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Palm oil cluster resilience to enhance indigenous welfare by innovative ability to address land conflicts: Evidence of disaster hierarchy 棕榈油集群恢复力通过解决土地冲突的创新能力来提高土著福利:灾害等级的证据
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0206
H. Herdiansyah, Randi Mamola, R. Rokhim
Abstract Recently, capacity building has been named the government’s target in evaluating strengthening land function cycle collaboration in reducing disaster conflicts due to palm oil expansion. Disaster conflicts over palm oil plantations are the main cause of the fundamental transition of environmental culture and customs, especially concerning the welfare capacity of indigenous people in Jambi Province, Indonesia. This article aims to combine information on decision hierarchies and Geographical Information System (GIS) imaging applications to assess complaints of disaster risk in the development of palm oil clusters on indigenous welfare factors due to the palm oil boom in eight Rokan hamlets, Jambi. The combination of the Analytical Hierarchy Process simulation and GIS method in the GeoDa density test is used synergistically to analyze the following criteria for disaster causes: land disputes, water pollution, habitat scarcity, drought/forest fires, floods, and crop failure. The results of the disaster hierarchy show that the priority criteria are land disputes followed by drought/forest fires and floods. Meanwhile, the answer to alternative stakeholder decisions is the regional government according to predictions from the findings of the frequency of resolution of conflicts that have occurred in the past. In addition, the GIS density results detected six Rokan hamlets in Jambi having very high and high conflicts, but two hamlets had no disaster conflict incidents. A capacity building approach in the social, economic, and environmental fields is one of the solutions in minimizing land conflicts caused by palm oil expansion.
最近,在评估加强土地功能循环协作以减少棕榈油扩张引发的灾害冲突时,能力建设被列为政府的目标。棕榈油种植园的灾害冲突是环境文化和习俗发生根本性转变的主要原因,特别是涉及到印度尼西亚占比省土著人民的福利能力。本文旨在结合决策层次和地理信息系统(GIS)成像应用的信息,评估棕榈油集群发展中对土著福利因素的灾害风险投诉,这是由于占比的八个Rokan村庄的棕榈油繁荣。在GeoDa密度测试中,将层次分析法模拟与GIS方法相结合,协同分析以下灾害原因标准:土地纠纷、水污染、栖息地稀缺、干旱/森林火灾、洪水和作物歉收。灾害等级的结果表明,优先级标准是土地纠纷,其次是干旱/森林火灾和洪水。与此同时,根据对过去发生的冲突解决频率的研究结果的预测,替代利益相关者决策的答案是地区政府。此外,GIS密度结果发现占比的6个罗坎村存在非常高和高度冲突,但2个村庄没有发生灾害冲突事件。在社会、经济和环境领域进行能力建设是减少棕榈油扩张引起的土地冲突的解决方案之一。
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引用次数: 1
Prioritizing IoT adoption strategies in millennial farming: An analytical network process approach 在千禧一代农业中优先考虑物联网采用策略:一种分析网络过程方法
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0179
K. Kusnandar, M. Harisudin, E. W. Riptanti, I. Khomah, N. Setyowati, R. A. Qonita
Abstract This research aimed to formulate priority strategies for adopting Internet of Things (IoT)-based innovation by millennial farmers in Central Java Province, Indonesia. This research uses quantitative methods. The two stages involved were exploring external factors using a political, economic, social, and technological approach and internal factors using the resource-based view approach including human resources, physical resources, and organizational resources. Interviews were conducted with 120 millennial farmers in ten regions of Central Java. This led to the formulation of alternative adoption strategies. Furthermore, the second stage was formulating strategic priorities using the analytical network process approach, involving purposively selected experts from policymakers in the government. According to the research, the most considered factors for IoT adoption strategies were relative advantage, social influence, and technology anxiety. In the relative advantage, the most prioritized sub-factor was business profit. The most prioritized technology anxiety sub-factor cluster was unfamiliar with using IoT. The most prioritized social influence sub-factor cluster was a personal relationship. The resulting strategic priorities were strengthening openness to change, IoT education to millennial farmers, optimizing the role of institutions, and socializing the benefits of IoT to millennial farmers. Openness to change motivates millennial farmers to achieve continuous and better innovation. Millennial farmers need to be prepared for the new experiences to come. Government support through education, intensive mentoring, and increasing the active role of farmer mentoring institutions accelerates the adoption of IoT by millennial farmers.
