CAJ | 학술논문

在植物工厂全密闭环境中水培种植大速生生菜，以光谱比例可调节的L ED灯板为植物生长光源，应用电感耦合等离子体原子发射光谱技术（ICP-AES），研究了红蓝LED组合光谱下生菜对K ，P ，Ca ，Mg ， Na ，Fe ，Mn ，Zn ，Cu ，B ，Mo等11种营养元素的吸收特性。结果表明：（1）与叶绿素生理吸收波峰（峰值450和660 nm）对应的单一或组合光谱均可增强水培生菜根对Na ，Fe ，Mn ，Cu ，Mo元素的吸收能力，且单一红光光谱的促进作用最为显著，四种元素含量分别为荧光灯全光谱下的7.8，4.2，5.3，11.0倍；（2）根对K和B元素的吸收量在荧光灯全光谱下达到最大分别为10.309 mg · g -1和32.6μg · g -1，而在红、蓝单一或组合光谱下吸收能力降低；（3）单一蓝色光谱下根对Ca和Mg元素的吸收受到抑制，分别比荧光灯对照降低35％，33％；（4）生菜在30％蓝光＋70％红光的光谱条件下生物量最高，而在20％蓝光＋80％红光条件下对Ca ，M g ，Na ，Fe ，M n ，Zn ，B七种元素的累积量达到最大值。试验结果为水培生菜光源光谱选择及营养液配方调节提供了理论依据。
재식물공엄전밀폐배경중수배충식대속생생채，이광보비례가조절적L ED등판위식물생장광원，응용전감우합등리자체원자발사광보기술（ICP-AES），연구료홍람LED조합광보하생채대K ，P ，Ca ，Mg ， Na ，Fe ，Mn ，Zn ，Cu ，B ，Mo등11충영양원소적흡수특성。결과표명：（1）여협록소생리흡수파봉（봉치450화660 nm）대응적단일혹조합광보균가증강수배생채근대Na ，Fe ，Mn ，Cu ，Mo원소적흡수능력，차단일홍광광보적촉진작용최위현저，사충원소함량분별위형광등전광보하적7.8，4.2，5.3，11.0배；（2）근대K화B원소적흡수량재형광등전광보하체도최대분별위10.309 mg · g -1화32.6μg · g -1，이재홍、람단일혹조합광보하흡수능력강저；（3）단일람색광보하근대Ca화Mg원소적흡수수도억제，분별비형광등대조강저35％，33％；（4）생채재30％람광＋70％홍광적광보조건하생물량최고，이재20％람광＋80％홍광조건하대Ca ，M g ，Na ，Fe ，M n ，Zn ，B칠충원소적루적량체도최대치。시험결과위수배생채광원광보선택급영양액배방조절제공료이론의거。
Lettuce (Lactuca sativa) was hydroponically cultured in a completely enclosed plant factory ,in which spectrum pro-portion-adjustable LED panels were used as sole light source for plant grow th .Absorption and content of eleven mineral elements such as K ,P ,Ca ,Mg ,Na ,Fe ,Mn ,Zn ,Cu ,B and Mo in Lactuca sativa under different spectral component conditions were studied by ICP-AES technology .The results showed that :(1) Single or combined spectrums corresponding to the absorbing peaks of chlorophyll a and b (450 ,660 nm) could enhance the absorbing ability of roots especially for mineral elements Na ,Fe , Mn ,Cu and Mo ,the single red spectrum had the most significant promoting effect under which contents of those four elements were respectively 7.8 ,4.2 ,4.0 and 3.7 times more than that under FL ;(2) Absorption of K and B was the highest under FL which was 10.309 mg · g -1 and 32.6 μg · g-1 while the values decreased significantly under single or combined spectrum of red and blue;(3) Plants grown under single blue spectrum had the lowest absorption of Ca and Mg which respectively decreased by 35% and 33% than FL ;(4) Lettuce grown under the spectrum combination of 30% blue and 70% red had the highest accumula-tions of biomass while those grown under 20% blue and 80% red had the highest accumulations of the following seven elements Ca ,Mg ,Na ,Fe ,Mn ,Zn and B .The results provided theoretical basis for adjusting nutrient solution formula and selecting light spectrum of hydroponic lettuce .