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一个偶然的机会,合肥市两名小学五年级学生马新元和王闻捷,看到报纸上千人再战“一枝黄花”的新闻报道,难对付的“一枝黄花”引起了两人浓厚的兴趣。他们了解到,“一枝黄花”目前还没有天敌,虫子不吃它。“能不能将一枝黄花的汁液喷洒到蔬菜上,来驱赶或伤害虫子,从而保护蔬菜呢?”在“泡”了6个月的实验室后,马新元和王闻捷终于成功提取到汁液,找到了灭虫的最佳浓度。他们发现,这种“一枝黄花”杀虫药杀虫率可达95%,而且对人畜无害。凭借这一论文,2009年4月底,两名小学生捧回了全国青少年科技创新大赛的金牌。
By chance, two primary primary school students in Hefei, Ma Xinyuan and Wang Wenjie, saw news reports that thousands of people in the newspaper were battling again and “Solidago”, and the “goldenrod” of the “ interest. They learned that ”Goldenrod “ There is no natural enemies, insects do not eat it. ”Can we spray the yellow flower juice onto the vegetables to drive or injure the insects so as to protect the vegetables?“ After a 6-month lab, Ma Xinyuan and Wang Wenjie finally succeeded in extracting the juice , Found the best concentration of pest control. They found that this ”Solidago" insecticide insecticide rates up to 95%, and harmless to humans and animals. With this paper, the end of April 2009, two pupils took home the national youth science and technology innovation contest gold medal.