植物多酚-叶绿素测量计——Dualex Scientific+

主要功能

实时非破坏测量植物叶片多酚和叶绿素含量、叶片表层类黄酮和花青素含量；

可通过多酚的测定评估植物氮的状态。

测量参数

Chl：叶绿素指数

Flav：类黄酮指数

NBI：氮平衡指数 Chl/Flav 比值

Anth：花青素指数

应用领域

植物生理生态

观赏园艺

果树学

食品科学

植物病理

逆境生理

YY植物

植物营养

遥感

茶学

主要技术参数

测量光源：5 个 LED : 1 个紫外光，1 个绿光，1 个红光和 2 个近红外光（NIR）

检测器：硅光二极管

用户界面：LCD 液晶屏，蜂鸣器

位置精度：＜2.5 m

选购指南

仪器配置：

主机一整套，已包含 GPS。

应用案例

植物氮肥监测 全新氮肥指标-氮平衡指数NBI

氮平衡指数（NBI: Nitrogen Balance Index）是叶绿素（SFR）和类黄酮（FLAV）的比值：当未发生氮肥胁迫时，植物生长健康，合成叶绿素较多，产生的多酚（类黄酮）较少；当发生氮肥胁迫时，植物营养不平衡，产生的多酚（类黄酮）较多，生成叶绿素较少。传统方法通过叶绿素判断氮肥状况，当叶片叶绿素含量下降时（叶片变黄），说明植物缺失氮肥，在实际应用中，该方法有一定的延迟效应，叶绿素下降时几天甚至十几天前氮肥缺失的表现，即使此刻施肥，也会影响作物产量。而通过测量NBI值来评估氮肥状况时，避免传统方法中的延迟效应，叶绿素和多酚（类黄酮）稍有变化，即可检测出植物的氮肥状况，及时快速进行氮肥管理。

产地：法国 Force-A

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