补光时间及光质对温室甜椒矿质元素吸收与分配的影响  

Effects of Supplemental Light Quality and Durations of Illumination on Mineral Nutrient Absorption and Distribution of Greenhouse-Grown Sweet Pepper

作　　者：段青青 张自坤 常培培 张禄祺 王静静 贺洪军 DUAN Qingqing;ZHANG Zikun;CHANG Peipei;ZHANG Luqi;WANG Jingjing;HE Hongjun(Dezhou Academy of Agricultural Sciences,Dezhou,Shandong 253015)

机构地区：[1]德州市农业科学研究院,山东德州253015

出　　处：《核农学报》2020年第8期1814-1825,共12页Journal of Nuclear Agricultural Sciences

基　　金：现代农业产业技术体系专项资金(CARS-24-G-12);山东省现代农业产业技术体系专项基金(SDAIT-05-03)。

摘　　要：为探究发光二极管(LED)补光对温室甜椒矿质元素吸收及分配的影响,以甜椒品种奥黛丽为试材,设置红光(R)和蓝光(B)组合2∶1(2R1B)、4∶1(4R1B)、8∶1(8R1B) 3种光质,2 h(18:00-20:00)、4 h(18:00-22:00)和8 h(18:00-02:00) 3个补光时间,以不补光为对照(CK),研究补光时间及光质对甜椒N、P、K、Ca、Mg、Mn、Zn积累及分配的影响。结果表明,光质与补光时间显著影响矿质元素在甜椒中的积累与分配,且二者存在显著的交互作用。与CK相比,LED补光显著促进了甜椒全株中N、P、K、Ca、Mg和Mn的积累,光质对N、P、K、Mg、Mn积累总量的影响无显著差异,但补光时间会显著影响矿质元素的积累,以补光8 h的元素积累量最高,其N、P、K、Ca、Mg和Mn的单株积累量分别较CK增加51.82%、55.56%、47.55%、50.00%、56.76%和36.23%,补光4 h的N、Ca、Mn积累总量与补光8 h无显著差异。从分配比例来看,与CK相比,补光2 h降低了N、P、Mg、Mn在果实中的分配比,补光4 h提高了N、P、K、Mg、Mn在果实中的积累总量和分配比。综上,光质对甜椒矿质元素的积累量影响较小,LED补光4 h在调控甜椒营养积累与分配上表现最佳。本试验结果为温室栽培甜椒补光调控的营养吸收机制提供了理论参考。To explore the effect of LED supplementary lighting on mineral nutrients absorption and distribution of greenhouse-grown sweet pepper(Capsium annuum L.),Aodaili was chosen as materials to investigate effects of different LED light quality and durations on accumulation and distribution of N,P,K,Ca,Mg,Mn,Zn in sweet pepper plants.The light emitting diode(LED)as light sources were provided with three light qualities(the ratio of red and blue light 2:1,2R1B;4:1,4R1B and 8:1,8R1B),and three supplemental light durations(2 h,18:00-20:00;4h,18:00-22:00;8h,18:00-02:00),and no supplemental light was taken as control(CK).The results showed that the accumulation and distribution of mineral nutrients in sweet pepper were significantly affected by light quality and light duration and interaction existed between them.Compared with CK,supplementary lighting significantly increased the accumulation of N,P,K,Ca,Mg and Mn in whole sweet pepper plants.No differences were found in the N,P,K,Mg and Mn accumulation among 2R1B,4R1B and 8R1B treatments in the whole sweet pepper plants.While the light durations affected the accumulation of mineral nutrients significantly,treatment of 8 h showed the highest accumulation in N,P,K,Ca,Mg and Mn which increased by 51.82%,55.56%,47.55%,50.00%,56.76%and 36.23%compared separately with CK,moreover,there were no significant differences existed in N,Ca,Mn accumulation between treatments of 4 and 8 h.In contrast with CK,sweet pepper treated for 2 h decreased N,P,Mg,Mn distribution ratio in fruits,while that treated for 4 h increased accumulation and distribution of N,P,K,Mg,and Mn in fruits.In conclusion,light quality had little effect on accumulation of the mineral elements in sweet pepper,but supplementary lighting of 4 h was optimal for regulating the accumulation and distribution of mineral nutrients in sweet pepper.These results provide theoretical reference for absorption mechanism of mineral nutrients for greenhouse-grown sweet pepper regulated by LED supplemental lighting.

关 键 词：甜椒 LED补光 光质 补光时间 矿质元素 

分 类 号：S626[农业科学—园艺学] S641.3