The influence of high power LED to aquatic animals and plants grow

In recent years, our country leisure, ornamental fishery development momentum, has become a new bright spot in the development of fisheries, fish is 'you' into the ordinary people family [ 1, 2. The leading role of ecological aquarium is fish, seaweed, visual appreciation is its main function. Aquarium lighting system plays a decisive role, the LED is considered to be the future main, ideal artificial aquatic animals and plants to fill light source, high brightness, wave band narrow, energy saving, environmental protection, long service life, etc. Therefore, carried out the monochrome leds experimental study of effects of aquatic animals and plants, the LED application in aquarium lighting principles and key technical parameters.

experimental section 1. 1 material and instrument

aquatic plants ( Money grass, water hyacinth, mushrooms, grass, moss, tiger ears and the red red butterfly) Aquatic animals ( Tiger fish, red arrows, black Mary) , algal group; Samples taken from the hebei university and market. The experimental light conditions provided by this topic research of high power LED light source.

领导( 5 w red, blue, white, green, yellow, purple, red, blue) ; A beaker and petri dishes, thermometer; Homemade water cylinder and tank; Microcomputer time controller, etc. ; The main instruments have PMS - 50 spectrum analysis system, LED626 distribution photometer, TES - 1332 a light meter, electronic balance, NJ2 1 is type metallographic microscope and so on.

　　1.

1 2 experimental method. 2. 1 single color LED light effects on aquatic plants grow

test set of red, white, green, yellow, blue, red, blue and violet light 7 kinds of light conditions, the light source spectral characteristics are shown in table 1.

will grow close, form similar plants of aquatic plants are divided into 7 groups, each group of four, Money grass, water hyacinth, moss red leaves, mushrooms, grass) , each of the 10 strains, partial shipments in 21 beaker ( In the beaker into the same amount of the same quality of distilled water) ; 7 patients respectively in this study the design of R, B, Y, G, W, R + B, UV light seven kinds of light conditions, and no natural light, the mutual influence between the light source, light source suspension height is 10 cm, with microcomputer timer Settings illumination time, time is: every day 6:00 to 8:00; 10∶ 00 ～ 12∶ 00; 14∶ 00 ～ 16∶ 00; 18∶ 00 ～20∶ 00。

observation indexes: determination of mushrooms, grass leaf area, plant height, leaf number and number of lateral root. Determination of desmodium new lateral root number and plant height, statistical analysis of plant height growth in absolute and relative growth; Determination of moss plant height, the section number and the number of lateral root of the maple leaf; Determination of water hyacinth stem diameter, leaf area and the new leaf number.

　　1. 2. 2 LED light source combination with aquatic plant growth under the fluorescent lamp is aquatic plants tiger ears and red butterfly can be divided into two group, each group of 10 trees in two weeds in cylinder; With 'R + B' light and fluorescent light processing plants, processing way with ( 1) ; Weekly record every branch plant height, leaf number, the number of lateral bud and the number of lateral root.