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Design Analysis of a Pneumatic Vehicle 气动车辆的设计分析
Pub Date : 2023-05-29 DOI: 10.56557/jobari/2023/v29i28250
B. U. Okonkwo, M. C. Osuagwu, C. C. Chiabuotu, K. C. Aladum
The Design Analysis of a Pneumatic Vehicle aims to investigate and evaluate the performance and efficiency of a three-wheeled vehicle powered by pneumatic technology. The vehicle utilizes two cylinder tanks for air storage and employs a pneumatic cylinder with specific dimensions of 50mm bore, 20mm rod, and 138mm stroke. The primary objective of this project is to comprehensively analyse the design aspects of the pneumatic vehicle and assess its potential applications and benefits. This research involves a detailed examination of the vehicle’s overall design, including its structural components, pneumatic system, and power transmission mechanisms. The performance of the vehicle, such as speed, acceleration, and manoeuvrability is assessed through practical experiments. It is being constructed with light material, simple way of working, low manufacturing and maintenance cost, it does not produce exhaust emission. The outcome contributes valuable insights into the potential applications of pneumatic vehicles, particularly those with three-wheel configurations. By evaluating the design and performance of the vehicle, the research shed light on the feasibility and advantages of adopting pneumatic technology in transportation systems. The research findings also provide useful guidelines for further improvements and optimization of the pneumatic vehicle design. Review of the availability and the impact of the fossil fuels and the cost increment in the present and future generation led us to construct a vehicle, which runs on air, as a renewable energy source. This report is a detailed description of the design, construction, working and testing of the pneumatic vehicle. In this report, operating pressure of 0.5Mpa is used, force produced by cylinder is 1864.6N, vehicle torque 93.23N-m and efficiency of the vehicle is 78%. This research also aims to explore potential applications of the pneumatic vehicle in various domains, including urban transportation, delivery services, and short-distance commuting. The reduced carbon footprint and environmental benefits associated with pneumatic vehicles make them an attractive option for sustainable transportation solutions. In conclusion, the Design Analysis of a Pneumatic Vehicle seeks to evaluate the design, performance, and efficiency of a three-wheeled vehicle powered by pneumatic technology. Through comprehensive analysis and experimentation.
气动车辆的设计分析旨在研究和评估气动技术驱动的三轮车辆的性能和效率。车辆使用两个气缸罐用于空气储存,并采用一个具有特定尺寸的50mm内径、20mm杆和138mm行程的气动气缸。该项目的主要目标是全面分析气动车辆的设计方面,并评估其潜在的应用和效益。这项研究包括对车辆整体设计的详细检查,包括其结构部件、气动系统和动力传动机构。通过实际试验,对车辆的速度、加速度、机动性等性能进行了评价。它材料轻,工作方式简单,制造和维护成本低,不产生废气排放。研究结果为气动车辆的潜在应用提供了有价值的见解,特别是那些具有三轮配置的气动车辆。通过对车辆的设计和性能进行评估,阐明了在运输系统中采用气动技术的可行性和优势。研究结果也为气动车辆的进一步改进和优化设计提供了有益的指导。回顾化石燃料的可用性和影响,以及当前和未来一代的成本增长,我们建造了一种以空气为动力的汽车,作为一种可再生能源。本报告详细介绍了气动车的设计、建造、工作和试验。在本报告中,操作压力为0.5Mpa,气缸产生的力为1864.6N,车辆扭矩为93.23N-m,车辆效率为78%。本研究还旨在探索气动车辆在城市交通、快递服务和短途通勤等各个领域的潜在应用。与气动车辆相关的碳足迹减少和环境效益使其成为可持续运输解决方案的一个有吸引力的选择。总之,气动车辆的设计分析旨在评估由气动技术驱动的三轮车辆的设计、性能和效率。通过综合分析和实验。
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引用次数: 0
Morpho-genetic and Yield Characteristics of Different Accessions of Vigna unguiculata (L.) Walp 不同品系马蹄莲的形态发生及产量特征Walp
Pub Date : 2023-05-12 DOI: 10.56557/jobari/2023/v29i18240
M. O. Yekeen, Olasumbo, M. Wahab, Kabirat O. Jimoh
