技术

Contour bund combined with lemon grass, pineaples. grass mulch and manure in banana beans intercrop production. [坦桑尼亚联合共和国]

Fanya juu, fanya chini yenye michaichai, nanasi juu ya tuta. katika shamba la migomba.

technologies_1200 - 坦桑尼亚联合共和国

完整性: 80%

1. 一般信息

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

关键资源人

SLM专业人员:
SLM专业人员:
SLM专业人员:

Nkuba Julitha

Bukoba District Council

坦桑尼亚联合共和国

有助于对技术进行记录/评估的机构名称(如相关)
Bukoba district council (Bukoba district council) - 坦桑尼亚联合共和国
有助于对技术进行记录/评估的机构名称(如相关)
Missenyi District Council (Missenyi District Council) - 坦桑尼亚联合共和国

1.3 关于使用通过WOCAT记录的数据的条件

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。:

1.4 所述技术的可持续性声明

这里所描述的技术在土地退化方面是否存在问题,导致无法被认为是一种可持续的土地管理技术?:

2. SLM技术的说明

2.1 技术简介

技术定义:

Is the excavation of a furrow along the contour line, soil embankment on either side, planting lemon grass alternating with pineapples along the bund combined with application of grass mulch, Farm Yard Manure in banana bean inter-crop production.

2.2 技术的详细说明

说明:

Contour band combined with lemon grass, pineapples, Hyperrhamia rufa mulch and manure technology in the banana production is the excavation of a 60cm deep by 60cm wide furrow and formation of soil embankment on upper side (at smaller slope) and lower side (at the greater slope) of the furrow to improve soil water infiltration; then planting on it with lemon grass and pineapples to stabilize soil embankment combined with spreading of a 15cm thickness grass mulch across the slope while 36kg of farm yard manure applied in a furrow measured 30cm deep by 60cm wide facing the grand daughter banana sucker at the distance of 60cm from the stool. Trushline is applied to complement grass mulch while lemon grass and pineapples are harvested routinely for sale.The technology is applied on perennial cropland characterised with sub humid in tropical climatic zone. The main biophysical features are gentle slope, clay loam soil with shallow depth. The technology done manually using hand hoes to cultivate land in a mixed (subsistence and commercial) production mode. To implement the technology, it costs US$ 220.00 for establishment and US$ 2,222.65 for maintenance costs. The technology was introduced in late 2012 by TAMP –Kagera using FFS methodology.

Purpose of the Technology: The major purpose of the technology is prevented land degradation in 50 ha while increased 10% of crop and livestock production to contribute on food security and improve livelihood with sustainable land management. This purpose should be achieved by performing the following main technical functions: control
of dispersed runoff, increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration and increase / maintain water stored in soil.

Establishment / maintenance activities and inputs: The establishment activities includes:-First is identification and demarcation of contour lines done manually using the A-frame simple made tool, the activity normally done in May. Second is construction of contour bund along the identified and demarcated contour done manually using cheasle hand hoes, fork hand hoes, spades and mattock, this is done in early June. Third is Planting lemon grass and pineapples along the contour bund done manually by spacing 30cm plant to plant (grass lemon) while pineapples are planted at 5m alternating with lemon grass; this is done in early September.
The maintenance activities included:- First is farm weeding done manually using a simple made weeding tool (kahosho); this is done twice (January and June to August). Second is Farm yard manures application done manually using baskets, spades and fork hand hoes; this is done in July. Third is grass mulch application done manually by spreading dry Hyperrhamia rufa across the slope with a thickness of 15cm to cover space between the bunds planted with bananas; this is done in late September. Fourth is desukering and detrushing of banana stools done manually using machete, local made tools (kihosho and rwabyo); this is done twice (early March and early October). Then, harvesting bananas, lemon grass and pineapples according to market requirements. Last is furrow cleaning done manually by removing soil sediments and place them on the bund side using spades; this is done twice per year at the end of each rain seasons (May and December).

