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利用一些昆虫具有趋光性的特点,我国农林业使用灯光诱扑害虫已有悠久历史,采用的光源从火把、油灯、汽灯到现在的黑光灯。黑光灯是一种能辐射出3600A紫外线的低气压汞气荧光灯。近代科学的发展,研究了昆虫的视觉神径,发现多种农林业害虫对不同波长的光敏感程度不同。这是由于这些昆虫眼睛的网膜上有一种色素,这种色素只吸收一种特殊波长的光,然后引起光反应,刺激视觉神经,通过神经系统影响运动器官,从而引起足或翅的运动,飞向光源。据有关资料报道;昆虫对频率低的光线,感觉是麻木的,而对频率高的光线特别敏感。试验证明,许多害虫的视觉神经对波长在3300～4000A的紫外线特别敏
Utilizing the characteristics of some insects having phototaxis, our country’s agriculture and forestry industry has a long history of using light to induce pests. The light sources used are light torches, oil lamps and steam lamps to the present black light. Black light is a low pressure mercury vapor fluorescent lamp that emits 3600A UV light. The development of modern science, the study of the visual path of insects, found that a variety of agricultural and forestry pests to different wavelengths of light-sensitive degree. This is because these insects have a pigment on the retina of the eye that absorbs only a specific wavelength of light and then causes a photoreaction that stimulates the optic nerve and affects the moving organs through the nervous system to cause foot or wing movements, Fly to the light source. According to the information reported; insects on the low frequency of light, the feeling is numb, while the high frequency of light is particularly sensitive. Experiments show that many pests of the visual nerve wavelength of 3300 ~ 4000A UV special sensitive