棉花盛花至结铃初期,受红铃虫等为害的花颇多;脱落的花、铃中,也有部分红铃虫、金鋼鑽等幼虫。为了减轻为害,过去曾提倡在此时夹或刺杀花中幼虫和拾毁落花落铃。这两种人工防治措施作用如何?值不值得提倡?我们于1964年7—8月在湖南的集中和分散棉区实习时,作过一些调查。兹将结果整理于后。 Flower cotton flowers to the beginning of the bell, a lot of flowers damaged by pink bollworm; shed flowers, bell, there are some pink bollworm, diamond and other larvae. In order to alleviate the harm, in the past has been advocated at this time to clamp or assassination flower larvae and pick up the falling bells. What are the effects of these two kinds of artificial control measures? Not worth promoting? We conducted some surveys during the internship in concentrated and scattered cotton areas in Hunan Province in July-August 1964. I will put the results in the post.