Natural / human environment: The contour bund embanked with lemon grass and pineapples technology is tolerant to seasonal rainfall decrease and droughts / dry spells. However the technology is sensitive to climatic seasonal rainfall increase, heavy rainfall events (intensities and amount). In case of climatic sensitivity, the technology should be modified with planting of perennial species having strong/ tough root system such as Pinesetum purperim and Vetiva spps to stabilize soil embankment. Furthermore the construction of spillways to drain-out the excess water and reseve them in the ditches to be used in the farms later. This technology is applied by Individual / household categorized as small scale common / average land users, with importance of men and women participating equally. The land is owned individually, not titled. The Water use rights is open access (unorganized). The relative level of wealth falls under three categories; the rich, which represents 4% of the land users; owning 32% of the total area; the average, which represents 64% of the land users owning 64% of the total area and the poor, which represents 32% of the land users owning 4% of the total area. Individuals who applied the technology should value the off-farm income as 10%. The market oriented is mixed (subsistence and commercial).

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

国家:

坦桑尼亚联合共和国

区域/州/省:

Kagera region

有关地点的进一步说明:

Bukoba Diatrict council

具体说明该技术的分布:
  • 均匀地分布在一个区域
如果不知道精确的区域,请注明大致覆盖的区域:
  • 0.1-1 平方千米
注释:

Catchment area composed of three sub villages with 917 house holds each farming in average crop land of 0.75ha. Out of these households 11 households participated in the FFS which introduced the technology while 23 households already adopted the technology to make the technology area of 34 X 0.75 = 25.5ha.

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):

In 2012 TAMP -Kagera in collaboration with Bukoba District council Identified the land degradation existing in the area. The cause of these problems were earmarked by interactive thems btm SLM specialist and communities. In particular Butulage community was recomended to aplly this technology and the implementation started in April 2012.

3. SLM技术的分类

3.1 该技术的主要目的

  • 改良生产
  • 减少、预防、恢复土地退化
  • 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

农田

农田

  • 一年一作
  • 多年一作(非木材)
  • 乔木与灌木的种植
年作 - 具体指明作物:
  • 谷物类 - 玉米
  • 豆科牧草和豆类 - 豆子
  • 根/块茎作物 - 红薯、山药、芋头/椰子,其他
  • 根/块茎作物 - 土豆
  • lemon grass
多年生(非木质)作物 - 指定作物:
  • 香蕉/芭蕉/蕉麻
  • 菠萝
乔木和灌木种植 - 指定作物:
  • 咖啡,露天种植
具体说明:

Longest growing period in days: 120, Longest growing period from month to month: September to December. Second longest growing period in days: 90 Second longest growing period from month to month: March to May

注释:

Major land use problems (compiler’s opinion): The major land use problems were soil erosion by water, low soil water infiltration, excessive soil nutrient mining and high loss of soil moisture.

Major land use problems (land users’ perception): The major land use problems were low productivity and BXW.

3.4 供水

该技术所应用土地的供水:
  • 雨养

3.5 该技术所属的SLM组

  • 农业林学
  • 改良的地面/植被覆盖
  • 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

农艺措施

农艺措施

  • A1:植被和土壤覆盖层
  • A2:有机质/土壤肥力
  • A7:其它
植物措施

植物措施

  • V5:其它
结构措施

结构措施

  • S2:堤、岸
  • S4:平沟、坑
注释:

Type of agronomic measures: better crop cover, mulching, manure / compost / residues
Type of vegetative measures: aligned: -graded strips

3.7 该技术强调的主要土地退化类型

土壤水蚀

土壤水蚀

  • Wt:表土流失/地表侵蚀
化学性土壤退化

化学性土壤退化

  • Cn:肥力下降和有机质含量下降(非侵蚀所致)
注释:

Main causes of degradation: soil management (Cultivation along footslpoes.), crop management (annual, perennial, tree/shrub) (Continous production of bananas without nutrient replacement.), droughts (The area experiences a long dry season of more than 6 months.), population pressure (Increased population presure on land forced cultivation in the area with long dry seasons.)