摘要本研究旨在制定印尼中爪哇省千禧一代农民采用基于物联网(IoT)的创新的优先战略。本研究采用定量方法。所涉及的两个阶段是使用政治、经济、社会和技术方法探索外部因素,以及使用基于资源的观点方法探索内部因素,包括人力资源、物质资源和组织资源。对中爪哇十个地区的120名千禧一代农民进行了采访。这导致制定了替代收养战略。此外,第二阶段是利用分析网络过程方法制定战略优先事项,有针对性地从政府决策者中挑选专家。根据研究,物联网采用策略最受考虑的因素是相对优势、社会影响和技术焦虑。在相对优势中,最优先考虑的子因素是商业利润。最优先考虑的技术焦虑子因素集群不熟悉使用物联网。最优先考虑的社会影响子因素集群是个人关系。由此产生的战略优先事项是加强对变革的开放性,对千禧一代农民进行物联网教育,优化机构的作用,并将物联网的好处社会化给千禧一代的农民。对变革的开放性促使千禧一代农民实现持续和更好的创新。千禧一代的农民需要为即将到来的新体验做好准备。政府通过教育、强化辅导和加强农民辅导机构的积极作用提供支持,加速了千禧一代农民对物联网的采用。
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引用次数: 0
Responses of broiler chickens to incremental levels of water deprivation: Growth performance, carcass characteristics, and relative organ weights 肉鸡对逐渐缺水水平的反应:生长性能、胴体特性和相对器官重量
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0184
Amirah Mhmoud, M. V. Mkwanazi, S. Z. Ndlela, M. Moyo, Michael Chimonyo
Abstract The objective of the study was to assess the effect of varying levels of water deprivation on growth performance, carcass characteristics, and internal organ weight of broiler chickens. Ninety unsexed Ross 308 chicks 2 weeks old were randomly assigned to five water deprivation periods of 0, 6, 12, 18, and 24 h. Each treatment was replicated three times with six birds per replicate. Broiler chickens were given water ad libitum (0 h) or for 30 min at 6-, 12-, 18-, and 24-h intervals. Average daily feed intake (ADFI), average daily gain (ADG), and feed conversion ratio (FCR) were determined on a weekly basis. A negative linear relationship (P < 0.05) existed between water deprivation and ADFI. The increase in water deprivation level resulted in ADFI decreasing at an increasing rate. The R 2 value was 0.94. There was no relationship between water deprivation on ADG and FCR (P > 0.05). There was a quadratic relationship between water deprivation and cold dress mass (CDM) and warm dress mass. As the level of water deprivation increased, there were linear increases in relative weight of gizzard, spleen, heart, lungs, liver, and gastrointestinal tract (P < 0.001). The organ weights of the broiler chickens revealed the ability of birds to withstand of up to 24 h. Using differential of quadratic equations, the maximum time of water deprivation that did not negatively affect CDM was estimated to be 4 h.