Vigna unguiculata (L.) Walp. is a very important crop cultivated for its seeds, fresh/ dried leaves and young pods. The study evaluated the qualitative and morpho-agronomic characteristics of sixteen varieties of V. unguiculata for their effective utilization in genetic improvement of the species. Treatments were laid out in randomized complete block design and replicated four times. Data from quantitative characters were subjected to analysis of variance. The means were separated using Duncan’s Multiple Range Test at p<0.05. Data were also subjected to cluster analysis, while the inter-character relationship between the accessions was determined through Pearson’s Product Moment Correlation. The result showed that Tvu-9312, Tvu-7813, Tvu-9287 and Tvu-500 had the highest germination percentage (100%). Tvu-8018 had the shortest days to first flowering (46 days), while the shortest days to 50% flowering (52days) and peduncle lengths (19.88cm) were observed in Tvu-23. TVu-198 had the highest pod lengths (17.35cm), while TVu-8018 had the highest number of pods (4.63). Principal Component Analysis showed that the first three principal axes explained 72.0% of the total variation in the morphology and yield traits. The traits producing most of the observed variations include number of pods per plant, number of primary branches, days to first and 50% flowering. Cluster analysis showed the accessions were heterogeneous and morphologically diverse and clustered into 5 groups. Accessions in the different clusters can be recommended for cultivation or used in the development of improved cultivars of V. unguiculata.
蜈蚣草(L.)Walp。是一种非常重要的作物,因为它的种子、新鲜/干燥的叶子和年轻的豆荚。本研究评价了16个马蹄莲品种的质量和形态农艺特征,以便对其进行有效的遗传改良。治疗采用随机完全区组设计,重复4次。数量性状的数据进行方差分析。均数采用Duncan多重极差检验,p<0.05。数据还进行了聚类分析,并通过Pearson积矩相关确定了各资料之间的性状间关系。结果表明,Tvu-9312、Tvu-7813、Tvu-9287和Tvu-500的发芽率最高(100%)。其中,Tvu-8018到花期最短(46 d), Tvu-23到50%花期最短(52d),花梗长度最短(19.88cm)。其中,TVu-198的荚长最高(17.35cm), TVu-8018的荚数最高(4.63 cm)。主成分分析表明,前3个主轴对形态和产量性状变异的贡献率为72.0%。产生大多数观察到的变异的性状包括每株荚果数、一次枝数、首次开花天数和50%开花。聚类分析表明,这些材料具有异质性和形态多样性,可聚为5类。不同集群的选材可推荐栽培或用于开发马蹄莲的改良品种。
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引用次数: 0
Comparing Mineral Concentrations of the Middle Chalcolithic Period Ceramics with Soil of Shahrekord District for Verifying their Origin Shahrekord地区中铜石时代陶瓷与土壤的矿物含量对比,以验证其来源
Pub Date : 2023-05-04 DOI: 10.56557/jobari/2023/v29i18228
Hadis Kojouri, G. Kojouri, M. Heydarian, Alireza Khosrowzadeh
Objective: The present research was designed on soil of Shahrekord district to find and compare its mineral concentration with the Middle Chalcolithic period ceramics which found in the same area to determine their similarities in order to verify the origin of potteries. Procedure: Eighty composite soil and eight particles of Middle Chalcolithic Pottery were collected from Shahrekord district and the concentration of phosphorus, copper, molybdenum, lead and cobalt were measured by using atomic absorption spectrophotometry and inductively coupled plasma optical emission spectroscopy (ICP-OES), respectively. Statistical Analysis: For comparing the mineral concentration of soil and ceramics One Way Analysis of Variance (ANOVA) test were used at the significant level of p<0.05. Results: The average level of phosphorus, copper, molybdenum, lead and cobalt in the soil of Shahrekord district were 11.31, 12.04, 0.06, 0.79 and 0.126 mg/kg and their average in Middle Chalcolithic Potteries were 2058, 54.11, 0.92, 9.5 and 21.25 ppm, respectively. The statistical analysis showed an obvious and significant difference between soil minerals and ceramics (p<0.01). Discussion: This finding indicates that it is not possible to find out the origin of ancient ceramics by using the concentration of soil elements at present time. These significant differences may attribute to the burial place and the type of pottery used in the ancient kitchen.