Secondary causes of degradation: poverty / wealth (Weath people keeps animals exeeding carrying capacity to graze on the hill and accelerates soil erosion by water down the footslope)

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:
  • 防止土地退化
  • 减少土地退化

4. 技术规范、实施活动、投入和成本

4.1 该技术的技术图纸

技术规范(与技术图纸相关):

Location: Kaleego sub village, Butulage village. Bukoba D.C, Kagera region, Tanzania

Technical knowledge required for field staff / advisors: low (Basic principles are taught at colleges.)
Technical knowledge required for land users: moderate (Application of tools to determine the slopes and construct appropriate bounds and ditches is a new concept.)

Main technical functions: control of dispersed runoff: retain / trap, increase in organic matter, increase in nutrient availability (supply, recycling,…), increase of infiltration, increase / maintain water stored in soil
Secondary technical functions: control of raindrop splash

Better crop cover
Material/ species: Beans
Quantity/ density: 0.025
Remarks: scatered in the space between bunds.

Mulching
Material/ species: Hyperrhamia spps, banana trushes and stems.
Quantity/ density: 1500M3
Remarks: spread acroos the slop, 15cm thickness between the bunds.

Manure / compost / residues
Material/ species: cow dung
Quantity/ density: 12tones
Remarks: Applied on the spot selectively.

Aligned: -graded strips
Vegetative material: C : perennial crops, G : grass
Number of plants per (ha): 3333X
Spacing between rows / strips / blocks (m): 8
Vertical interval within rows / strips / blocks (m): 0.05

Fruit trees / shrubs species: Pinapples

Grass species: lemon grass

Structural measure: contour band
Vertical interval between structures (m): 0.16
Spacing between structures (m): 8
Depth of ditches/pits/dams (m): 0.6
Width of ditches/pits/dams (m): 0.6
Length of ditches/pits/dams (m): 175
Height of bunds/banks/others (m): 0.6
Width of bunds/banks/others (m): 1
Length of bunds/banks/others (m): 175

Construction material (earth): Soils excavated from the leveled ditch.
Slope (which determines the spacing indicated above): 2%
Lateral gradient along the structure: 2%
Vegetation is used for stabilisation of structures.

作者:

Baraba Godfrey, Box 491, Bukoba.

日期:

27/05/2014

4.2 有关投入和成本计算的一般信息

其它/国家货币(具体说明):

Tanzanain shiling

如相关,注明美元与当地货币的汇率(例如1美元=79.9巴西雷亚尔):1美元=:

1700.0

注明雇用劳工的每日平均工资成本:

1.76

4.3 技术建立活动

活动 时间(季度)
1. To plant lemon grass seedlings march & september
2. To plant pineapples seedlings March & SEptember
3. To dermacate the level mark using a Frame. January and June
4. To dig and excavate soils from the ditch February and August
5. To spread the excavated soils along the ditch on the upper side. February and August
6. Purchase of hand hues
7. Purchase of machete
8. Purchase of kohosho
9. Purchase of sickles

4.4 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 1.0 258.76 258.76 100.0
设备 Tools ha 1.0 17.06 17.06 100.0
植物材料 Seedlings ha 1.0 263.63 263.63 100.0
肥料和杀菌剂 Compost/manure ha 1.0 864.35 864.35
技术建立所需总成本 1403.8
技术建立总成本,美元 0.83
注释:

Duration of establishment phase: 12 month(s)

4.5 维护/经常性活动

活动 时间/频率
1. To weed by hand with small kihosho Late Jan & July
2. To ditrush and desucker bananas with huge Kihosho Feb & August
3. To plant beans March & September
4. To spread mulch alternating with trashes between the bunds. late March and September
5. To apply manure selectively on the spoted banana stools february & August
6. To harvest and market lemon grass monthly
7. To harvest pineapples and market them. routrrnly
8. To remove sediments from the ditches atwice before rain season.

4.6 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 1.0 264.71 264.71 100.0
植物材料 seeds ha 1.0 117.65 117.65 100.0
其它 Hyperrhamia rufa ha 1.0 180.15 180.15
技术维护所需总成本 562.51
技术维护总成本,美元 0.33
注释:

The total length of the bund is 175m per hector, the banana stools to be applied manures are 1111 stool per hector.

4.7 影响成本的最重要因素

描述影响成本的最决定性因素:

The most determinate factor affecting the cost is Farm Yard manures US$ 441.18 which is the maintenance cost especially for soil nutrient maintenance.

