检索结果-南通市图书馆

Review of the detasseling techniques for maize(Zea mays L.)hybrid seed production

international Journal of agricultural and Biological Engineering 2024年第3期17卷 1-11页

作者： Ruirui Zhang Jiaxuan Yang Liping Chen Chenchen Ding Longlong Li Linhuan Zhang national research center of Intelligent Equipment for Agriculture Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China national center of international research on agricultural aerial application technology Beijing 100097China research center of Intelligent Equipment Beijing Academy of Agriculture and Forestry SciencesBeijing 100097China

Maize(Zea mays L.)is a critical staple crop globally,integral to human consumption,food security,and agricultural product *** quality and purity of maize seeds,essential for hybrid seed production,are contingent upon effective *** study investigates the evolution of detasseling technologies and their application in Chinese maize hybrid seed production,with a comparative analysis against the United States.A comprehensive examination of the development and utilization of detasseling technology in Chinese maize hybrid seed production was undertaken,with a specific focus on key *** from the United States were included for comparative *** analysis encompassed various detasseling methods,including manual,semi-mechanized,and cytoplasmic male sterility,as well as more recent innovations such as detasseling machines,and the emerging field of intelligent detasseling driven by unmanned aerial vehicles(UAVs),computer vision,and mechanical *** detasseling methods were predominantly employed by *** the challenges of inflexible and occasionally overlooked,applying detasseling machines is efficient and *** present,China’s detasseling operations in hybrid maize seed production are mainly carried out by manual work,which is labor-intensive and *** order to address this issue,China is dedicated to developing intelligent detasseling *** study emphasizes the critical role of detasseling in hybrid maize seed *** United States has embraced mechanized *** application and development of manual and mechanized detasseling were applied later than those in the United States,but latest intelligent detasseling technologies first appeared in *** detasseling is expected to be the future direction,ensuring the quality and efficiency of hybrid maize seed production,with implications for global food security.

关键词： detasseling technique detasseling machine UAVs intelligent agriculture maize hybrid seed production

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Method for UAV spraying pattern measurement with PLS model based spectrum analysis

引用

international Journal of agricultural and Biological Engineering 2020年第3期13卷 22-28页

作者： Ruirui Zhang Yao Wen Longlong Li Liping Chen Gang Xu Yanbo Huang Qing Tang Tongchuan Yi national research center of Intelligent Equipment for Agriculture Beijing Academy of Agricultural And Forestry SciencesBeijing 100097China Beijing research center of Intelligent Equipment for Agriculture Beijing Academy of Agricultural And Forestry SciencesBeijing 100097China national center for international research on agricultural aerial application technology Beijing Academy of Agricultural And Forestry SciencesBeijing 100097China Beijing Key laboratory of Intelligent Equipment technology for Agriculture Beijing Academy of Agricultural And Forestry SciencesBeijing 100097China United States Department of Agriculture Agricultural Research ServiceCrop Production Systems Research UnitStoneville MS 38776USA

Unmanned aerial vehicle(UAV)chemical application is widely used for crop protection,and spraying pattern is one of the most important factors that influence the chemical control efficacy.A method for UAV spraying pattern measurement with partial least squares(PLS)model based spectrum analysis was proposed in this study to measure the UAV spraying pattern more *** method involved the steps of fluorescent tracer solution spray and its droplets collection,the spectrum on paper strip acquiring,spectrum processing and analysis,PLS *** order to verify the applicability of the method and obtain the parameters of the PLS model,UAV spraying experiments were performed in the *** Fluorescent tracer solution was sprayed and its droplets are collected by paper strip,and the original spectrum on paper strip obtained by a spectrometer was processed by the Savitzky-Golay and standard normalized variable(SNV)*** prediction model of coverage rate selected as the droplet deposition parameter to measure the UAV spraying pattern,was established by using PLS *** verify the superiority of the PLS model,a traditional linear regression(LR)model of coverage rate was established *** results demonstrate that the method with PLS model based spectrum analysis can measure the UAV spraying pattern effectively,and PLS model has a better performance of RV2=0.94 and RMSEP=0.9446 than that of the LR model.

