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采用植株浸渍处理法测定了不同龄期的稻黑尾叶蝉若虫分别对吡虫啉、齐墩螨素和噻嗪酮的敏感性。生测结果表明 ,黑尾叶蝉对吡虫啉、齐墩螨素和噻嗪酮的敏感性随着虫龄的增大而降低 ,其LC5 0 值从小到大的顺序为 1～ 2龄 >3～ 4龄 >5龄。
The sensitivity of imidacloprid, abamectin and buprofezin to cicada nymphs of rice at different growth stages was determined by plant immersion treatment. The results of the bioassay showed that the sensitivity of the rice leafhopper to imidacloprid, abamectin and buprofezin decreased with the increase of the worm age. The order of the LC50 values was 1 ~ 2 years old> 3 ~ 4 years old> 5 years old.