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为研究半导体激光对水果的主要虫害———果蝇(drosophila melanogaster)的控制效果,采用响应曲面法设计,实验研究了激光功率和照射时间对果蝇的生物学效应。结果表明,用波长为650 nm的半导体激光照射果蝇幼虫,在功率60 mW,照射1282 s条件下,果蝇幼虫的致死率可达到99%以上,且体重降低、羽化延续时间缩短,激光对果蝇幼虫具有较强生物学致死效应。但当功率低于40 mW时,激光对果蝇产生激励作用,促使果蝇的生长发育。继续用原剂量照射第三代果蝇的幼虫,对比发现在连续多代照射后,果蝇后代并没有产生对激光的抗逆性。为半导体激光在水果病虫害控制中的应用提供了实验依据。
In order to study the control effect of semiconductor laser on drosophila melanogaster, the response surface methodology was used to study the biological effects of laser power and irradiation time on fruit flies. The results showed that the killing rate of Drosophila larvae was over 99% with the power of 60 mW and 1282 s by irradiating Drosophila larvae with the wavelength of 650 nm. The weight loss and the extension of eclosion duration were shortened. Drosophila larvae have a strong biological lethal effect. However, when the power is below 40 mW, the laser stimulates the fruit fly and promotes the growth and development of the fruit fly. Continue to use the original dose of third-generation larvae of fruit flies, compared found in successive generations of irradiation, the fruit flies offspring did not produce laser resistance. It provides the experimental basis for the application of semiconductor laser in the control of fruit pests and diseases.