— 生态 · 农业 · 健康 —
时间：2018-11-14
作者：球速体育
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简介：
LCi-T 便携式光合仪是最小巧、轻便的便携式光相助用测定仪，用以丈量植物叶片的光合速率、蒸腾速率、气孔导度等与植物光相助用相关的参数。仪器应用IRGA（红外气体剖析）原理，精密丈量叶片外貌CO2浓度及水分的变革情况来考察叶片与植物光相助用相关的参数。特殊的设计可在高湿度、高尘� Ｇ榭鍪褂�。既可在研究中使用，又是很好的教学仪器。
上图左为全套光合仪主机配件及便携箱等，上图中为光合仪主机和手柄，上图右为操作人员进行野外实验
应用领域
技术特点
上图为英国剑桥大学植物科学系M. Davey博士在南极洲对藻类光相助用研究时的事情图片，因LC系列光合仪轻便小巧，坚固耐用，续航长期等特点被列为首选。
技术指标
1）丈量参数包括F0、Ft、Fm、Fm’、QY_Ln、QY_Dn、NPQ、Qp、Rfd、RAR、Area、M0、Sm、PI、ABS/RC等50多个叶绿素荧光参数，及3种给光程序的光响应曲线、2种荧光淬灭曲线、OJIP曲线等
2）高时间区分率，可达10万次每秒，自动绘出OJIP曲线并给出26个OJIP-test丈量参数包括F0、Fj、Fi、Fm、Fv、Vj、Vi、Fm/F0、Fv/F0、Fv/Fm、M0、Area、Fix Area、Sm、Ss、N、Phi_P0、Psi_0、Phi_E0、Phi-D0、Phi_Pav、PI_Abs、ABS/RC、TR0/RC、ET0/RC、DI0/RC等
1）宽叶叶室：长×宽为2.5×2.5cm，适用于阔叶及大大都叶片类型
2）窄叶叶室：长×宽为5.8×1cm，适用宽度小于1cm的条形叶
3）针叶叶室：长约69mm，直径47mm，适用于簇状针叶（白光光源）
4）小型叶叶室：叶室直径为16.5mm，丈量面积2.16cm2
5）土壤呼吸/小型植物室：丈量丈量土壤呼吸，或者高度低于55mm的整株草本植物光相助用，底面直径为11cm
6）多功效丈量室：长×宽×高为15×15×7cm，分为上下两部分，上部丈量小型植物光相助用，下部分丈量土壤呼吸
7）果实丈量室：上下两部分组成，上部透明，下部为金属，可丈量果实最大直径为11cm，最大高度为11.5cm
8）冠层丈量室：底面直径12.7cm，高12.2cm，适用于地表冠层
9）荧光仪联用适配器：适用于连接多种叶绿素荧光仪
上图从左到右依次为针叶室、果实丈量室、土壤呼吸室、多功效丈量室、冠层室
典范应用
Leaf life span optimizes annual biomass production rather than plant photosynthetic capacity in an evergreen shrub, Marty C. et al. 2010, New Phytologist, 187(2): 407-416
本文研究了Rhododendron ferrugineum（高山玫瑰杜鹃，杜鹃属模式种）净光合能力与叶片寿命的关系，发明有更多较老叶片的种群其光合能力更强（图中深色区域为一年叶片和二年叶片）。
产地：英国
选配技术计划
参考文献（仅列出部分代表性文献）
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