论文部分内容阅读
美国农业研究所(ARS)的科学家们指出,将自然存在的某种具有生物控制功能的病毒混入灌溉水中,这种病毒可以杀死害虫,减轻对农作物玉米和棉花的为害。 去年,ARS曾试验将混有核多角体病病毒的灌溉水装入悬挂的喷灌机中,灌溉玉米。结果表明,随着测定时间和施用剂量的变化,田间玉米螟幼虫的死亡率为25～100％。由于农民可以将灌水和治虫结合在一起,因此这种利用病毒治虫的方法更加经
Scientists at the American Academy of Agricultural Sciences (ARS) point out that incorporating naturally occurring biologically-controlled viruses into irrigation water can kill pests and reduce damage to crop corn and cotton. Last year, ARS had experimented with loading irrigation water mixed with nuclear polyhedrosis virus onto a suspended sprinkler to irrigate corn. The results showed that the mortality of field corn borer larvae was 25-100% with the change of time and dosage. Since farmers can combine irrigation and pest control, this method of using the virus to pest control is more