目的:本研究对Shahrekord地区的土壤进行了研究,并将其与同一地区发现的中铜石器时期陶瓷的矿物含量进行了比较,以确定它们的相似性,以验证陶器的起源。方法:从Shahrekord地区采集80块复合土和8块中铜石器陶器颗粒,分别用原子吸收分光光度法和电感耦合等离子体发射光谱(ICP-OES)测定磷、铜、钼、铅和钴的浓度。统计分析:在p<0.05的显著水平上,采用单因素方差分析(One - Way Analysis of Variance, ANOVA)检验比较土壤和陶瓷的矿物质浓度。结果:沙赫里科德地区土壤中磷、铜、钼、铅和钴的平均含量分别为11.31、12.04、0.06、0.79和0.126 mg/kg,中铜石器时期土壤中磷、铜、钼、铅和钴的平均含量分别为2058、54.11、0.92、9.5和21.25 ppm。统计分析表明,土壤矿物质与陶瓷之间存在显著差异(p<0.01)。讨论:这一发现表明,目前还不可能通过土壤元素的浓度来找出古代陶瓷的起源。这些显著的差异可能归因于埋葬地点和古代厨房中使用的陶器类型。
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引用次数: 0
A Fine Technique for Automatic Inspection of Surface Mount Components 一种表面贴装件自动检测的精细技术
Pub Date : 2023-04-13 DOI: 10.56557/jobari/2023/v29i18201
Wen-Yen Wu, Cheng-Yo Lee
In this paper, a machine vision technology is used to inspect surface mount components (SMC). It can receive the purpose of improving manufacturing losses caused by misjudgments of manual inspection. The detection includes missing parts, wrong parts, skew, reverse polarity, missing pin, bridging, broken pin, etc. The surface mount components to be tested in this paper include QFP (Quad Flat Package) and SOP (Small Outline Package). The proposed method consists of four parts: (1) image capture: capture the printed circuit board (PCB) image in XY-Table through camera; (2) detection: use correlation coefficient to detect missing and wrong parts; (3) positioning: judge from the RGB histogram of the shifting element; (4) segmentation: detect disconnection and bridging defects according to the segmentation result of the cumulative projection.