摘要本研究的目的是评估不同程度的水分剥夺对肉鸡生长性能、胴体特性和内脏重量的影响。90只2周大的未交配Ross 308雏鸡被随机分配到5个缺水期,即0、6、12、18和24 h.每个处理重复三次,每次重复六只鸟。肉鸡随意饮水(0 h) 或30 以6、12、18和24小时为一次。每周测定平均日采食量(ADFI)、平均日增重(ADG)和饲料转化率(FCR)。缺水与ADFI呈负相关(P<0.05)。缺水水平的增加导致ADFI以增加的速度下降。R2值为0.94。水分剥夺对ADG和FCR的影响无统计学意义(P>0.05),水分剥夺与冷量和暖量呈二次关系,随着水分剥夺程度的增加,肉鸡的器官重量显示其耐受能力高达24小时。使用二次方程的微分方程,估计对CDM没有负面影响的最长缺水时间为4小时 h。
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引用次数: 0
Assessment of bread wheat (Triticum aestivum L.) seed quality accessed through different seed sources in northwest Ethiopia 埃塞俄比亚西北部不同来源面包小麦种子质量评价
Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0190
Yekoye Abebaw Yitayew, Dawit Tsegaye Sisay, Dereje Ayalew
Abstract Farmers are accessing seeds from different sources with different quality standards. Studies on the assessment of seed systems (sources) in relation to seed quality are scarce. This study was carried out to assess the different seed qualities (physical purity, physiological quality, and seed health) of bread wheat seed accessed through the existing seed sources (formal and informal seed sources) in Baso Liben district of the Amhara region, northwest Ethiopia. In addition, this study assessed the experience of farmers in seed production and management. Data were collected from 108 respondents using a semi-structured questionnaire and from farmers and local experts using focus group discussions. Seed samples were collected from 58 farmers (30 farmers who sourced seed from the informal system and 28 from the formal system) for laboratory testing. Data were analyzed using descriptive statistics and t -test (pairwise comparison) using SPSS v23.0. Results showed that about 32.4% of the respondents have experience in quality bread wheat seed production under contractual seed production arrangements with public seed enterprises. Results also revealed significant differences between formal and informal seed sources for various seed quality parameters. Seeds accessed from the formal sources have better physical purity, physiological quality, and 1,000 seed weight than seeds accessed from informal sources. Seed samples collected from the informal source were highly infected with Aspergillus flavus , Aspergillus niger , Chaetomium spp., and Fusarium spp., and seeds from the formal seed source were infected with Alternata spp. and Penicillium spp. Seed quality is a major concern for the seeds accessed from both formal and informal sources. Therefore, the seed quality control mechanisms of various stakeholders, including national and regional seed regulatory bodies, government organizations, research institutes, and seed producers/companies, should be given much attention at each stage of the seed value chain.
农民获取的种子来源不同,质量标准也不同。与种子质量有关的种子系统(来源)评价研究很少。本研究旨在评估通过埃塞俄比亚西北部阿姆哈拉地区Baso Liben地区现有种子来源(正式和非正式种子来源)获得的面包小麦种子的不同种子品质(物理纯度、生理品质和种子健康)。此外,本研究还评估了农民在种子生产和管理方面的经验。通过半结构化问卷从108名受访者中收集数据,并通过焦点小组讨论从农民和当地专家中收集数据。从58名农民(30名农民从非正式系统采购种子,28名农民从正式系统采购种子)收集种子样本进行实验室检测。使用SPSS v23.0软件对数据进行描述性统计和t检验(两两比较)。结果表明,约32.4%的受访者在与公共种子企业的合同种子生产安排下有优质面包小麦种子生产经验。结果还显示,正规和非正规种子来源在各种种子质量参数上存在显著差异。正规渠道获得的种子比非正规渠道获得的种子具有更好的物理纯度、生理品质和1000粒重。从非正式来源收集的种子样品高度感染了黄曲霉、黑曲霉、毛菌和镰刀菌,而从正式种子来源收集的种子样品感染了Alternata spp和青霉菌spp.种子质量是从正式和非正式来源获取的种子的主要问题。因此,包括国家和地区种子监管机构、政府组织、研究机构和种子生产商/公司在内的各利益相关者的种子质量控制机制应在种子价值链的每个阶段得到高度重视。
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引用次数: 0
Phenotypic characterisation of indigenous chicken in the central zone of Tanzania 坦桑尼亚中部地区土鸡的表型特征
Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0218
Edward Moto, Chrispinus D. K. Rubanza
Abstract The study was conducted to assess the phenotypic diversity within the indigenous chicken population in Tanzania, the central zone, preciously Dodoma and Singida regions. Six districts from two regions were purposively selected based on their potential for chicken population. A total of 176 adult local chickens of both sexes were used to estimate the body weight, linear body measurements and visual assessments of phenotypic traits. The results indicated that the predominant comb type was single (90.9%) followed by pea comb (6.8%). The dominant plumage colour was a combination of different colours (66%), followed by black (14%). Yellow shank colour (59.1%) was dominant over other colours. The estimated overall mean values of body weight, body length, chest circumference, and shank length were 1.80 kg, 39.3, 31.3, and 8.8 cm, respectively. Males were significantly heavier than females (2.2 vs 1.3 kg; p < 0.05). The values of most linear body measurement traits were significantly different ( p < 0.01). The chest circumference was not significantly different across the studied districts. The present finding suggests that indigenous chickens in the study area possess unique genetic potentials that would be used for further breeding programs for optimum utilisation of these genetic resources by the rural communities.
