Study On Lighting System Optimization Of Indoor Ornamental Sun Plants

With the development of social economy,people’s demands for material and spiritual are gradually increasing.Under such an opportunity,plant landscape design began to be gradually applied in indoor environment.However,due to the limitation of indoor light environment,shade plants were basically adopted in indoor plant landscape design,while most flower and fruit plants could not be applied in indoor landscape design.Thus,the expression effect and ornamental value of indoor plant landscape design are limited.By comparing the difference between indoor light environment and plant growth demand,the study believes that artificial light filling is needed to ensure the growth of sun plants in indoor environment.Through the analysis of artificial light source,it is believed that the red and blue light filling efficiency of LED is the highest.At the same time,according to the lighting standards of human settlements,the research believes that the lighting system for light-loving plants should be divided into ornamental and growing modes,so as to ensure the needs of both people and plants.At present,there is a lack of research on the growth of sun landscape plants.This paper takes Hylotelephium spectabile as the research object,and studies the growth of Hylotelephium spectabile under different parameters of sun landscape plants by changing the light intensity,light spectrum and light duration of the light source in the indoor environment.The main research results and conclusions are as follows:(1)This study proved that in the absence of natural light,only LED filling light can still satisfy the growth and development of sun plant Hylotelephium spectabile.The smallest amount of light accumulated per day is 10.1 mol/(m~2·d),which can be achieved in four to six hours per day.Therefore,the fill light lamp can avoid the activity time of personnel to fill light.The feasibility of the application of sun plants in interior landscape design is proved.(2)Light sources of different spectra have a direct impact on plant physiological growth.The use of red and blue light can improve the efficiency of light replenishment and promote plant growth.The use of red and blue light to fill the light of Hylotelephium spectabile changes the morphological characteristics of eight treasures Hylotelephium spectabile,making its plant shape more compact,leaves more fat,more ornamental value.(3)In this study,the flower breeding process of Hylotelephium spectabile was completed under artificial light condition,and the ornamental effect of Hylotelephium spectabile flowers was not significantly different from that under natural light condition.It was found that red light promoted the flower formation of Hylotelephium spectabile,while high blue light had a negative effect on the flower.At the same time,photoperiod change was used to realize the regulation of short-day flower eight treasure Hylotelephium spectabile flowering time.Under the regulation of different photoperiod,the flowering time was advanced 14 days and delayed 40 days,respectively.In summary,through the design of light source,light intensity,photatic period and light filling strategy,this paper has completed the lighting design of eight treasures of the sun landscape plant,so that it can be applied to the landscape design of indoor plants.At the same time,as a landscape plant that likes bright light,the research data of Hylotelephium spectabile has certain reference value for other sun plants.