本文采用机器视觉技术对表面贴装元件(SMC)进行检测。可以达到改善人工检测误判造成的制造损失的目的。检测包括缺件、错件、歪斜、反极性、缺针、桥接、断针等。本文测试的表面贴装元件包括QFP (Quad Flat Package)和SOP (Small Outline Package)。本文提出的方法包括四个部分:(1)图像捕获:通过摄像机捕获XY-Table中的印刷电路板(PCB)图像;(2)检测:利用相关系数检测缺件和错件;(3)定位:根据移动元素的RGB直方图进行判断;(4)分割:根据累积投影的分割结果,检测断开和桥接缺陷。
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引用次数: 0
Flexible Manufacturing for the Promotion of Companies 促进企业的柔性制造
Pub Date : 2023-02-04 DOI: 10.56557/jobari/2023/v29i18035
Jorge Vera-Jimenez, Edilberto Matías-Mejía, Julio Daniel Cruz-Rivera, Luis Barranco-Ruiz, Pedro Ortiz-Armenta, Salvador Amado Moreno-Gutierrez
There are companies that add a free souvenir to the sale of their products; they contribute to increase the satisfaction of their "heavy users" in their purchases by receiving an extra gift. A very good promotional strategy is to periodically update this souvenir, and generally this strategy is applied according to the results of a market research on the identified tastes of the customers, and then marketing should be used for the design of the gift products. The souvenir suppliers need to have processes that can be adapted to each change requested by their customers, they must have flexible manufacturing. A review of the literature on the promotion of products destined to customers through gifts was conducted, as well as the fundamental aspects to consider in flexible manufacturing for promotional purposes. It was found that it is necessary to have technology for information management that integrates the disciplines of flexible manufacturing, marketing, information technology, design, and costs for souvenir suppliers to effectively meet their commitments; they will have the information in real time; digital information management will involve innovation in the information systems of enterprises: supplier, customer, advertising, and souvenir designer; it will involve business-savvy CIOs; it will also involve digital twin simulation and automation of the production process for effective implementation of flexible manufacturing.
有些公司在销售产品时赠送免费纪念品;他们通过收到额外的礼物来提高“重度用户”的购买满意度。一个非常好的促销策略是定期更新这个纪念品,一般这个策略是根据市场研究的结果来应用,确定顾客的口味,然后营销应该用于礼品产品的设计。纪念品供应商需要有流程,可以适应客户要求的每一个变化,他们必须有灵活的制造。对通过礼品向客户推销产品的文献进行了回顾,并考虑了为促销目的而灵活制造的基本方面。研究发现,纪念品供应商要有效履行承诺,必须具备集柔性制造、营销、信息技术、设计、成本等学科于一体的信息管理技术;他们将获得实时的信息;数字化信息管理将涉及企业信息系统的创新:供应商、客户、广告和纪念品设计师;它将涉及具有商业头脑的首席信息官;它还将涉及数字孪生仿真和生产过程的自动化,以有效地实施柔性制造。
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引用次数: 0
The Optimal Deployment of Edge Servers and Cloud Data Center 边缘服务器与云数据中心的优化部署
Pub Date : 2023-01-10 DOI: 10.56557/jobari/2023/v29i18017
Liping Yang, Xudong Wu, Ningxin Liu, Chengzhi Liu
In edge computing, the signal of the 5th generation (5G) base station is often required to be covered by edge servers to guarantee a high transmission rate. And the smaller the total distance between the 5G base stations and the edge servers is, the faster the transmission rate is. Therefore, we need to study the optimal deployment of edge servers and the cloud data center. Firstly, the cluster analysis is used to cluster the 5G base stations and obtain the cluster centers, then the edge servers are deployed in the cluster centers. Secondly, the centroid method is used to determine the location of the cloud data center. By adopting the elbow and gap statistic methods, we also study the optimal number of edge servers to be deployed. Computer simulation results show that our methods provide better deployment locations for the edge servers and the cloud data center.
