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１９９６／９７和１９９７／９８两年度转Ｂｔ基因抗虫棉的生产情况调查表明，（１）抗虫棉的平均喷药次数两季度不同，１９９６／９７年度为５．５次，１９９７／９８年度为６次；两季度抗虫棉和常规棉的喷药总数类似。（２）比较了两季度对主要害虫的喷药次数的差异，主...
Surveys on the production of Bt cotton in 1996/97 and 1997/98 show that (1) the average number of doses of Bt cotton varies from quarter to quarter, from 1996/97 to 5.5 and from 1997/98 6 times; two quarters of cotton and conventional cotton spray similar to the total number. (2) Comparison of the two quarters of the main pests spraying times the difference, the main ...