5. 自然和人文环境

5.1 气候

年降雨量
  • < 250毫米
  • 251-500毫米
  • 501-750毫米
  • 751-1,000毫米
  • 1,001-1,500毫米
  • 1,501-2,000毫米
  • 2,001-3,000毫米
  • 3,001-4,000毫米
  • > 4,000毫米
有关降雨的规范/注释:

Long rains (September To December) and short rains (March t0 May). Dry periods is 155 days. Length of growing period is 210 days.

农业气候带
  • 半湿润

Thermal climate class: tropics. The average temperature is 18°C.

5.2 地形

平均坡度:
  • 水平(0-2%)
  • 缓降(3-5%)
  • 平缓(6-10%)
  • 滚坡(11-15%)
  • 崎岖(16-30%)
  • 陡峭(31-60%)
  • 非常陡峭(>60%)
地形:
  • 高原/平原
  • 山脊
  • 山坡
  • 山地斜坡
  • 麓坡
  • 谷底
垂直分布带:
  • 0-100 m a.s.l.
  • 101-500 m a.s.l.
  • 501-1,000 m a.s.l.
  • 1,001-1,500 m a.s.l.
  • 1,501-2,000 m a.s.l.
  • 2,001-2,500 m a.s.l.
  • 2,501-3,000 m a.s.l.
  • 3,001-4,000 m a.s.l.
  • > 4,000 m a.s.l.
说明该技术是否专门应用于:
  • 凸形情况
关于地形的注释和进一步规范:

Altitudinal zone: 1501-2000 m a.s.l. (ranked 1, the Karagwe -Ankolean mountaions) and 1001-1500 m a.s.l. (ranked 2, foot valley along lake Ikimba)
Slopes on average: Getnle (ranked 1) and flat (ranked 2, some of the fields the between space find to be more 8m)

5.3 土壤

平均土层深度:
  • 非常浅(0-20厘米)
  • 浅(21-50厘米)
  • 中等深度(51-80厘米)
  • 深(81-120厘米)
  • 非常深(> 120厘米)
土壤质地(表土):
  • 中粒(壤土、粉土)
  • 细粒/重质(粘土)
表土有机质:
  • 中(1-3%)
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: Deep ( Burreal premises found in the fields claimed to be more than 100cm before reaching the rocks or gravels)
Soil texture: Medium (ranked 1) and fine/heavy (part along the lake Ikimba shores is typical loam soils)
Soil fertility: Low (The farms have been established more than fifty years ago, while banana productivity declining continously)
Topsoil organic matter: Medium (Soil colour is a bit black)
Soil drainage/infiltration: Medium (ranked 1) and poor (ranked 2)
Soil water storage capacity: Medium

5.4 水资源可用性和质量

地下水位表:

5-50米

地表水的可用性:

中等

水质(未处理):

不良饮用水(需要处理)

关于水质和水量的注释和进一步规范:

Ground water table: 5-50m (three shallow wells fond in the area)
Availability of surface water: Medium (Entire north border of the catchment laid on Lake Ikimba)

5.5 生物多样性

物种多样性:
  • 中等
关于生物多样性的注释和进一步规范:

Earth worms, butterflies, black ants and ari spaces easily found in the catchment.

5.6 应用该技术的土地使用者的特征

生产系统的市场定位:
  • 混合(生计/商业)
非农收入:
  • 低于全部收入的10%
个人或集体:
  • 个人/家庭
机械化水平:
  • 手工作业
性别:
  • 女人
  • 男人
说明土地使用者的其他有关特征:

Land users applying the Technology are mainly common / average land users
Relative level of wealth: rich, average, poor
4% of the land users are rich and own 32% of the land.
64% of the land users are average wealthy and own 64% of the land.
32% of the land users are poor and own 4% of the land.

Off-farm income specification: The off-farm income for the land user who applied the technology is less than 10%. This is because applying the technology has opportunity cost (in terms of materials and time) of absconding from investment and maintenance in off-farm activities.