关键词： pattern measurement UAV spraying spectrum model coverage rate partial least squares method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Review of agricultural spraying technologies for plant protection using unmanned aerial vehicle(UAV)

引用

international Journal of agricultural and Biological Engineering 2021年第1期14卷 38-49页

作者： Haibo Chen Yubin Lan Bradley K Fritz W.Clint Hoffmann Shengbo Liu Experimental Basis and Practical Training center South China Agricultural UniversityGuangzhou 510642China national center for international Collaboration research on Precision agricultural Aviation Pesticides Spraying technology Guangzhou 510642China College of Electronic Engineering South China Agricultural UniversityGuangzhou 510642China USDA-ARS aerial application technology research Unit College StationTX 77845USA Prology Consulting College StationTX 77845USA

With changing climate and farmland ecological conditions,pest outbreaks in agricultural landscapes are becoming more frequent,increasing the need for improved crop production tools and ***-based agricultural spraying is anticipated to be an important new technology for providing efficient and effective applications of crop protection *** paper reviews and summarizes the status of the current research and progress on UAV application technologies for plant protection,and it discusses the characteristics of atomization by unmanned aircraft application systems with a focus on spray applications of ***,the factors influencing the spraying performance including downwash airflow field and operating parameters are analyzed,and a number of key technologies for reducing drift and enhancing the application efficiency such as remote sensing,variable-rate technologies,and spray drift models are *** on the reviewed literature,future developments and the impacts of these UAV technologies are *** review may inspire the innovation of the combined use of big data analytics and UAV technology,precision agricultural spraying technology,drift reduction technology,swarm UAV cooperative technology,and other supporting technologies for UAV-based aerial spraying for scientific research in the world.

关键词： UAV plant protection spraying technology drift reduction pesticide efficacy spraying model big data analytics

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design and anti-sway performance testing of pesticide tanks in spraying UAVs

引用

international Journal of agricultural and Biological Engineering 2019年第1期12卷 10-16页

作者： Yu Zang Ying Zang Zhiyan Zhou Xiuyan Gu Rui Jiang Lingxi Kong Xingang He Xiwen Luo Yubin Lan College of Engineering South China Agricultural University/Guangdong Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China national Joint research center for Precision agricultural Aviation application technology Guangzhou 510642China Key Laboratory of Key technology on agricultural Machine and Equipment(South China agricultural University) Ministry of EducationGuangzhou 510642China

Anti-sway performance is one of the most important factors that affect the stability of unmanned aerial vehicles(UAVs).In this study,an anti-sway performance testing method and an evaluation formula for pesticide tanks were developed,which could facilitate the design and application of pesticide *** detection device mainly comprises a testing stand,a mounting and testing part,and a driving and control *** the testing method,P(maximum pressure)measured by a barometer and t(fluctuation recovery time)measured by a high-speed camera were used as evaluation *** the aim to determine the optimal position of the pressure detection device and the optimal filling ratio,four representative pesticide tanks were involved in this *** results showed that the optimal position of the pressure detection device was at the middle position on the tank wall,halfway up from the bottom,and the optimal filling ratio was *** P and t as evaluation indexes,a comprehensive evaluation formula was developed based on these tests:S=0.7Pi+***-sway performance of pesticide tanks was evaluated by a comprehensive score.A disk pesticide tank with a baffle was determined to be the best among the four types of pesticide tanks,showing a score of *** scores of the other three pesticide tanks were 0.500,0.428 and 0.612,*** results indicated that the baffle structure in the pesticide tank and the radian design of the tank wall can effectively improve the anti-sway performance of a pesticide *** proposed detection device and test method are simpler and more intuitive compared to other approaches in evaluating the anti-sway performance of pesticide tanks in spraying UAVs,and they can be used as a reference to guide the design of pesticide tanks and the stability evaluation of spraying UAVs.

