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）

有助于对技术进行记录/评估的机构名称（如相关）

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。:

是

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？:

否

2.1 技术简介

技术定义:

Citrus canopy management refers to the set of practices and techniques employed to optimize the growth, health, and productivity of citrus trees by manipulating the structure and density of their canopy. Effective canopy management is crucial for achieving desirable outcomes in citrus cultivation, such as improved fruit quality, increased yields, efficient use of resources, and enhanced tree health.

2.2 技术的详细说明

说明:

Citrus canopy management practices remain basic in Bhutan. Thus, the Australian Centre for International Agricultural Research (ACIAR) project was initiated and demonstrated citrus canopy management practices in selected orchards in 2010. In the same year, the Japan International Cooperation Agency (JICA) project trained land users and extension officers in eastern Bhutan on citrus management practices such as planting methods, nutrient management, pruning and training including top working, fruit thinning and post-harvest management practices. Since then, citrus growers have been slowly adopting the practices in their orchards. However, the adoption rate is low - affecting the yield and quality.
Bhutan has suitable climatic conditions for citrus production, particularly in the southern parts of the country due to the subtropical climate. Citrus such as oranges, mandarins and lemons are grown in orchards and home gardens. In Bhutan, citrus canopy management practices focus on optimizing tree growth, fruit production, and overall tree health. The main elements include pruning, training systems, canopy density management, tree height and size control, and disease and pest management integrated with irrigation and nutrient management practices. Pruning involves selectively removing branches, shoots, or foliage to shape the tree and improve its health. The stump should always be cut as close to the collar region as possible. Training structures the tree in a specific manner to optimize growth and management. Canopy density management regulates foliage density for light penetration and airflow. Techniques such as hedging or topping control the height and size of trees. Disease and pest management practices include adequate air circulation and sunlight exposure. Integration with irrigation and soil nutrient management enhances tree health and productivity. The desirable shape and size of citrus are variable depending on the grower's choice, location, and - most importantly - operational health and safety concerns. In general, the desirable shape and size of the tree should be 2 to 5 m tall, 2 to 5 m width of canopy, and 4 to 6 primary (scaffold) branches that are at least 1 m above the ground level.
The purposes/functions of citrus canopy management technology are to optimize fruit production, improve tree health, and facilitate harvest and maintenance operations. It helps maximize fruit yield and quality. Pruning and maintenance practices enhance tree vigour, reduce the risk of diseases and pests, and improve overall plant health. Controlling tree size and shape makes harvesting easier and more efficient, and simplifies other maintenance activities such as irrigation, fertilization, and pest control.
To establish and maintain citrus canopy management technology, activities such as regular pruning and training, knowledge and skill development, use of proper tools and equipment, monitoring and assessment, irrigation, and nutrition management are required. Regular pruning and training of citrus trees according to the selected system and management objectives is essential. Monitoring tree growth, health, and productivity is important, along with proper irrigation scheduling, water management, and nutrient application.
The benefits/impacts of the technology are improved sunlight exposure, enhanced air circulation, reduced disease incidence, increased fruit size and quality, ease of harvest, consistent yield, optimized water use, better pest management, and others. A well-managed canopy makes it easier to access the fruit during harvest, and achieve higher yields and better-quality fruits, reduced need for pesticides, as well as directing nutrients toward fruit production rather than excessive vegetative growth. However, there are some drawbacks of the technology such as the requirement for time-consuming manual labour, lower initial yields, high initial investments for equipment, and concerns about over-pruning.

