北京理加联合科技有限公司

LICA United Technology Limited

服务热线: 13910499761 010-51292601
企业邮箱
应用支持 Application Support
News 应用支持
农药精准施用的挑战霜霉病等真菌性病害是全球葡萄生产中的重要威胁。近140年来,铜基抗菌化合物一直是防治植物病原菌的重要手段。然而,在实际操作中因杀菌剂施用不当及农药飘移,不仅造成经济损失,还会引致农业土壤持续污染。当前,水敏纸仍是农药飘移评估的常用方法,但该方法已被证明难以精准表征农药在葡萄园的整体沉积状况。高光谱成像技术凭借非破坏性、信息维度丰富的优势,已成功应用于葡萄品种分类、果实成熟度与品质评估、冠层实时监测等领域,而利用该技术实现叶片表面农药沉积量的定量检测,仍是亟待深入研究的开放性课题。近期,西班牙布尔戈斯大学的研究团队在《Data》发表了一篇Data Descriptor,公开了一个包含372幅葡萄叶片高光谱图像的数据集。该数据集系统揭示了3种杀菌剂在不同浓度和施用条件下的光谱差异,可为精准农业中的农药沉积监测、定量分析以及机器学习模型构建提供重要的数据基础。 图1.机械工作台,连接计算机的分析显示器。高光谱数据集的构建实验设计:研究选取的葡萄品种为丹魄,采集自西班牙西加莱斯产区。实验共使用三种杀菌剂:ö 铜基杀菌剂(70% w/v氧氯化铜);ö 复配铜制杀菌剂(14% w/w氧氯化铜 + 14% w/w氢氧化铜);ö 商品化杀菌剂制剂(6% w/w霜脲氰 + 37.5% w/w灭菌丹,含硫和氯);每种农药设置六种浓度梯度(0.20、0.33、0.40、0.66、0.80、1.33 g/L),并以蒸馏水为对照;施用方式包括:(1)雾化喷嘴;(2)借助液滴定位模板,利用精密微量移液器进行5 µL液滴的局部点施;(3)手动喷雾器模拟大粒径喷雾;叶片样本于2023年7-8月采集,分别取自葡萄冠层东西两侧,且涵盖新梢基部、中部、顶部三个位置;高光谱图像采集:在受控实验室条件下,利用Resonon Pika L高光谱成像仪采集叶片高...
发布时间: 2026 - 04 - 07
浏览次数:1
LGR的二氧化碳同位素分析仪帮助中国科学院的科学家监测“新鲜有机物的质量对土壤有机物的启动和微生物底物利用率模式的影响” Quality of fresh organic matter affects priming of soil organic matter and substrate utilization patterns of microbesHui Wang1, 2 , Thomas W. Boutton3 , Wenhua Xu1 , Guoqing Hu1, 2 , Ping Jiang1 , Edith Bai1 AbstractChanges in biogeochemical cycles and the climate system due to human activities are expected to change the quantity and quality of plant litter inputs to soils. How changing quality of fresh organic matter (FOM) might influence the priming effect (PE) o...
发布时间: 2015 - 10 - 16
浏览次数:160
Rapid, Online Quantification of H2S in JP-8 Fuel Reformate Using Near-Infrared Cavity-Enhanced Laser Absorption Spectroscopy应用LGR激光痕量气体分析仪快速在线量化JP-8(特级航空材料)中的H2SFeng Dong†, Christian Junaedi‡, Subir Roychoudhury‡, and Manish Gupta*†† Los Gatos Research, 67 East Evelyn Avenue, Suite 3, Mountain View, California 94041, United States‡ Precision Combustion, Inc., 410 Sackett Point Road, North Haven, Connecticut 06473, United StatesAnal. Chem., 2011, 83 (11), pp 4132–4136DOI: 10.1021/ac200300tPublication Date (Web): May 3, 2011Copyright © 2011 American Chemical SocietyAbstractOn...
发布时间: 2015 - 10 - 10
浏览次数:212
Ecosystem carbon (CO2 and CH4) fluxes of a Populus dettoides plantationin subtropical China during and post clear-cutting Shenghua Gao a, Jiquan Chen b, Yuxi Tang c, Jing Xie d, Rui Zhang e, Jie Tang c, Xudong Zhang a,*a State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, Chinab Center for Global Change and Earth Observations (CGCEO) and Department of Geography, Michigan State University, East Lansing, MI 48823, USAc Hunan Academy of Forestry, Chang...
发布时间: 2015 - 09 - 15
浏览次数:148
HYPERSPECTRAL REMOTE SENSING FOR DETECTION OF RHIZOCTONIA CROWN AND ROOT ROT IN SUGARBEETGregory J. Reynolds1, Carol E. Windels2, Ian V. MacRae3, and Soizik Laguette4Graduate Student, Professor, Associate Professor, and Assistant Professor, respectively1University of Minnesota, Department of Plant Pathology, St. Paul2University of Minnesota, Department of Plant Pathology and Northwest Research & Outreach Center, Crookston3University of Minnesota, Department of Entomology and Northwest Research & Outreach Center, Crookston4University of North Dakota, Department of Earth System Science a...
发布时间: 2015 - 08 - 11
浏览次数:115
