摘要
设计制作了不同红蓝光效比的LED灯板式光源培养芥菜;采用丙酮、无水乙醇溶液对成株芥菜进行叶绿素提取,并应用Arnon法测量芥菜叶子中的叶绿素浓度.实验结果表明:在补光的红蓝光效率比(R/B)为7:1时芥菜叶绿素含量最高;本文还对植物生长过程中的光物理问题进行了讨论.
We adopt the red LED at wavelength of 660 nm and the blue ones at the wavelength of 450 nm to construct the LED lamp cultivating mustard,the photon flux density used is 150 μmol·m-2·s-1.The experiment includes two groups with different filling time,and each group is divided into 4 groups in which R/B respectively 9∶1,7∶1,5∶1 and one use the natural light.After 30 days cultivation,we use Arnon＇s method with acetone and anhydrous ethanol with proportion to 2∶1 to detect the concentration of chlorophylls of mustard.The experiment results show that the chlorophyll concentration under the LED lamp with R/B ratio 7∶1 undergoes the highest one.
出处
《大学物理》
北大核心
2013年第5期57-60,共4页
College Physics