在边缘计算中,通常需要边缘服务器覆盖第5代(5G)基站的信号,以保证高传输速率。5G基站与边缘服务器之间的总距离越小,传输速率越快。因此,我们需要研究边缘服务器和云数据中心的优化部署。首先利用聚类分析对5G基站进行聚类,得到集群中心,然后在集群中心部署边缘服务器。其次,采用质心法确定云数据中心的位置。采用肘部和间隙统计方法,研究了部署边缘服务器的最优数量。计算机仿真结果表明,我们的方法为边缘服务器和云数据中心提供了更好的部署位置。
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引用次数: 0
COMPARING THE MOLECULAR PROPERTIES OF ENVIRONMENTAL HORMONES WITH HEARTBEAT CHANGES IN DAPHNIA MAGNA 大水蚤环境激素分子特性与心跳变化的比较
Pub Date : 2022-12-28 DOI: 10.56557/jobari/2022/v28i68006
Yeseung Moon, Rachel Jeon
Rationale: Environmental hormones (EH) disrupt the integrity of the endocrine system. Many chemical compounds act as endocrine disruptors, such as insecticides, herbicides, plasticizers. If these chemical compounds spread outside their area of intended use, they can stay in the environment and flow down into local bodies of water and wreak havoc upon ecosystems in the area. So, understanding the underlying relationship of the EHs with the physiology of an organism may be important for the design of chemical structures that could minimize the adverse effects for the future compounds. Methods: For this study, we chose 10 environmental hormones of BFR, DMT, LCH, DMA, TTS, MLT, ANN, CFT, GPS and GCH to examine the acute cardiac effects for 30 minute incubation in 1:10 serial dilution solutions.   The heartbeat rates and their differences were evaluated at pre- and post-incubation, which was then converted into their heartbeat change% based on the pre-heartbeat rates.  Then, the heartbeat change % for the individual EH was put on a regression analysis with molecular properties such as molecular weight, XlogP, topological polar surface area (TPSA), complexity, solubility and heavy atom count. Results: The leading coefficient of polynomial function showed relationship with those molecular properties with regression coefficient R2 from 0.1163 to 0.3182. The study should be significantly recognized in that the relationship of acute cardiac effects to the molecular properties were able to quantify as a unique attempt to elucidate.  More study might be needed for in-depth clarification in the constants of the polynomial relationship.
理由:环境激素(EH)破坏内分泌系统的完整性。许多化合物作为内分泌干扰物,如杀虫剂、除草剂、增塑剂。如果这些化合物扩散到预定使用区域之外,它们就会留在环境中,流入当地水体,对该地区的生态系统造成严重破坏。因此,了解EHs与生物体生理学之间的潜在关系对于设计化学结构,从而最大限度地减少对未来化合物的不利影响可能很重要。方法:本研究选取BFR、DMT、LCH、DMA、TTS、MLT、ANN、CFT、GPS、GCH等10种环境激素,在1:10系列稀释溶液中孵育30分钟,观察其对急性心脏的影响。在孵育前和孵育后评估心率及其差异,然后将其转换为基于前心率的心跳变化%。然后,将EH个体的心跳变化%与分子量、XlogP、拓扑极性表面积(TPSA)、复杂性、溶解度和重原子数等分子特性进行回归分析。结果:多项式函数的先导系数与分子性质相关,回归系数R2在0.1163 ~ 0.3182之间。这项研究应该得到显著的认可,因为急性心脏效应与分子特性的关系能够被量化,作为一种独特的尝试来阐明。对于多项式关系的常数,可能需要更多的研究来深入澄清。
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引用次数: 0
RESPONSE OF Tagetes patula TO SOME AGRICULTURAL OPERATION, THEIR EFFECT ON GROWTH, FLOWERING AND CONTENT OF VOLATILE OIL 万寿菊对几种农业操作的响应及其对生长、开花和挥发油含量的影响
Pub Date : 2022-12-20 DOI: 10.56557/jobari/2022/v28i67984
Fanar Hashum AL Hashemi, Zohoor Fuaad Abdaljabar
This experiment was laid out in order to study the effect of nano NPK (12-12-36), Fylloton extract and salicylic acid on the growth of plants, flowers, essential oil compounds during the growing seasons of 2019. The treatment was nano NPK (0, 30, 50, 65) mg.pot-1, Fylloton extract (0,2) mL.-1 and salicylic acid (0, 120) mL.L-1. Results showed that these factors had a significant effect on all traits of Tagetes and recorded the highest plant height, number of branches, herb fresh and dry weight, days to first floret opening, flowering time, number of flowers and diameter flowers as well as the active essential oils the active essential oils (Camphor, Sabinene, Terpinene, Linalool, α-Pinene, Tagetone and Nerol) had been increased in the interaction nano2 or nano3 with Fylloton and Salicylic acid.