摘要本研究旨在评估坦桑尼亚、中部地区、珍贵的Dodoma和Singida地区土生鸡种群的表型多样性。根据两个地区的鸡群潜力,有目的地选择了6个县。选取176只成年地方鸡(雌雄)进行体重估算、体重线性测量和表型性状视觉评价。结果表明,以单梳为主(90.9%),其次为豌豆梳(6.8%);主要的羽毛颜色是不同颜色的组合(66%),其次是黑色(14%)。黄小腿色(59.1%)在其他颜色中占主导地位。估计体重、体长、胸围和小腿长度的总体平均值分别为1.80 kg、39.3、31.3和8.8 cm。男性明显比女性重(2.2 vs 1.3 kg;p & lt;0.05)。大多数线性体测量性状的值差异有统计学意义(p <0.01)。各研究地区的胸围没有显著差异。目前的研究结果表明,研究地区的土鸡具有独特的遗传潜力,可用于进一步的育种计划,以便农村社区最佳地利用这些遗传资源。
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引用次数: 0
Design of smart farming communication and web interface using MQTT and Node.js 基于MQTT和Node.js的智能农业通信和web界面设计
Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0159
Arjon Turnip, Fikri Rida Pebriansyah, Tualar Simarmata, Poltak Sihombing, Endra Joelianto
Abstract The sustainable development goals (SDGs) are a UN agenda that has been approved by all UN member states. The SDGs have 17 targets, one of which is to eliminate hunger. In 2050, the world’s population is expected to reach 9.7 billion people. Improved soil and water management, according to the World Resources Institute, is one of the options for feeding 10 billion people sustainably by 2050. In comparison to conventional farming, smart and precision farming produces higher productivity at a lower cost. Based on the search for literature studies related to the development of agricultural technology, it was found that communication methods and online interfaces still require further improvement. The steps for developing the system are designing the architecture and end-to-end communication flow, designing use case diagrams, designing entity-relationship diagrams, designing user flow diagrams, implementing the system through code development, and finally testing the system. Planned communication and web design for precision smart agriculture are implemented effectively. The MQTT is used to communicate with the Node.js server worker. Data from numeric image feeds and images are directly processed by the system. The server will store all received data, including numeric data and live feeds, for future use. The back end of the website has many functions such as dataset management, device management, user administration, firmware management, control management, and live image feed management are some of the capabilities available. When 100 users access the system simultaneously, the RAM usage on the server is 167 MB. RAM utilization reaches 389 MB when 400 users access the system simultaneously. The limit for simultaneous user connections to the web interface is 400 users. The maximum number of devices that can be connected simultaneously via MQTT communication is 900.
