论文部分内容阅读
河北省棉区历年来棉蚜为害严重,防治蚜害已成为各地棉花增产的主要措施,1956年开始在各重点棉区推广使用内吸磷等有机药剂治蚜,几年来在防蚜保产上起到了显著作用,深受群众的欢迎。但从1963年起在冀南、冀东老棉区的重点社、队的群众反映内吸磷农药治蚜效果逐渐减退。为澄清这一问题,我们在1963—1964年于省内各棉区进行了调查测定,同时结合各地田间治蚜的药效比较,初步得出各地棉蚜对内吸磷反应药效不同的原因,除部分地区在喷治技术上粗放外,主要是由于连续多年使用单一品种防治,使棉蚜对内吸磷产生了较强的抗药性所致,现将调查结果整理于后。
Cotton aphid over the years in Hebei Province over the years serious damage prevention and control of aphids have become the major measures to increase cotton production throughout the region began in 1956 to promote the use of phosphorus and other organic drugs within the treatment of aphids phosphorus, Played a significant role, welcomed by the masses. However, since 1963, in the key areas of Jinan and Jidong old cotton areas, the masses in the team have gradually reduced the effect of phosphorus insecticides in controlling aphids. In order to clarify this problem, we conducted a survey in each cotton area in the province from 1963 to 1964. At the same time, we compared the efficacy of aphids in various fields to find out the reasons for the different effects , In addition to some areas in the spraying technique extensive, mainly due to continuous use of a single species of prevention and control for many years, so that cotton aphid phosphorus absorption within the resulting strong resistance, the findings are now sorted out.