便携式光合仪为新一代智能型便携式光合作用测定仪,用以测量植物叶片的光合速率、蒸腾速率、气孔导度等与植物光合作用相关的参数。仪器应用时间差分IRGA(红外气体分析)CO2分析模块和双激光调谐快速响应水蒸气传感器精密测量叶片表面CO2浓度及水分的变化情况来考察叶片与植物光合作用相关的参数。通过人工光源、CO2控制单元和温度控制单元可以同时精确调控环境条件,从而测定光强、CO2浓度和温度对植物光合系统的影响。本仪器可在高湿度、多尘等恶劣环境中使用,具有广泛的适用性。
植物的光合速率、蒸腾速率、气孔导度等光合作用参数可以全面衡量植物光合作用的强度和能力;而叶绿素荧光不仅能反映光能吸收、激发能传递和光化学反应等光合作用的原初反应过程,而且与电子传递、质子梯度的建立及ATP合成和CO2固定等过程有关。对两者的结合测量在植物光合生理研究中缺一不可。
应用领域
l 植物光合生理研究
l 植物抗胁迫研究
l 碳源碳汇研究
l 植物对全球气候变化的相应及其机理
l 作物新品种筛选
技术特点
l 配备手持式叶绿素荧光仪或者荧光成像模块,内置了所有通用叶绿素荧光分析实验程序,包括两套荧光淬灭分析程序、3套光响应曲线程序、OJIP-test等
l 彩色LCD触摸屏,屏幕和控制单元均采用膜封技术,可在高湿和多尘环境下使用
l 白光和RGB光源可选
l 内置GPS模块,精确获取经纬度及海拔数据
l 完全自动、独立控制环境参数(空气湿度,CO2浓度,温度,光照强度)
l 精确测量CO2和水蒸汽数据
l 便携式设计,体积轻小,仅重4.1Kg
l 人体工程学设计,舒适型肩带,携带操作非常简便
l 叶室手柄内置微型IRGA,有效缩短CO2测量时间
l 可在恶劣环境下操作,坚固耐用
l 可方便互换不同种类的叶室、叶夹
l 叶室材料精心选择,以确保CO2及水分的测量精度
l 数据存储量大,使用即插即拔的SD卡
l 维护方便,叶室所有区域都很容易清洁
l 采用低能耗技术,野外单电池持续工作时间长,可达16小时
l 实时图形显示功能
测量参数:光合速率、蒸腾速率、胞间CO2浓度、气孔导度、叶片温度、叶室温度、光合有效辐射、气压、GPS数据等,可进行光响应曲线和CO2响应曲线测量。
叶绿素荧光成像模块(可选)
1、可测荧光参数F0,Fm,Fv,F0’,Fm’,Fv’,QY(II),NPQ,ΦPSII,Fv/Fm,Fv’/Fm’,Rfd,qN,qP,ETR等50多项参数,每个参数均可成像2维图谱
2、 4块超亮LED双色光源板,尺寸4×4 cm;均一照明面积31.5mm×41.5 mm
3、 图像分辨率720×560像素,时间分辨率每秒50帧
4、 自动重复成像测量,可设置一个实验程序(Protocol)自动循环成像测量,成像测量数据自动按时间日期存入计算机(带时间戳)
5、具备完备的自动测量程序(protocol),可自由对自动测量程序进行编辑
a) Fv/Fm:测量参数包括Fo,Fm,Fv,QY等
b) Kautsky诱导效应:Fo,Fp,Fv,Ft_Lss,QY,Rfd等荧光参数
c) 荧光淬灭分析:Fo,Fm,Fp,Fs,Fv,QY,ΦII,NPQ,Qp,Rfd,qL等50多个参数
d) 光响应曲线LC:Fo,Fm,QY,QY_Ln,ETR等荧光参数
叶绿素荧光模块:
1、测量参数包括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、高时间分辨率,可达10万次每秒,自动绘出OJIP曲线并给出26个OJIP-test测量参数包括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
CO2测量范围:0-3000ppm
CO2测量分辨率:1ppm
CO2采用红外分析,差分开路测量系统,自动置零,自动气压和温度补偿
H2O测量范围:0-75 mbar
H2O测量分辨率:0.1mbar
PAR测量范围:0-3000 μmol m-2 s-1,余弦校正
叶室温度:-5 - 50℃ 精度:±0.2℃
叶片温度:-5 - 50℃
空气泵流量:100 - 500ml / min
CO2控制:由内部CO2供应系统提供,最高达2000ppm
H2O控制:可高于或低于环境条件
温度控制:由微型peltier元件控制,环境温度-10℃到+15℃,所有叶室自动调节
PAR控制:RGB光源最大2400μmol m-2 s-1,LED白色光源最大2500μmol m-2 s-1
可选配多种带有光源的可控温叶室、叶夹
1. 宽叶叶室:测量面积6.25cm2,适用于阔叶
2. 窄叶叶室:测量面积5.8cm2,适用于条形叶
3. 针叶叶室:适用于簇状针叶
4. 小型叶叶室:叶室直径为16.5mm,测量面积2.16cm2
5. 土壤呼吸/小型植物室:测量测量土壤呼吸,或者高度低于55mm的整株草本植物光合作用
6. 多功能测量室:分为两部分,一部分测量小型植物光合作用,另一部分测量土壤呼吸
7. 果实测量室:上下两部分组成,上部透明,下部为金属,可测量果实最大直径为11cm,最大高度为11.5cm
8. 荧光仪联用适配器:适用于连接多种叶绿素荧光仪
显示:彩色WQVGA LCD触摸屏
数据存储:SD卡,最大兼容32G容量
数据输出:Mini-B型USB接口,RS232九针D型标准接口,最大230400波特率PC通讯
供电系统:内置12V 7.5AH锂离子电池,可持续工作至16小时,智能充电器
尺寸:主机230×110×170mm,测量手柄300×80×75mm
重量:主机4.1Kg,测量手柄0.8Kg
操作环境:5到45℃
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