可持续发展目标(SDGs)是联合国所有成员国批准的一项议程。可持续发展目标有17项具体目标,其中一项是消除饥饿。到2050年,世界人口预计将达到97亿人。据世界资源研究所称,改善土壤和水资源管理是到2050年可持续养活100亿人口的选择之一。与传统农业相比,智能和精准农业以更低的成本产生更高的生产力。通过对农业科技发展相关文献研究的检索,发现交流方式和在线界面还有待进一步完善。开发系统的步骤是设计体系结构和端到端通信流程,设计用例图,设计实体关系图,设计用户流程图,通过代码开发实现系统,最后对系统进行测试。精准智慧农业的计划沟通和网页设计得到有效实施。MQTT用于与Node.js服务器工作器通信。来自数字图像馈送和图像的数据由系统直接处理。服务器将存储所有接收到的数据,包括数字数据和实时提要,以备将来使用。网站的后端有许多功能,如数据集管理、设备管理、用户管理、固件管理、控制管理和实时图像提要管理是可用的一些功能。100个用户同时访问时,服务器内存占用率为167mb; 400个用户同时访问时,服务器内存占用率为389mb。用户同时连接web界面的限制是400个用户。可以通过MQTT通信同时连接的设备的最大数量是900。
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引用次数: 0
Fertiliser cost prediction in European Union farms: Machine-learning approaches through artificial neural networks 欧盟农场的肥料成本预测:通过人工神经网络的机器学习方法
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0191
V. Martinho
Abstract Machine-learning methodologies are part of the artificial intelligence approaches with several applications in different fields of science and dimensions of human life. These techniques appear in the frameworks of the digital transition, where smart technologies bring relevant contributions, such as improving the efficiency of the economic sectors. This is particularly important for sectors such as agriculture to deal with the challenges created in the context of climate changes. On the other hand, machine-learning approaches are not easy to implement, considering the complexity of the algorithms associated. Taking this into account, the main objective of this research is to present a model to predict fertiliser costs in the European Union (EU) farms through artificial neural network analysis. This assessment may provide relevant information for farmers and policymakers in the current scenario where the concerns are to identify strategies to mitigate the environmental impacts, including those from the agricultural sector and the respective use of chemical resources. To achieve these objectives, statistical information for the EU agricultural regions from the Farm Accountancy Data Network was considered for the period 2018–2020. The findings obtained show relative errors between 0.040 and 0.074 (showing good accuracy) and the importance of the total utilised agricultural area and the total output to predict the fertiliser costs.
摘要机器学习方法是人工智能方法的一部分,在不同的科学领域和人类生活维度中有多种应用。这些技术出现在数字转型的框架中,智能技术带来了相关贡献,例如提高了经济部门的效率。这对农业等部门应对气候变化带来的挑战尤为重要。另一方面,考虑到相关算法的复杂性,机器学习方法不容易实现。考虑到这一点,本研究的主要目的是通过人工神经网络分析,提出一个预测欧盟农场化肥成本的模型。在当前情况下,这一评估可能会为农民和决策者提供相关信息,其中关注的是确定减轻环境影响的战略,包括农业部门和各自使用化学资源的战略。为了实现这些目标,考虑了2018-2020年期间来自农场会计数据网络的欧盟农业地区统计信息。所获得的结果显示,相对误差在0.040到0.074之间(显示出良好的准确性),以及农业总利用面积和总产量对预测化肥成本的重要性。
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引用次数: 0
Role of actors in promoting sustainable peatland management in Kubu Raya Regency, West Kalimantan, Indonesia 行动者在促进印度尼西亚西加里曼丹Kubu Raya Regency可持续泥炭地管理中的作用
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0198
Sanudin, E. Fauziyah, T. S. Widyaningsih, A. H. Harianja, A. Widiyanto
Abstract Sustainable peatland management needs collaboration among many actors. This study portrayed the role of actors in managing peatland in Kubu Raya Regency, West Kalimantan, based on their interests and influence factors. We employ the purposive sampling method to select 13 actors to represent their institutions to assess their organization’s level of interest and influence in peatland management. The results indicated four existing groups categorized as key players, context setter, subject, and crowd. The key player group has the primary role in program planning and implementation of the Forest Management Unit of Kubu Raya, Wetland Ecosystem Management Unit, Regional Development Planning Agency, and Agriculture Service of Kubu Raya Regency. The subject group supports peatland management programs in the implementation and supervision role, which consists of forest concessionaire (PT Ekosistem Khatulistiwa Lestari) and communities. The context setter group has roles in regional planning, regional supervision, and monitoring of fire hazards, including Production Forest Management Institute in Pontianak, Fire Brigade, and Regional Forest Area Designation Agency III in Pontianak. The last stakeholder is the extension worker categorized in the crowd group, which empowers and assists the community in managing peatland. Avoiding conflicts of interest and promoting collaborative actions are essential factors needed to ensure sustainable peatland management.
