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棉花是关系到国计民生的重要物质,因此棉花的种植历来是各级政府重视的种植项目之一。同时棉花又属于经济作物,在种植业中占有重要地位。近年来由于棉花病虫害的防治费用在棉花种植业中占有较大比重,导致种植常规棉花的经济效益滑坡。要提高种棉的经济效益,选种抗虫棉是一条可行之路。抗虫棉是由美国岱字棉公司利用岱字、爱字与岱字50杂交,1987年与孟山都公司合作利用现代高科技手段与生物技术育成。抗虫棉可产生内源毒素,对危害棉花的棉铃虫等害虫具有毒杀作用,使用于防治棉花病虫害的费用大大降低。国内近几年也推出了一批抗虫棉新品种,均受到广大农民的欢迎。1 抗虫棉特性笔者根据湖北地区环境条件,结合几年来推广抗虫棉的经验和体会,认为附表中列出的一批品种在湖北反映较好。如国抗97-1原种、美棉33B 棉种在鄂东反应最好等。
Cotton is an important material that affects the national economy and people’s livelihood. Therefore, the cultivation of cotton has always been one of the planting projects that the governments at all levels attach importance to. At the same time, cotton is another economic crop and occupies an important position in the farming industry. In recent years, due to the control costs of cotton pests and diseases occupy a large proportion of the cotton planting industry, resulting in the economic benefits of planting conventional cotton landslide. To improve the economic benefits of cotton, cotton seed selection is a viable option. Insect-resistant cotton by the United States Dai word cotton companies use Dai word, word love and Dai word 50 hybrid, Monsanto company in 1987 with the use of modern high-tech means and biotechnology bred. Bt cotton can produce endogenous toxins, cotton bollworm and other pests that endanger the cotton has a toxic effect, the cost of preventing and curing cotton pests and diseases greatly reduced. In recent years, a batch of new varieties of insect-resistant cotton have also been launched in China, both of which are welcomed by farmers. 1 insect-resistant cotton characteristics According to environmental conditions in Hubei Province, combined with the past few years to promote the experience and experience of insect-resistant cotton, that a list of varieties listed in Hubei reflected better. Such as the national anti-97-1 original species, the United States Cotton 33B cotton species in the eastern part of the best response.