Market orientation: Mixed (the banana production diveded into commecial banana for local brewing and indigenous varieties for food purposes)
Level of mechanization: Manual work (hand hoes used during establishment and maintanace of anual croping, while simple hand tools used to mantain perianeal croping)

5.7 应用该技术的土地使用者使用的平均土地面积

  • < 0.5 公顷
  • 0.5-1 公顷
  • 1-2 公顷
  • 2-5公顷
  • 5-15公顷
  • 15-50公顷
  • 50-100公顷
  • 100-500公顷
  • 500-1,000公顷
  • 1,000-10,000公顷
  • > 10,000公顷
这被认为是小规模、中规模还是大规模的(参照当地实际情况)?:
  • 小规模的
注释:

Average area of land owned or leased by land users applying the Technology:
< 0.5 ha: Poor land users
0.5-1 ha: Average households farm size.
1-2 ha: Ricland users

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,未命名
土地使用权:
  • 社区(有组织)
  • 个人
用水权:
  • 自由进入(无组织)

5.9 进入服务和基础设施的通道

健康:
  • 贫瘠
  • 适度的
教育:
  • 贫瘠
  • 适度的
技术援助:
  • 贫瘠
  • 适度的
就业(例如非农):
  • 贫瘠
  • 适度的
市场:
  • 贫瘠
  • 适度的
能源:
  • 贫瘠
  • 适度的
道路和交通:
  • 贫瘠
  • 适度的
饮用水和卫生设施:
  • 贫瘠
  • 适度的
金融服务:
  • 贫瘠
  • 适度的

6. 影响和结论性说明

6.1 该技术的现场影响

社会经济效应

生产

作物生产

降低
增加
注释/具体说明:

banana bunch from 25 to 35kgs, beans from 0kg to ..., lemon grass from 0kg to ...kg and pineaples from 0 to ..kg

生产故障风险

增加
降低
收入和成本

农业投入费用

增加
降低
SLM之前的数量:

1

SLM之后的数量:

2

注释/具体说明:

cost of grass mulch, manures, pineaples and lemon grasses

农业收入

降低
增加
注释/具体说明:

sales of suplimentary products (lemon grass and pineaples)

工作量

增加
降低
SLM之前的数量:

1

SLM之后的数量:

2

注释/具体说明:

Reduced weeding frequency from two to once. Youth and woman labour shift to hired labourers for grass mulch.

社会文化影响

食品安全/自给自足

减少
改良
SLM之前的数量:

0

SLM之后的数量:

23 HH

注释/具体说明:

Sales of lemon and pineaples should ensure purchasing power of food out of the farms.

SLM/土地退化知识

减少
改良
SLM之前的数量:

0

SLM之后的数量:

13 members

注释/具体说明:

The ditches trape water and enhance infiltration, the bunds alignments practices .

Improved livelihoods and human well-being

decreased
improved
注释/具体说明:

Farmers applying the technology experienced production increase consequently increased income. The increased income should be spent on school fees and health costs. The community as a whole did achieved food security in the sense that, they can enjoy employment opportunities in the farms required to collect grass mulch for food payments from their neighbors.

生态影响

水循环/径流

地表径流

增加
降低
SLM之前的数量:

0

SLM之后的数量:

1

注释/具体说明:

Building bunds catches the sedments to level the surface and consecuntly spread the water instead of down sloping.

蒸发

增加
降低
SLM之前的数量:

0

SLM之后的数量:

2

注释/具体说明:

Mulch grasses should imped sun rays as well as retarding evaporation from the soils.

土壤

土壤水分

降低
增加
SLM之前的数量:

0

SLM之后的数量:

1

注释/具体说明:

Mulching should minimise the sunlight energy as well as poor conduction of heat to reach the soil surface.

土壤覆盖层

减少
改良
SLM之前的数量:

0

SLM之后的数量:

1

注释/具体说明:

Mulsh grasses impends the sun rays intensit and rain drops.

土壤流失

增加
降低
SLM之前的数量:

0

SLM之后的数量:

1

注释/具体说明:

Erosions formelly transfered soils from uper oints to lower points.

养分循环/补给

降低
增加
SLM之前的数量:

0

SLM之后的数量:

2

注释/具体说明:

Manure aplication increased nitrogen into the soils.

