中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 用反射率、透射率和吸收率分析玉米叶片水分含量时的峰值波长选择 农业工程学报 2006,22 (5) 28-31
Position: Home > Articles > Selection of the wavelengths of peak values in analyzing leaf water status by using leaf reflectance,transmittance and absorptance in corn plants Transactions of the Chinese Society of Agricultural Engineering 2006,22 (5) 28-31

用反射率、透射率和吸收率分析玉米叶片水分含量时的峰值波长选择

作  者：
周顺利;谢瑞芝;蒋海荣;王纪华
单  位：
国家农业信息化工程技术研究中心;中国农业大学农学与生物技术学院;中国农业科学院作物科学研究所
关键词：
玉米;反射率;透射率;吸收率;水分状况
摘  要：
通过测定田间试验条件下11个玉米品种、3个氮肥处理、2个密度处理和4个生育期的100张叶片的反射、透射和吸收光谱(350~2500 nm),发现玉米叶片在近红外和短波红外的水分吸收区域的反射/透射/吸收的中心峰值波长实际发生在974 nm、1160 nm和1440 nm,在这3个峰值波长,叶片反射率、吸收率与叶片水分含量之间的相关性好于透射率。在这3个峰值波长中,反射率、透射率和吸收率相互之间的关系以1440 nm为最紧密,在此波长光谱与叶片水分含量之间的相关性也相对较强。因此,1440 nm是用叶片反射率和吸收率反演植物的水分状况的最佳峰值波长。
译  名：
Selection of the wavelengths of peak values in analyzing leaf water status by using leaf reflectance,transmittance and absorptance in corn plants
作  者：
Zhou Shunli~1,Xie Ruizhi~2,Jiang Hairong~1,Wang Jihua~3(1.College of Agronomy and Bio-technology,China Agricultural University,Beijing 100094,China;2.Crop Sciences Research Institute,Chinese Academy of Agricultural Sciences,Beijing,100081 China;3.National Engineering Research Center for Information Technology in Agriculture,Beijing 100089,China)
关键词：
corn;reflectance;transmittance;absorptance;water status
摘  要：
A field experiment consisting of eleven corn cultivars,three nitrogen level treatments and two(population) treatments to investigate the relationships among the leaf water content to leaf reflectance,transmittance and absorptance in different spectral regions of water absorption.One hundred leaves from four growth stages were analyzed.It was observed that the central wavelengths of peak values of leaf reflectance,transmittance and absorptance were at 974 nm,1160 nm and 1440 nm in the water absorption regions.The leaf reflectance and(absorptance) at 974 nm,1160 nm and 1440 nm were better related to the leaf water content than the leaf transmittance.The relationships among the leaf reflectance,transmittance and absorptance tended to be stronger at 1440 nm than that at 974 nm or at 1160 nm,and the leaf reflectance,transmittance and absorptance appeared to be slightly better related to the leaf water content than that at 974 nm or at 1160 nm.The results indicated that 1440 nm was the best wavelength of peak values in analyzing plant water status by using reflectance and absorptance.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46