摘要可持续泥炭地管理需要许多行动者之间的合作。本研究基于参与者的利益和影响因素,描绘了他们在西加里曼丹Kubu Raya Regency泥炭地管理中的角色。我们采用有目的的抽样方法,选择13名参与者代表其机构,以评估其组织对泥炭地管理的兴趣和影响力。研究结果表明,现有的四个群体被分为关键参与者、情境设定者、主体和人群。关键参与者群体在Kubu Raya森林管理部门、湿地生态系统管理部门、区域发展规划机构和Kubu Ray亚县农业服务局的项目规划和实施中发挥着主要作用。主题小组支持泥炭地管理项目的实施和监督,该项目由森林特许经营公司(PT Ekositem Khatulistiwa Lestari)和社区组成。背景设定小组在区域规划、区域监督和火灾隐患监测中发挥作用,包括蓬蒂亚纳克的生产森林管理研究所、消防队和蓬蒂亚纳克第三区域林区指定机构。最后一个利益相关者是人群小组中的推广工作者,该小组授权并协助社区管理泥炭地。避免利益冲突和促进合作行动是确保泥炭地可持续管理所需的基本因素。
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引用次数: 2
Properties of potassium dihydrogen phosphate and its effects on plants and soil 磷酸二氢钾的性质及其对植物和土壤的影响
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0167
K. Jančaitienė, R. Šlinkšienė, R. Žvirdauskienė
Abstract One of the challenges of the modern world is to improve human nutrition and to safely increase the yield of agricultural production using existing agricultural land. It is clear that sufficient agricultural efficiency cannot be achieved without fertilizers, but fertilizers must cause minimal damage to the soil. Microorganisms, such as spore-forming bacteria, actinomycetes, fungi, algae, and protozoa play an important role in the soil and keep soil healthy. One of the soil substances involved in reactions that take place in plants is cellulose. This study investigated the effect of potassium dihydrogen phosphate (PDP), synthesized (via conversion between potassium chloride and ammonium dihydrophosphate) and granulated with the addition of microcrystalline cellulose (MC), on plants (winter wheat Toras, Lithuania) and soil microorganisms. The data of plants fertilized with pure KH2PO4, ones fertilized with PDP granulated with MC, and grown without fertilizers were compared in this study. Scanning electron microscopy and differential scanning calorimetry analysis were used to characterize the obtained product. One-way analysis of variance was used to evaluate the differences of the mean values between groups. In all cases, the significance level was p ≤ 0.05. The effect of pure KH2PO4 on plant indicators was found to be lower than that of granular PDP with MC. The length of the leaves was 29.63 and 31.20 cm, green mass was 0.471 and 0.763 g, ash mass was 0.015 and 0.019 g, respectively. In addition, granular PDP with MC did not adversely affect the soil microorganisms because the number of any species of bacteria (Spore b., mineral nitrogen assimilating bacteria, cellulose degrading bacteria) did not decrease and a slight increase in the number of Actinomycetes (from 8.5 × 105 to 2.9 × 106 KSV/g) and molds (from 3.0 × 104 to 1.4 × 105 KSV/g) was observed. The granular PDP with MC that we developed and used have better physical properties, higher agrochemical efficiency and cause less harm to soil microorganisms compared to pure PDP.