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:

不丹

区域/州/省:

Dagana Dzongkhag

有关地点的进一步说明:

Nindukha Village, Kana Gewog

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 平方千米（10 公顷）

技术现场是否位于永久保护区？:

否

Map

×

2.6 实施日期

注明实施年份:

2019

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
• 适应气候变化/极端天气及其影响
• 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

同一土地单元内混合使用的土地：:

否

农田

• 乔木与灌木的种植

乔木和灌木种植 - 指定作物:

• 柑橘属

每年的生长季节数:

• 1

采用间作制度了吗？:

否

采用轮作制度了吗？:

否

3.3 由于技术的实施，土地使用是否发生了变化？

由于技术的实施，土地使用是否发生了变化？:

• 否（继续问题3.4）

3.4 供水

该技术所应用土地的供水:

• 混合雨水灌溉

3.5 该技术所属的SLM组

• 土壤肥力综合管理
• 灌溉管理（包括供水、排水）

• Tree canopy management

3.6 包含该技术的可持续土地管理措施

植物措施

• V5：其它

其它措施

具体说明:

Improve/optimize fruit production and quality by manipulating the growth and structure of trees.

3.7 该技术强调的主要土地退化类型

生物性退化

• Bc：植被覆盖的减少

注释:

Citrus canopy management increases productivity and reduces its susceptibility to diseases which ensures vegetation cover as the trees are not removed.

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

4.1 该技术的技术图纸

技术规范（与技术图纸相关）:

The spacing between trees is 6 m. There are a total of 100 trees per acre. Diseased or damaged trees are removed.

作者:

Thinley Penjor Dorji

日期:

22/08/2023

4.2 有关投入和成本计算的一般信息

具体说明成本和投入是如何计算的:

• 每个技术区域

其它/国家货币（具体说明）:

Ngultrum (Nu.)

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=:

80.0

4.3 技术建立活动

4.4 技术建立所需要的费用和投入

如果土地使用者负担的费用少于100%，请注明由谁负担其余费用:

The cost for sapling and biocide is borne by the Royal Government of Bhutan.

注释:

The total establishment cost of the technology for one hectare is USD 644.38. The Land users paid 100% of the equipment's cost. They follow a labour-sharing system whereby the labour employed in the farm is compensated by working in their fields and there is no cost involved.

4.5 维护/经常性活动

4.6 维护/经常性活动所需要的费用和投入（每年）

注释:

Only labour input is needed for maintenance/recurrent activities but the cost is zero as land users follow labour-sharing system.

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 land users mentioned that the equipment is the main factor affecting cost.

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。:

Moisture content 2.88%, organic matter 6.17%, Organic carbon 3.59%, pH 6.23, electrical conductivity 178.27 µs/cm, nitrogen 0.18%, phosphorus 0.57 ppm, Potassium 134.73 mg/100ml, texture sand clay loam.
The soil analysis was conducted at the Science Laboratory of College of Natural Resources, Royal University of Bhutan, Lobesa, Punakha.

5.4 水资源可用性和质量

水的盐度有问题吗？:

否

该区域正在发生洪水吗？:

否

5.5 生物多样性

关于生物多样性的注释和进一步规范:

The species and habitat diversity provided above are for the citrus orchard.

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使用的平均土地面积

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

用水权:

• 社区（有组织）

土地使用权是否基于传统的法律制度？:

是

具体说明:

The land use rights in Bhutan is traditional legal system guided by formal land act and land rules and regulations.

5.9 进入服务和基础设施的通道

6.1 该技术的现场影响

社会经济效应

生产

收入和成本

社会文化影响

生态影响

生物多样性:植被、动物

6.2 该技术的场外影响已经显现

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

气候有关的极端情况（灾害）

气象灾害

生物灾害

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

• 11-50%

如若可行，进行量化（住户数量和/或覆盖面积）:

7 households adopted the technology from the total of 50 households.

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？:

• 0-10%

注释:

All the farmers received material incentives from the government.

6.6 适应

最近是否对该技术进行了修改以适应不断变化的条件？:

否

6.7 该技术的优点/长处/机会

6.8 技术的弱点/缺点/风险及其克服方法

7.1 信息的方法/来源

7.3 链接到网络上的相关信息

标题/说明:

Canopy Management Guide for Citrus Mandarin in Bhutan

URL:

http://rcbajo.gov.bt/wp-content/uploads/2020/05/Canopy-management-guide-for-citrus-mandarin.pdf

标题/说明:

Pruning and Training - Evergreen Trees

URL:

http://rcbajo.gov.bt/wp-content/uploads/2020/06/Pruning-Training-evergreen.pdf