关键词： spraying UAV pesticide tank liquid sloshing anti-sway performance test detection method

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Test and evaluation method for endurance performance of electric multi-rotors spraying drones

引用

international Journal of agricultural and Biological Engineering 2019年第2期12卷 18-28页

作者： Rui Ming Zhiyan Zhou Xiwen Luo Yubin Lan Xingang He Cancan Song Rui Jiang Luhong Tian Shahbaz Gul Hassan College of Engineering South China Agricultural University/Guangdong Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China national Joint research center for Precision agricultural Aviation application technology Guangzhou 510642China Key Laboratory of Key technology on agricultural Machine and Equipment(South China agricultural University) Ministry of EducationGuangzhou 510642China

The endurance performance(EP)of electric multi-rotors spraying drones(EMSDs)is a key technical indicator that ensures the completion of tasks and improves their *** improve the EP of current EMSD,a test system was designed to determine the EP based on the EMSD test platform,and the performance evaluation method was ***,a test model was established to determine the equivalent energy dissipation using the performance-testing platform of the ***,a multisensory test system was *** attitude sensor,high-power DC power supply,infrared thermal imager,and serial port server were *** mounting fixture was designed to meet the universal mounting requirements of *** addition,the software LabVIEW was employed to program the code for the controller and the host computer,where functions such as data collection,data processing,communication,and graphical user interface(GUI),were performed reliably in real ***,the test method was explored by considering factors such as the power consumption,thermal efficiency ratio,and unit load power consumption *** particular,a comprehensive index method and expert consultation weight method were used to evaluate the EP of the EMSD with multiple ***,a systematic real-machine test was carried out on the three types of drones that are currently widely used in the *** results verified the effectiveness and feasibility of the proposed method,which was employed to test and evaluate the EP based on the EMSD performance testing *** the same time,it can provide a reference for the development of the EMSD.

关键词： agricultural aviation multi-rotors spraying drone endurance performance assessment method virtual instrument

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Design and test of centrifugal disc type sowing device for unmanned helicopter

引用

international Journal of agricultural and Biological Engineering 2018年第2期11卷 55-61页

作者： Cancan Song Zhiyan Zhou Xiwen Luo Yubin Lan Xingang He Rui Ming Keliang Li Shahbaz Gul Hassan College of Engineering South China Agricultural University/Guangdong Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China national Joint research center for Precision agricultural Aviation application technology Guangzhou 510642China Key Laboratory of Key technology on agricultural Machine and Equipment(South China agricultural University) Ministry of EducationGuangzhou 510642China

In China,it is difficult for manned aircraft to sow seeds in small and scattered plots,especially in areas including hills,swamps,telegraph poles,windbreaks,and residential areas;in such terrain,the sowing machinery cannot function ***,unmanned helicopters(UHs)are flexible enough to control and adapt to the complex environments that are not easily accessible by terrain sowing machinery and large agricultural aircraft,which have been widely used in *** this study,a centrifugal disc-type sowing device for an unmanned helicopter(CDTSDUH)was *** factors influencing the seed velocity when the seeds move away from the disc were explored by analyzing the forces of the seed acting on the sowing disc and the wind field of the *** influential factors include the distance from the falling mouth to the center of the disc,the offset angle of the falling mouth,and the rotation speed of the *** orthogonal test was designed with the sowing width and the curvature of the sowing area as the *** test results showed that the three factors mentioned above had a greater impact on the sowing width than the curvature of the seeding ***,the superior parameters of the disc were *** was also suggested that the above factor levels had little effect on the offset width of *** results of the test conducted for studying the sowing uniformity of the CDTSDUH indicated that the maximum and minimum difference values among the number of particles of the sampling points in the forward direction was 11 and 8,and the coefficient of variation of the number of particles in each row was more than 20%,indicating less uniformity was achieved when sowing in the lateral(perpendicular to the forward direction)direction,as compared to that in the forward *** study determined the ideal values for the radius of particles position,the offsetting angle,and the disc speed of the sowing machinery ***,considering that

关键词： sowing unmanned helicopter aircraft sowing centrifugal disc uniformity sowing disc