土壤有机物/地下C

降低
增加
SLM之前的数量:

0

SLM之后的数量:

2

注释/具体说明:

Decayed grass mulch, banana trushes and othe farm residues.

6.2 该技术的场外影响已经显现

对公共/私人基础设施的破坏

增加
减少
SLM之前的数量:

0

SLM之后的数量:

1

注释/具体说明:

Runoff from uphill field

6.3 技术对渐变气候以及与气候相关的极端情况/灾害的暴露和敏感性(土地使用者认为的极端情况/灾害)

渐变气候

渐变气候
季节 增加或减少 该技术是如何应对的?
年温度 增加 未知

气候有关的极端情况(灾害)

气象灾害
该技术是如何应对的?
局地暴雨 不好
气候灾害
该技术是如何应对的?
干旱
水文灾害
该技术是如何应对的?
比较和缓的(河道)洪水 未知
注释:

The technology is tolerant to seasonal rainfall decrease, droughts / dry spells while is sensitive to seasonal rainfall increase, heavy rainfall events (intensities and amount). In case of sensitive the planting Guatamala grass is the best modification to ensure more stability and can be use as mulch grass to reduce the costs of Hyperrhamia rufa.

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)?
短期回报:

消极

长期回报:

稍微积极

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)?
短期回报:

非常消极

长期回报:

稍微积极

注释:

The short term returns (annual farm income) is slightly negative compared with establishment costs; while the long term returns (cumulated increments) is difficult to comment at this (juvenile) stage. The short term return compared with maintenance costs is positive; while the long term return is still early to give any comments.

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):

36 households and 100% of the area covered

在所有采用这项技术的人当中,有多少人是自发的,即未获得任何物质奖励/付款?:
  • 91-100%
注释:

9% of land user families have adopted the Technology with external material support
33 land user families have adopted the Technology with external material support
Comments on acceptance with external material support: 3 host farmers of FFS were provided with inputs to be applied for technology implementation in three sites with average of 0.2ha.

91% of land user families have adopted the Technology without any external material support
33 land user families have adopted the Technology without any external material support
Comments on spontaneous adoption: 30 House holds applied the technology in their own farms either participating in FFS or seen it in their neighbors' fields.

There is a moderate trend towards spontaneous adoption of the Technology
Comments on adoption trend: There is a trend towards spontaneous adoption simply because in a two year period, twicw as much adopters are encouraging.

6.7 该技术的优点/长处/机会

土地使用者眼中的长处/优势/机会
Efficient use of rain water in crop land production.
Reduced workload for farm maintenance especially weeding and general farm cleanliness.
Increased crop productivity to ensure food security and general livelihoods.
Easy and low cost of establishment, especially use of soils as readily available materials.
编制者或其他关键资源人员认为的长处/优势/机会
Availability of grass mulch in the communal lands.
Efficient utilization of land, especially planting lemon grass and pineaple are of multipurpose. e.i soil stabilization and commecial produce.
Low establishment costs i.e. US$ 187 mainly as medium labor costs to excavate the furrow manually, which can be affordable to average farmers using household members.

6.8 技术的弱点/缺点/风险及其克服方法

土地使用者认为的弱点/缺点/风险 如何克服它们?
Still BXW can infest well nourished and cleaned banana in the farms were technology is applied. To abide on the cardinal rules of BXW contol.
High costs of manures.
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?
The technology can be applied on the flat to genlte slope, otherwise stones and other materials should be applied to strengthen the band. Use materials with tough roots such as vetiva grass and elephant grass to stabilize soil embankments.
The agronomic costs has high costs especially soil nutrient which requires manures. More emphasis on vegetative soil cover plants, especially leguminous plants with ability to fix nitrogen while trash-lines should increase biomass and contribute to organic matters.
It is not worth to reduces soil erosion when you think of mulch grass costs i.e. US$ 441.18 per hector. Use better crop cover such as muccuna spps

7. 参考和链接

7.1 信息的方法/来源

  • 实地考察、实地调查
  • 与土地使用者的访谈
(现场)数据是什么时候汇编的?:

27/05/2014

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