal farmers through intensifying cultivation.

2.2 技术的详细说明

说明:

This technology is designed to maximize the land utilization through rice cultivation on terraced valley floor. Food production for household consumption is the main purpose of this technology. In additrion to this optimum utilization of underutilized valley floor is other purpose. The earlier vegetations were composed of cane, garjan, jarul and other bushy species. Usually the valley floor is slashed and cleared followed by levelling and modification of the natural terraces. The hill slope edges are cut to widen the cultivable area. The valley floor is opened at one end with a small outlet. The soil of the valley is sandy loam belonging to Brown Hill Soil with moderate fertility receiving high rainfall.

2.5 已应用该技术的、本评估所涵盖的国家/地区/地点

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:

• 作为传统系统的一部分（> 50 年）

注释（项目类型等）:

The origin is debated but one view is that it has come from migrants from the plain of greater Chittagong districts. (Recent - <10years)

3.1 该技术的主要目的

• 改良生产

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): Excessive and unjustified use of productive land; forests clearing, conversion to human habitation and associated soil erosion.

Major land use problems (land users’ perception): Water erosion, shade effects on crop production, very limited crop land, biotic interferance (illicit logging)

Type of cropping system and major crops comments: Boro - fellow - aman. Ocassionally Aaus paddy or limited vegetables is also tried/cultivated.

3.3 有关土地利用的更多信息

该技术所应用土地的供水:

• 混合雨水灌溉

每年的生长季节数:

• 2

具体说明:

Longest growing period in days: 120; Longest growing period from month to month: Dec - Mar; Second longest growing period in days: 90; Second longest growing period from month to month: Jun - Aug

3.4 该技术所属的SLM组

• 横坡措施

3.5 技术传播

具体说明该技术的分布:

• 均匀地分布在一个区域

如果该技术均匀地分布在一个区域上，请注明覆盖的大致区域。:

• 0.1-1 平方千米

注释:

Total area covered by the SLM Technology is 0.4 km2.

This technology originally started about 1960 then taken up more intensively from 2000.

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

4.2 技术规范/技术图纸说明

Technical knowledge required for field staff / advisors: low

Technical knowledge required for land users: low

Main technical functions: increase of infiltration

Secondary technical functions: reduction of slope angle, water spreading

Construction material (earth): All the structures viz. pit, trenches etc. are earthen.

Slope (which determines the spacing indicated above): 5.00%

If the original slope has changed as a result of the Technology, the slope today is: 5.00%

Lateral gradient along the structure: 2.50%

For water harvesting: the ratio between the area where the harvested water is applied and the total area from which water is collected is: 1:10.00

4.3 有关投入和成本计算的一般信息

其它/国家货币（具体说明）:

taka

注明美元与当地货币的汇率(如相关):1美元=:

59.0

4.4 技术建立活动

	活动	措施类型	时间
1.	land preparation and levelling	结构性的	50 man days
2.	terracing	结构性的	20 man days
3.	drainage	结构性的	20 man days
4.	cultivation	结构性的	20 man days

4.5 技术建立所需要的费用和投入

注释:

Duration of establishment phase: 0 month(s)

4.6 维护/经常性活动

	活动	措施类型	时间/频率
1.	Repairing/manding ridges and drainages	结构性的
2.	Reparing /Mending ridges & ridges	结构性的	2 days/each cropping season
3.	Mending the terraces	结构性的	2 days/each cropping season
4.	Weeding	结构性的	1 day/each cropping season

4.7 维护/经常性活动所需要的费用和投入（每年）

注释:

Area of paddy field/ local land unit is called Khani which equals 100 decimal

4.8 影响成本的最重要因素

描述影响成本的最决定性因素:

Labour shortage, animal shortaged, extreme humidity

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 depth on average: Deposited (soil) area

Soil fertility is medium: Generally the valley floor is fertile due to deposition of the nutrients washed from the valley.

Soil drainage / infiltration is medium since it changes between water logged and well drained situations.

Soil water storage capacity is medium

5.6 应用该技术的土地使用者的特征

说明土地使用者的其他有关特征:

Population density: < 10 persons/km2

Annual population growth: 1% - 2%

16% of the land users are rich and own 30% of the land (Above 10 acres.).
29% of the land users are average wealthy and own 35% of the land (Between >5 but <10 acres.).
55% of the land users are poor and own 35% of the land (The farmers who enjoy the right over 5 acres of land.).

Off-farm income specification: Basically the technology is concentrated on paddy cultivation and rice straw is the by product, which is used for livestock rearing.

Level of mechanization: Animal traction is required during the cultivation only.

5.8 土地所有权、土地使用权和水使用权

土地所有权:

• 个人，未命名
• 个人，有命名

土地使用权:

• 自由进入（无组织）
• 个人

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

• 1-10%

如若可行，进行量化（住户数量和/或覆盖面积）:

13 households covering 5 percent of stated area.

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:

13 land user families have adopted the Technology without any external material support

Comments on spontaneous adoption: survey results

There is a moderate trend towards spontaneous adoption of the Technology