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current status and future trends of precision agricultural aviation technologies

引用

international Journal of agricultural and Biological Engineering 2017年第3期10卷 1-17页

作者： Yubin Lan Chen Shengde Bradley K Fritz College of Engineering South China Agricultural University/National Center for International Collaboration Research on Precision Agricultural Aviation Pesticides Spraying Technology(NPAAC)Guangzhou 510642China Department of Biological and agricultural Engineering Texas A&M UniversityCollege StationTX 77845USA Texas A&M AgriLife research and Extension center BeaumontTX 77713USA United States Department of Agriculture(USDA) Agricultural Research Service(ARS)Aerial Application Technology Research UnitCollege StationTexas77845USA

Modern technologies and information tools can be used to maximize agricultural aviation productivity allowing for precision application of agrochemical *** paper reviews and summarizes the state-of-the-art in precision agricultural aviation technology highlighting remote sensing,aerial spraying and ground verification ***,the authors forecast the future of precision agricultural aviation technology with key development directions in precision agricultural aviation technologies,such as real-time image processing,variable-rate spraying,multi-sensor data fusion and RTK differential positioning,and other supporting technologies for UAV-based aerial *** review is expected to provide references for peers by summarizing the history and achievements,and encourage further development of precision agricultural aviation technologies.

关键词： precision agricultural aviation technology remote sensing aerial spraying UAV pesticide ground verification

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development of sensor system for real-time measurement of droplet deposition of agricultural sprayers

引用

international Journal of agricultural and Biological Engineering 2021年第5期14卷 19-26页

作者： Longlong Li Ruirui Zhang Liping Chen Tongchuan Yi Gang Xu Daxuan Xue Qing Tang Linhuan Zhang Andrew John Hewitt Yining An Beijing research center of Intelligent Equipment for Agriculture Beijing Academy of Agricultural and Forestry SciencesBeijing 100097China national research center of Intelligent Equipment for Agriculture Beijing 100097China national center for international research on agricultural aerial application technology Beijing 100097China Beijing Key Laboratory of Intelligent Equipment technology for Agriculture Beijing Academy of Agricultural and Forestry SciencesBeijing 100097China College of Information Engineering Capital Normal UniversityBeijing 100048China Centre for Pesticide application and Safety the University of QueenslandQueensland 4072Australia Faculty of Science and Engineering the University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina

During the chemical application process,droplet deposition on a target is an important reference indicator for evaluating the spraying technique and its *** order to quickly obtain deposition results in the field,this study proposed a novel system based on surface humidity *** basic principle is to convert the measured physical quantity change into a capacitance change,thereby realizing the physical quantity to electrical signal *** Android application for mobile terminal and the corresponding coordinator were developed,which allowed operators to control multiple sensors simultaneously through the *** soluble tracer detected by spectrophotometer was used to calibrate the *** obtained results indicated a good correlation between deposition volume and voltage increment output from the newly developed system(R2 of the six nozzles with Dv0.5 ranging from 107.28μm to 396.20μm were 0.8674-0.9729),and a power regression model based on the least squares technique(R2=0.8022)was *** the field test,the system exhibited an optimal performance in predicting the deposition *** with the conventional method of measuring tracer concentration,the deviation was less than 10%.In addition,the system exhibited good fitting curve of the deposition distribution with droplet number results measured by the water sensitive paper method.

关键词： deposition measurement agricultural sprayer droplets intelligent sensor

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluating effective swath width and droplet distribution of aerial spraying systems on M-18B and Thrush 510G airplanes

引用

international Journal of agricultural and Biological Engineering 2015年第2期8卷 21-30页

