中文摘要：

建立超高效液相色谱（UPLC）测定吡虫啉含量的分析方法,并测定经竹腔注射后其在雷竹体中的分布。结果表明,竹腔注药后,吡虫啉在雷竹体内向上具体有较好的传导、分布性能,但向下不传导;竹腔注药后第8 d竹叶中吡虫啉含量达到最大值;吡虫啉在竹子体内残留期较长,注药后65 d,竹叶中吡虫啉含量为0.237μg·g-1,注药后89 d时,竹叶中依然可检测到吡虫啉存在,但含量小于0.05μg·g-1。吡虫啉在竹子体内不向下传导特性证明该农药竹腔注射不会对竹笋的品质产生影响。

英文摘要：

Distribution of imidacloprid in Phyllostachys praecox after cavity injection was determined by ultra performance liquid chromatography（UPLC）.The results showed that imidacloprid could be transported upward rapidly,but not downward.The concentrations of imidacloprid in leaves reached the highest level on the 8thd after injection.Imidacloprid remained in bamboo for a long period.The concentrations of imidacloprid in leaves were 0.178 on the 60th d,and were bellow 0.05 mg·kg-1 on the 80th d after injection.It is concluded that the application of imidacloprid by culm lumen injection to control pests will not contaminate bamboo shoots.