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我国棉区,危害棉花的害虫达300余种,其中较重要的有30种左右.以长江流域和黄河流域两大棉区而言,造成棉花显著减产和品质低劣的主要害虫有棉红铃虫、棉铃虫、棉蚜和棉叶螨等4种(类),近几年棉蓟马和棉造桥虫的危害又有增加趋势.农田中农药的投入、害虫的抗药性、农药对棉田生态系统的恶劣影响、环境污染以及治虫费用增加等一系列问题,已经引起了各方面的关注.因此,在害虫的综合治理环节中,培育抗虫品种尤为重要.我国棉花抗虫育种始于40年代,但直至70年代末80年代初以来才开展一些较为系统的研究工作.1983年以后,此项研究纳入国家重点攻关项目.几年来,我国的科研工作者在收集抗源、抗源筛选与鉴定、抗性品系选育等方面取得了较快进展.然而,与国外相比,在广度
In the cotton area of our country, there are more than 300 kinds of pests that endanger the cotton, among which the more important ones are about 30. Taking the two large cotton areas of the Yangtze River and the Yellow River, the main pests causing cotton significant yield loss and poor quality are cotton bollworm , Cotton bollworm, cotton aphid and cotton spider mite four kinds (classes), in recent years cotton thrips and cotton bridge parasite hazards have an increasing trend of farmland pesticide inputs, pest resistance, pesticides on the cotton field ecology A series of problems such as the system’s bad influence, the environment pollution and the increase of pest control cost have caused all kinds of concerns, therefore, it is very important to cultivate pest-resistant varieties in the comprehensive management of pests.China’s insect- , But some systematic studies were not conducted until the late 1970s and early 1980s, and the research was included in the national key research projects after 1983. Over the past few years, researchers in China have been collecting antigens and antigens for screening and identification , Resistance strain selection and other aspects have made rapid progress.However, compared with foreign countries, in the breadth