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？:

21/11/1997

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

2.1 技术简介

技术定义:

Uprightness to the main windward, planting Vetiver hedge as barriers to prevent wind erosion.

2.2 技术的详细说明

说明:

This technology is to use a good SWC vegetable --- Vetiver to form permanent hedge barrier. The barrier is upright to the main windward or along the river & dike bank. It is pruned 1-2 times after 2 months of planting. It can grow at about 1.5 m high within one year. Vetiver is a perennial plant, and has a strong fibrous roots, which can stretch 3 m beneath soils. It breeds by root & cane, and has strong adaptability. Vetiver is hygrophobe and can endure poor and saline-alkali soil. It is regarded as a saved money & low in labor input but with good benefits. This SWC technology is worth to be applied extensively.

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

2.6 实施日期

如果不知道确切的年份，请说明大概的日期:

• 不到10年前（最近）

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

注释（项目类型等）:

From India.

3.1 该技术的主要目的

• 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

注释:

Major land use problems (compiler’s opinion): Serious wind erosion damages crops and cultivated land along the seashore.

Major land use problems (land users’ perception): Crops were often damaged and crop yield is decreasing gradually.

Type of cropping system and major crops comments: Rice-peanut-sweat potato etc.

3.3 有关土地利用的更多信息

该技术所应用土地的供水:

• 雨养

注释:

Water supply also full irrigation

每年的生长季节数:

• 1

具体说明:

Longest growing period in days: 365Longest growing period from month to month: Jan - Dec

3.4 该技术所属的SLM组

• 地表水管理（泉、河、湖、海）

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 0.5 m2.

The SWC area is about 0.5 sqkm.

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: Et: loss of topsoil

Secondary types of degradation addressed: Cn: fertility decline and reduced organic matter content, Ha: aridification

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: moderate

Main technical functions: Wind-break

Secondary technical functions: improvement of ground cover, increase in organic matter, increase of infiltration, increase / maintain water stored in soil, water harvesting / increase water supply, Increase in soil fertility

Mulching
Material/ species: Vetiver
Quantity/ density: 10000
Remarks: alignment

Grass species: Vetiver

Slope (which determines the spacing indicated above): 30.00%

If the original slope has changed as a result of the Technology, the slope today is (see figure below): 20.00%

Gradient along the rows / strips: 50.00%

4.3 有关投入和成本计算的一般信息

具体说明成本计算所用货币:

• 美元

注明美元与当地货币的汇率(如相关):1美元=:

8.3

4.4 技术建立活动

	活动	措施类型	时间
1.	treating material	植物性的	mid-March
2.	soil preparation	植物性的	early March
3.	planting	植物性的	mid-March
4.	water	植物性的	planting day

4.5 技术建立所需要的费用和投入

注释:

Duration of establishment phase: 24 month(s)

4.6 维护/经常性活动

	活动	措施类型	时间/频率
1.	pruning	植物性的	mid-May /
2.	pruning	植物性的	early June /
3.	applying fertilizer	植物性的	later May /

4.7 维护/经常性活动所需要的费用和投入（每年）

注释:

Areas of vetiver cover.

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:

seeds and labor.

5.1 气候

5.2 地形

说明该技术是否专门应用于:

• 不相关

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 fertility: very low

Soil drainage / infiltration: good

Soil water storage capacity: very low

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: 200-500 persons/km2

Annual population growth: < 0.5%

30% of the land users are average wealthy and own 20% of the land.

Off-farm income specification: This is an experimental project with small area so that not many persons involved in it.

5.8 土地所有权、土地使用权和水使用权

土地所有权:

• 社区/村庄
• 个人，有命名

6.1 该技术的现场影响

生态影响

水循环/径流

土壤

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

• 大于 50%

如若可行，进行量化（住户数量和/或覆盖面积）:

100 households and 100% of the 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？:

• 50-90%

注释:

50% of land user families have adopted the Technology with external material support

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

Comments on acceptance with external material support: estimates

50% of land user families have adopted the Technology without any external material support

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

Comments on spontaneous adoption: estimates

There is a moderate trend towards spontaneous adoption of the Technology

Comments on adoption trend: Climate here is quite suitable for vetiver growing and it is easy to plant with low input and high output.