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据悉,近年来,在一些省区抗虫棉的种植面积迅速扩张,如有的县市占到了棉田面积的90%左右。抗虫棉这几年推广如此之快,是因为老百姓尝到了种抗虫棉的甜头。前些年由于棉铃虫大爆发,棉农为防治棉铃虫,一季棉花要打药二三十次,还经常发生中毒现象。而抗虫棉由于能有效防治棉铃虫,棉农打药次数大大减少,666.7米~2地能节省成本100多元。但专家却不无忧虑地指出,目前这种盲目地大面积引种抗虫棉,其实潜伏着很大的隐患,抗虫棉应
It is reported that in recent years, the planting area of insect-resistant cotton in some provinces and autonomous regions has rapidly expanded, and some counties and cities account for about 90% of the total area of cotton fields. BOP in recent years to promote such a fast, because the people tasted the sweetness of the kind of insect-resistant cotton. A few years ago due to the outbreak of cotton bollworm, cotton farmers to control cotton bollworm, a quarter of cotton to fight drug twenty or thirty times, but also often poisoning. As the cotton insect-resistant cotton bollworm can effectively prevent the number of cotton farmers greatly reduced fight, 666.7 m ~ 2 to save costs more than 100 yuan. However, experts have pointed out with no worries that the current blind introduction of insect-resistant cotton in large areas actually lurks a great potential. Insect-resistant cotton should