本试验旨在研究2019年不同生长季节纳米氮磷钾(12-12-36)、飞蓟花提取物和水杨酸对植物、花卉、挥发油类化合物生长的影响。处理为纳米氮磷钾(0、30、50、65)mg。1,水杨酸(0,120)mL.L-1,水杨酸提取物(0,2)ml . 1。结果表明,这些因素对万寿菊的所有性状均有显著影响,其中最高株高、分枝数、草本鲜重和干重、首花开放天数、开花时间、花数和花径以及活性精油(樟脑、沙宾烯、松油烯、芳樟醇、α-蒎烯、万寿菊酮和橙花醇)均在纳米2或纳米3与万寿菊和水杨酸的交互作用下增加。
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引用次数: 0
EVALUATION OF FATIGUE LEVEL BY SAFE ENTRY STATION USING NOVEL DEEP LEARNING TECHNIQUE 基于新型深度学习技术的安全进站疲劳水平评估
Pub Date : 2022-12-20 DOI: 10.56557/jobari/2022/v28i67985
Rahul Kushwah, Rajiv Muradia, A. Bist
Fatigue is an important component for screening for “Fit for Duty” at work place. The main objective of this research paper is to identify a novel deep learning technique that can be used to screen fatigue in workplace setting. In order to achieve personal and professional goals, enhance the structure of the organization and to sustain one’s living conditions in an appropriate manner, it is necessary to take into consideration the aspects of health and safety of the employees. This research paper outlines our work on the importance of detecting health, safety and fatigue in the workplace with state-of-art technology before even starting a job. This paper proposes a real-time comprehensive employee fatigue detection algorithm based on different facial landmarks to improve the detection accuracy, which detects the employee’s fatigue status by using facial video sequences without equipping them with sensor devices. The facial area is analyzed including detection of left and right eye along with the mouth region. In this paper we are proposing a novel deep learning technique to classify high, mid and low levels of fatigue. We are performing this activity at a safe entry station (SES) which also measures other vital parameters such as Body Temperature, Eye Redness, Heart Rate and Respiration Rate. The focus of the current study is on fatigue detection and our AI pipeline achieved 91% accuracy on data points collected at various sites in identification of fatigue levels.
疲劳是在工作场所筛选“适合工作”的重要组成部分。本研究论文的主要目的是确定一种新的深度学习技术,可用于在工作场所环境中筛选疲劳。为了实现个人和职业目标,加强组织结构,并以适当的方式维持个人的生活条件,必须考虑到雇员的健康和安全问题。这份研究报告概述了我们的工作,即在开始工作之前,用最先进的技术检测工作场所的健康、安全和疲劳的重要性。为了提高检测精度,本文提出了一种基于不同面部标志的实时综合员工疲劳检测算法,该算法在不配备传感器设备的情况下,利用面部视频序列检测员工的疲劳状态。对面部区域进行分析,包括检测左右眼和嘴巴区域。在本文中,我们提出了一种新的深度学习技术来对高、中、低水平的疲劳进行分类。我们在一个安全入口站(SES)进行这项活动,该站点还测量其他重要参数,如体温、眼红度、心率和呼吸率。目前研究的重点是疲劳检测,我们的人工智能管道在识别疲劳水平的各个地点收集的数据点上达到了91%的准确率。
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引用次数: 0
EFFECTS OF LIME AND BLENDED FERTILIZER RATE ON YIELD AND YIELD COMPONENTS OF BREAD WHEAT (Triticum aestivum L.) IN BASOLIBEN DISTRICT, NORTHWESTERN ETHIOPIA 石灰和混交肥用量对面包小麦产量及产量构成的影响在巴索利本地区,埃塞俄比亚西北部
Pub Date : 2022-12-16 DOI: 10.56557/jobari/2022/v28i67975
M. Alemu, Mekonnen Asrat, Yirsaw Hunegaw
