以叶用莴苣为试验材料, 应用ICP-AES等技术, 研究了不同光谱成分及其组合条件下生菜对矿质元素的吸收特性。 结果显示: （1）生菜常量、 微量矿质元素含量比约为Ca∶Mg∶K∶Na∶P=5.5∶2.5∶2.3∶1.5∶1.0, Fe∶Mn∶Zn∶Cu: B=25.9∶5.9∶2.8∶1.1∶1.0, 且LED及荧光灯处理下的生菜各元素含量均高于自然光, 差异显著; （2）生菜在红蓝组合LED光R/B=1∶2.75处理下对K, P, Ca, Mg, B元素的吸收量及累积量均达最大, LED及荧光灯红光均可显著促进生菜对Fe和Cu元素的吸收; （3）矿质元素含量较高及干物质积累量较高的处理均为LED灯R/B=1∶2.75和B/W=1∶1。

Mineral elements absorption and content of Lactuca sativa under different spectral component conditions were studied by ICP-AES technology. The results showed that: (1) For Lactuca sativa, the average proportion for Ca∶Mg∶K∶Na∶P was 5.5∶2.5∶2.3∶1.5∶1.0, the average proportion for Fe∶Mn∶Zn∶Cu∶B was 25.9∶5.9∶2.8∶1.1∶1.0; （2）The absorptions for K, P, Ca, Mg and B are the largest under the LED treatment R/B=1∶2.75, red light from fluorescent lamps and LED can both promote the absorptions of Fe and Cu; （3）The LED treatments exhibiting relatively higher content of mineral elements are R/B=1∶2.75 and R/W=1∶1 while higher dry matter accumulations are R/B=1∶2.75 and B/W=1 ∶1.