论文部分内容阅读
目的:为研究半导体激光对蝗虫的杀灭控制效果方法:将实验虫体按龄期分为照射实验组和对照组,采用波长808nm、功率2W的半导体连续单管激光器对东亚飞蝗成虫和幼虫头部、翅根、腹部位置;Ⅰ-Ⅲ龄期和Ⅳ-Ⅵ龄期的亚洲车蝗幼虫头部进行不同时间、不同距离的照射实验。分别观察照后第三天东亚飞蝗的致死率;照后2小时、照后2天和照后3天亚洲车蝗的致死率。结果:统计结果表明相同辐照条件下,激光对蝗虫头部具有较强的生物学致死效应;随着照射后时间的延长蝗虫的致死率增加;蝗蝻较成虫容易致死,且蝗虫龄期越小致死率越高。随着激光功率密度和照射时间的增加,蝗虫致死率呈现增长趋势,且功率密度对蝗虫的致死效果起决定性作用。结论:近红外激光辐照蝗虫头部有较好的致死作用,且龄期越小致死效果越好。
Objective: To study the killing effect of semiconductor laser on locusts. Methods: The experimental parasites were divided into irradiation experimental group and control group according to their age. The adults and larvae of Locusta migratoria manilensis were irradiated by continuous single-tube laser with wavelength of 808nm and power of 2W Head, wing root and abdomen. The larvae of larvae of Asian locust in Ⅰ-Ⅲ and Ⅳ-Ⅵ instars were exposed to different time and different distances. The lethal rate of Locusta migratoria was observed on the third day after irradiation; the lethality of Locusta migratoria 2 hours after irradiation, 2 days after irradiation and 3 days after irradiation. Results: The results show that under the same irradiation conditions, the laser has a strong biological lethal effect on the locust head; the lethality of locusts increases with the prolongation of irradiation time; locusts are more likely to die than adults and the locust age is smaller The higher the fatality rate. With the increase of laser power density and irradiation time, the lethal rate of locusts showed an increasing trend, and the power density played a decisive role in the lethal effect of locusts. Conclusion: The near infrared laser irradiates the locust head has a good lethal effect, and the smaller the age, the better the lethal effect.