Bread wheat is an economical important crop for most farmers of Basoliben district. However, the productivity of the crop has been declined from year to year mainly due to the intensity of soil acidity and nutrient depletion. Liming and fertilization has vital role for sustainable crop production. This field experiment was conducted in 2021 main season using factorial combination of five lime rate (0, 1, 2, 3 and 4 t/ha) and three rates of NPSB fertilizer (50, 100 and 150 kg/ha) treatments were laid out in RCBD and replicated three times to determine the optimum application rate. Most crop parameters were highly significantly (p<0.01) affected by main effects of lime and the blended fertilizer but days to heading, number of grains per spikes, grain yield, straw and biomass yield and harvest index were also highly significantly influenced by interaction effect. The delayed matured crop and the longest plant height crops were recorded from maximum application rates while early matured and shortest plant height crop observed from minimum rate. The highest number grains per spike and spike length observed from individual effects of 2 t/ha lime and 150 kg/ha NPSB fertilizer rates. The highest grain yield (5.8 t/ha) recorded from combined 2 t//ha lime and 150 kg/ha NPSB blended fertilizer treatment then followed by the treatment that received combined 3 t/ha lime and 150 NPSB blended fertilizer. However, the highest straw (7.23 t/ha) and biomass (12.86 t/ha) yield was obtained from the combining 3 t/ha lime with150 kg/ha NPSB blended fertilizer but the lowest yields from the control treatment. On the other hand, the economic analysis disclosed that maximum net profit of 110,873 Birr/ha obtained from the treatment received combined 2 t/ha lime and 150 kg/ha NPSB blended fertilizer with acceptable marginal rate of return (27.8%) then followed by dominated treatment (integrated 3 t/ha lime and 150 kg/ha NPSB fertilizer application). Thus, integrated use of 2 t/ha lime with150 kg/ha NPSB blended fertilizer is found optimum for the study area and to the areas with similar agro-ecological conditions. However, as the study of one season, such an investigation has to be repeated over seasons to draw a comprehensive recommendation.
面包小麦是巴索利本地区大多数农民的重要经济作物。然而,由于土壤酸性强度和养分耗竭,该作物的生产力逐年下降。施肥对作物的可持续生产起着至关重要的作用。本试验于2021年主季进行,采用5个石灰用量(0、1、2、3和4 t/ha)和3个氮磷肥用量(50、100和150 kg/ha)的因子组合,在RCBD上重复施用3次,以确定最佳施用量。除抽穗天数、穗粒数、籽粒产量、秸秆和生物量产量及收获指数受互作效应影响极显著外,石灰和混肥主效应对大部分作物参数均有极显著影响(p<0.01)。最大施用量记录了迟熟作物和最长株高作物,最小施用量记录了早熟作物和最短株高作物。石灰用量2 t/ hm2和氮磷钾用量150 kg/ hm2对穗粒数和穗长影响最大。2 t/ hm2石灰和150 kg/ hm2 NPSB混肥处理的籽粒产量最高(5.8 t/ hm2),其次是3 t/ hm2石灰和150 kg/ hm2 NPSB混肥处理。3 t/ hm2石灰配150 kg/ hm2 NPSB混肥处理的秸秆产量最高(7.23 t/ hm2),生物量产量最高(12.86 t/ hm2),对照处理产量最低。另一方面,经济分析显示,在边际收益率为27.8%的条件下,2 t/ha石灰和150 kg/ha NPSB混合施肥处理的最大净利润为110,873 Birr/ha,其次是主导处理(3 t/ha石灰和150 kg/ha NPSB混合施肥)。因此,2 t/ hm2石灰配150 kg/ hm2 NPSB混合肥料的综合使用,最适合研究区和具有相似农业生态条件的地区。然而,作为一个季节的研究,这样的调查必须在多个季节重复,以得出一个全面的建议。
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引用次数: 0
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Journal of Basic and Applied Research International
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