DETECTION OF SUGARCANE AFRICAN STALK BORER ELDANASACCHARINA WALKER (LEPIDOPTERA: PYRALIDAE) USINGHYPERSPECTRAL REMOTE SENSING (SPECTRORADIOMETRY)应用ASD地物光谱仪检测蛀虫ELDANA SACCHARINA(鳞翅目:螟蛾科)对非洲甘蔗茎部的危害程度MOKHELE TA1, AHMED F1 and CONLONG DE2,31School of Environmental Sciences, University of KwaZulu-Natal, Durban, 4041, South Africa2South African Sugarcane Research Institute, Private Bag X02, Mount Edgecombe 4300, South Africa3School of Biological and Conservation Sciences, University of KwaZulu-Natal, Private Bag X01, Scottsville, 3209, South AfricaAbstractThe South African sugar industry i...
发布时间: 2015 - 08 - 06
浏览次数:145
LGR氧化亚氮同位素分析仪测量水中硝酸盐成功案例:Analytical Chemistry 文章:Combining Denitrifying Bacteria and Laser Spectroscopy for Isotopic Analyses (δ15N, δ18O) of Dissolved Nitrate通过反硝化细菌和激光同位素分析仪测定溶解硝酸盐中的δ15N和δ18ODavid X. Soto *†, Geoff Koehler †, and Keith A. Hobson †† Environment Canada, 11 Innovation Boulevard, Saskatoon, Saskatchewan, Canada, S7N 3H5AbstractWe present a novel approach for nitrogen (δ15N) and oxygen (δ18O) isotopic analysis of nitrate in water based on the isotopic analysis of N2O produced from the conversion of NO3– by cultured denitrifying bacteria and off-axis integrated cavity output ...
发布时间: 2015 - 07 - 21
浏览次数:164
Nature 发表文章:In-situ unsaturated zone stable water isotope (2H and 18O) measurements in semi-arid environments using tunable o-axis integrated cavity output spectroscopy科学家应用LGR液态水同位素分析仪在半干旱环境下原位测量不饱和带水中2H和18O同位素比值M. Gaj1,2,  M. Beyer1,  P. Koeniger1,  H. Wanke3,  J. Hamutoko3,  and T. Himmelsbach11 Federal Institue for Geosciences and Natural Resources (BGR), Stilleweg 2, Hannover, Germany2 Chair of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Fahnenbergplatz, 79098 Freiburg, Germany3Universit...
发布时间: 2015 - 07 - 07
浏览次数:132
Inter- and intraindividual correlations of background abundances of 2H, 18O and 17O in human urine and implications for DLW measurements科学家应用LGR同位素分析仪测定人体尿液中的2H,18O和17O丰度间的相互作用对DLW测量方法的影响E S F Berman, E L Melanson, T Swibas, S P Snaith and J R SpeakmanBackground/Objectives:The method of choice for measuring total energy expenditure in free-living individuals is the doubly labeled water (DLW) method. This experiment examined the behavior of natural background isotope abundance fluctuations within and between individuals over time to assess possible methods of accounting for varia...
发布时间: 2015 - 07 - 01
浏览次数:114
科学家应用Campbell CPEC200闭路涡动相关系统测量森林碳封存Canada: Forest Carbon SequestrationCampbell Scientific CPEC200 monitors eddy-covariance fluxes in British Columbia forest 文章下载地址:79canada-vancouver-island--CPEC200.pdf4da92e4cbee3e5c7273825cef11d6136.pdf (2.84 MB)
发布时间: 2015 - 05 - 19
浏览次数:120
Field Spectroscopy in the VNIR-SWIR Region to Discriminate between Mediterranean Native Plants and Exotic-Invasive Shrubs Based on Leaf Tannin Content      基于可见光近红外(VNIR)和短波红外(SWIR),科学家应用ASD地物光谱仪测量叶片单宁的含量,从而区分地中海附近海岸的本土植物和外来入侵灌木。Authors: Jan Rudolf Karl Lehmann, André Große-Stoltenberg, Meike Römer and Jens OldelandAbstract: The invasive shrub, Acacia longifolia, native to southeastern Australia, has a negative impact on vegetation and ecosystem functioning in Portuguese dune ecosystems. In order to spectrally discriminate A. longifoliafrom oth...
发布时间: 2015 - 05 - 12
浏览次数:218
Copyright ©2018-2023 北京理加联合科技有限公司
犀牛云提供企业云服务

北京理加联合科技有限公司

地址:北京市海淀区安宁庄东路18号光华创业园5号楼(生产研发)
          光华创业园科研楼四层
电话:13910499761 13910124070  010-51292601
传真:010-82899770-8014
邮箱:info@li-ca.com
邮编:100085

 



 


 


  • 您的姓名:
  • *
  • 公司名称:
  • *
  • 地址:
  • *
  • 电话:
  • *
  • 传真:
  • *
  • 电子邮箱:
  • *
  • 邮政编码:
  • *
  • 留言主题:
  • *
  • 详细说明:
  • *
在线留言
关注我们
  • 官方微信
  • 官方手机端
友情链接:
X
1

QQ设置

3

SKYPE 设置

4

阿里旺旺设置

等待加载动态数据...

等待加载动态数据...

5

电话号码管理

  • 010-51292601
6

二维码管理

等待加载动态数据...

等待加载动态数据...

展开