作者： Zhang Dongyan Chen Liping Zhang Ruirui Xu Gang Lan Yubin Wesley Clint Hoffmann Wang Xiu Xu Min Beijing research center of Intelligent Equipment for Agriculture Beijing 100097China national research center of Intelligent Equipment for Agriculture Beijing 100097China Key Laboratory of Agri-informatics Ministry of AgricultureBeijing 100097China Beijing Key Laboratory of Intelligent Equipment technology for Agriculture Beijing 100097China Sino-US agricultural Aviation Cooperative technology center BeijingChina and College StationTXUSA United States Department of Agriculture(USDA) Agricultural Research Service(ARS)Aerial Application Technology Research UnitCollege StationTX 77840

aerial spraying plays an important role in promoting agricultural production and protecting the biological environment due to its flexibility,high effectiveness,and large operational area per unit of *** order to evaluate the performance parameters of the spraying systems on two fixed wing airplanes M-18B and Thrush 510G,the effective swath width and uniformity of droplet deposition under headwind flight were tested while the planes operated at the altitudes of 5 m and 4 *** results showed that although wind velocities varied from 0.9 m/s to 4.6 m/s,and the directions of the atomizer switched upward and downward in eight flights,the effective swath widths were kept approximately at 27 m and 15 m for the M-18B and Thrush 510G,respectively,and the latter was more *** addition,through analyzing the coefficients of variation(CVs)of droplet distribution,it was found that the CVs of the M-18B were 39.57%,33.54%,47.95%,and 59.04% at wind velocities of 0.9,1.1,1.4 and 4.6 m/s,respectively,gradually enhancing with the increasing of wind speed;the CVs of Thrush 510G were 79.12%,46.19%,14.90%,and 48.69% at wind velocities of 1.3,2.3,3.0 and 3.4 m/s,respectively,which displayed the irregularity maybe due to change of instantaneous wind ***,in terms of the CVs and features of droplet distribution uniformity for both airplanes in the spray swath,choosing smaller CV(20%-45%)as the standard of estimation,it was found that the Thrush 510G had a better uniform droplet distribution than the *** results provide a research foundation for promoting the development of aerial spraying in China.

关键词： aerial spraying effective swath width droplet distribution coefficients of variation agricultural airplane

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization of aviation adjuvants based on wettability analysis for insecticide application on maize using UAV

引用

international Journal of agricultural and Biological Engineering 2021年第5期14卷 11-18页

作者： Yu Zang Zhiyan Zhou Ying Zang Xiwen Luo Juan Liao Rui Ming Cancan Song Le Zi Rui Jiang Hanxiang Xiao College of Engineering South China Agricultural University/Guangdong Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China national center for international Collaboration research on Precision agricultural Aviation Pesticides Spraying technology(NPAAC) Guangzhou 510642China Key Laboratory of Key technology on agricultural Machine and Equipment(South China agricultural University) Ministry of EducationGuangzhou 510642China Institute of Plant Protection Guangdong Academy of Agricultural SciencesGuangzhou 510640China

Adjuvants can increase the control efficacy of diseases and insect pests by changing the physico-chemical properties of *** of the aviation spray adjuvants are versions of ground *** insecticide sprays with unmanned aerial vehicles(UAV),have problems such as relatively low droplet deposition rate and poor ***,wettability research and optimization tests for aviation spray adjuvants are *** present study screened 12 spray adjuvants using physico-chemical property *** adjuvants were applied to improve the droplet deposition and control efficacy in maize borers controlling by *** selected spray adjuvants were Po2(a hyperbranched polymer adjuvant)and VO3(a vegetable oil adjuvant).Results showed that,(1)When Po2 was added in water-dispersible granules(WGs)at volume rate of 12 L/hm2,the dynamic surface tension(DST)of WGs was decreased by 37.41%,and the maize leaves were covered by droplets 100%,the droplet deposition was increased by 104%and maize borer control was increased by 46%;(2)VO3 decreased the surface tension of ultra-low-volume(ULV)formulation by 12.02%and the maize leaves were covered by droplets 100%.The effect of VO3 on improving the droplet deposition and control efficacy at 12 L/hm2 with ULV was not ***,the addition of aviation spray adjuvant to improve the wettability of WGs significantly improved the droplet deposition and control efficacy but it had no significant effect on the ULV formulation.

关键词： unmanned aerial vehicles spray adjuvants wettability maize insecticide application

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：