Over the past decade, the speedy development of Chinese horticulture space, plant growth light setting management lighting technology has attracted attention. farming lighting technology is principally utilized in 2ways:
First, within the less sunshine hours or a brief time, play as supplementary lighting plant photosynthesis;
Second, play as a plant light-weight cycles, lightweight growing evoked lighting.
1. semiconductor diode supplemental lighting for plant chemical change, standard artificial light-weightgenerated an excessive amount of heat. If use the semiconductor diode for supplemental lighting aquaculturalsystems, air circulation may be offered, an excessive amount of heat and wet may be removed; the ability may be expeditiously reborn picture synthetically active radiation is eventually reworked into stuff. analysis shows that: the employment of semiconductor diode lighting, the expansion rate of lettuce, photosynthetic rate haveraised quite 2 hundredth, the semiconductor diode for plant industrial plant is possible.
The study found that compared with fluorescent lamps, mixed wavelength semiconductor diode source of illumination will considerably promote the expansion of spinach, radishes and lettuce, improve morphological indicators; that is in a position to create beet bioaccumulation largest hair roots beet pigment accumulation of the foremost vital and turn out within the hair roots High sugar and starch accumulation.
Compared with metal salt lamps, pepper, basil plants growing in line with wavelength semiconductor diodeunderneath its stems, leaves anatomic vital changes occur, and with the optical density raised, the photosyntheticrate of plants raised. Composite wavelength semiconductor diode will cause the amount of stomata flower and sage 2 plants raised.
2, semiconductor diode as light cycle plant, induction lighting picture growing
Specific wavelength semiconductor diode will have an effect on plants flowering time, the standard and lengthof flowering. sure wavelengths of semiconductor diode will increase the amount of flower buds and flowering plants; sure wavelengths of semiconductor diode will scale back flowering response, control the flowering stalk length and is tributary to the assembly of cut flowers and listing. so the regulation may be modulated by thesemiconductor diode and also the sequent growth of flowering plants.
3, semiconductor diode utilized in region analysis ecological life network
Establishment of Controlled Ecological Life network is that the elementary thanks to solve the matter of long-runmanned house life support, the cultivation of upper plants is a very important part of CELSS, and lighting is one among the key.
Based on the special needs of the house setting, source of illumination for house higher plants cultivated sources use should have a high bright potency, light output to suit for plant chemical change and growing, small size, light-weight weight, long life, high safety and dependability record and no environmental pollution options. Compared with cool white fluorescent lamps, air mass metal and metal salt lamps and different lightweightsources, semiconductor diode is additional expeditiously reborn light-weight into picture synthetically active radiation; addition, it’s an extended life, small size, light weight, solid and different characteristics, thus in recent years, it attracts abundant attention within the ground and plant cultivation. Studies have shown thatsemiconductor diode lighting system will offer illumination spectral energy distribution, the potency of light that converse energy to plant required light is 520 times quite the metal salt.