Abstract：To provide theoretical reference and technical parameters for designing locusts′ LED trapping light, optimization of flash light′s frequency and cosine alternating light′s shining cycle parameter for locusts′ phototactic behavior were conducted by LED light source and phototaxis behavior trial equipment with comparison method.The efficiency difference of flash light, cosine alternating and constant light was studied，and the efficiency principle of flash light and cosine alternating light on locusts′ phototaxis behavior was also discussed.The results show that locusts′ phototactic response can be affected by spectrum, shining frequency and cycle,and violet flash light with shining interval of 30 ms has the best efficiency to locusts′ phototactic response. Cosine alternating violet light with shining cycle of 640 ms is superior to flash light and other cosine alternating light for locusts′ phototactic response.The phototactic response of flash violet light with shining interval of 30 ms is inferior to that of cosine alternating volet blue and green flash light with shining cycle of 640 ms. According to the illumination threshold of locusts′ sensitve spectrum,the efficiency range of locusts′ phototactic response can be extended by reasonable combination of cosine alternating light and flash light.
2011, Vol. 32 
