Five diffient wavelengths of LED light, blue,green, yellow, red, and white were set to study the photo-taxis of Laodelphax striatellus and the reponduction affected by monochromatic light with the maximum phototaxis. The pho-totaxis L. striatellus was the greatest ( 31. 85%) in response to blue LED light, followed by green ( 19. 10%) , yellow (10. 65%), white(10. 55%), and red LED light took the lowest(4. 35%). The phototaxis of L. striatellus to different wavelengths of LED light had no significant difference between male and female adult. The maximum phototaxis of L. stria-tellus to blue, green,white and yellow light occurred at the first emergency day, while to red, it was on the fourth emergency day. The phototaxis of L. striatellus to red LED light did not show significant change during dark adapta-tion. The phototaxis of L. striatellus subjected to 80-min dark adaptation was higher to blue, green, yellow and white LED lights than those subjected to 20-, 40-, 60-, and 80-min dark adaptation. The fecundity, egg hatching rate and duration of egg laying of L. striatellus to blue were significantly lower than that to darkness. Therefore blue light is the opti-mal wavelength and the first emergency day is the best time to kill L. Striatellus. In addition, blue LED light lowered the fecundity of L. striatellus.%本研究选择5种波长LED光：蓝光(465 nm)、绿光(520 nm)、黄光(590 nm)、红光(624 nm)、白光(复合光)，通过趋性行为反应试验，研究灰飞虱对不同波长LED光的趋性以及趋光率最大单色光对其繁殖的影响。结果显示，在选取的5种 LED 光中，灰飞虱趋光率由大到小依次为蓝光(31.85%)、绿光(19.10%)、黄光(10.65%)、白光(10.55%)、红光(4.35%)，对蓝光的趋光率显著大于其他4种光；灰飞虱雌、雄成虫对5种波长LED光的趋光性无差异；灰飞虱对蓝光、绿光、白光、黄光趋光率最高值均出现在第1羽化日龄，对红光趋光率最高值出现在第4羽化日龄；不同暗适应时间下灰飞虱对红光的趋光率无显著差异，暗适应80 min后灰飞虱对其他4种波长LED光的趋光率显著低于其他暗适应时间的趋光率；蓝光处理后灰飞虱产卵量、产卵历期和卵孵化率显著低于暗处理组。表明蓝光是诱杀灰飞虱的最佳波长，第1羽化日龄是诱杀灰飞虱的最佳时间，同时蓝光对灰飞虱繁殖有影响。
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