现代世界面临的挑战之一是改善人类的营养状况,并利用现有的农业用地安全提高农业生产的产量。很明显,没有肥料就不能达到充分的农业效率,但是肥料必须对土壤造成最小的损害。形成孢子的细菌、放线菌、真菌、藻类、原生动物等微生物在土壤中发挥着重要作用,保持土壤的健康。在植物中发生的反应中涉及的一种土壤物质是纤维素。本研究考察了磷酸二氢钾(PDP)经氯化钾和磷酸二氢铵转化合成并添加微晶纤维素(MC)造粒后对植物(冬小麦Toras,立陶宛)和土壤微生物的影响。本研究比较了施用纯KH2PO4、施用MC颗粒化PDP和不施肥植株的数据。用扫描电镜和差示扫描量热分析对所得产物进行了表征。采用单因素方差分析评价组间均值的差异。所有病例的显著性水平均为p≤0.05。纯KH2PO4对植株各项指标的影响低于含MC的颗粒PDP,叶片长度分别为29.63和31.20 cm,绿质量分别为0.471和0.763 g,灰分质量分别为0.015和0.019 g。此外,添加了MC的颗粒状PDP对土壤微生物没有产生不利影响,因为任何种类的细菌(孢子b、矿物氮同化细菌、纤维素降解细菌)的数量都没有减少,放线菌(从8.5 × 105增加到2.9 × 106 KSV/g)和霉菌(从3.0 × 104增加到1.4 × 105 KSV/g)的数量略有增加。与纯PDP相比,我们开发和使用的含MC颗粒PDP具有更好的物理性能、更高的农化效率和对土壤微生物的危害更小。
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引用次数: 1
Effects of salt stress on growth of Quercus ilex L. seedlings 盐胁迫对冬青栎幼苗生长的影响
IF 2.3 Q2 Agricultural and Biological Sciences Pub Date : 2023-01-01 DOI: 10.1515/opag-2022-0211
G. Gugliuzza, C. Gentile, D. Scuderi, E. Palazzolo, V. Farina
Abstract High salt concentration is one of the main factors that affects plants’ growth, especially in urban areas. Many Mediterranean sclerophyllous species manifest high resistance to salt, although few information exists in the literature on Quercus ilex. The aim of this work was to evaluate the response of Q. ilex seedlings to salt stress conditions generated by an increasing concentration of sodium chloride on water supply irrigation. A 2-year experiment was conducted by using salt water at different concentrations (first year 50–100–200 and second year 75–150–300 mM NaCl). At increasing salt concentration, a plant growth reduction was registered in both years. Until 200 mM NaCl, the plants grew and did not show any visible damage on the leaves, while at 300 mM NaCl, all the plants died. Also, the photosynthetic rate decreased at increasing salt concentration. Sodium was accumulated in the plant parts and this accumulation occurred at the expense of potassium uptake.
摘要高盐浓度是影响植物生长的主要因素之一,尤其是在城市地区。许多地中海硬叶栎属物种表现出很高的耐盐性,尽管文献中关于冬青栎的信息很少。这项工作的目的是评估冬青幼苗对供水灌溉中氯化钠浓度增加所产生的盐胁迫条件的反应。通过使用不同浓度的盐水进行为期2年的实验(第一年50–100–200,第二年75–150–300 mM NaCl)。随着盐浓度的增加,这两年的植物生长都有所减少。直到200 mM NaCl,植物生长并且在叶片上没有显示出任何可见的损伤,而在300 mM NaCl,所有植物死亡。此外,光合速率随着盐浓度的增加而降低。钠在植物部分积累,这种积累是以钾吸收为代价的。
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引用次数: 0
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Open Agriculture
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