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１９９９年在棉花生长期间，通过试验对抗虫杂交棉的增产潜力及其经济效益进行了分析和研究，并提出了抗虫杂交棉的治虫原则，以期为生产上最大限度地提高抗虫杂交棉的经济效益提供科学的理论依据。１材料和方法供试材料：棉研所自育的２个转Ｂｔ基因抗虫杂交棉组合中抗杂９９
During the cotton growing period in 1999, the potential yield and economic benefits of insect-resistant hybrid cotton were analyzed and studied. The principle of insect-resistant hybrid cotton was put forward in order to maximize the production of insect-resistant hybrid cotton Provide the scientific basis for the economic benefits. 1 Materials and methods Test materials: Cotton Institute of self-bred 2 transgenic Bt hybrid cotton resistant to hybrid 99