【作者】 林金科； 李秀峰； 林小端； 涂良剑；

【Author】 LIN Jinke, LI Xiufeng, LIN Xiaoduan, TU Liangjian (Department of Tea Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China)

【机构】 福建农林大学茶学系；

【摘要】 为评价4种农药在乌龙茶品种茶树新梢上的残留水平及安全性。笔者以铁观音和武夷肉桂两个典型乌龙茶品种为材料,利用气相色谱分析技术,研究4种化学农药(联苯菊酯、甲氰菊酯、氯氰菊酯和优乐得)在茶树新梢上残留的自然降解动态。联苯菊酯、甲氰菊酯、氯氰菊酯和优乐得在铁观音新梢中的半衰期分别为6d、5d、4d和4d,在武夷肉桂新梢中分别为7d、4d、3d和5d。建议在乌龙茶的出口基地上,喷施联苯菊酯和氯氰菊酯后的安全间隔期分别为13d和24d。更多还原

【Abstract】 The residue and security of 4 chemical pesticides on tea plant (Camellia sinensis (L.) O.Kuntze) new shoot suitable to oolong were desirous to be estimated. Utilizing 2 cultivars (Tieguanyin and Wuyirougui) suitable to oolong tea as materials, the natural degradation dynamics of 4 chemical pesticides (bifenthrin, fenpropathrin, cypermethrin and buprofezin) on tea plant new shoots were studied by gas chromatography. The results showed that half-lives of 4 pesticides in Tieguanyin tea plant new shoots were 6d, 5d, 4d and 4d, respectively. In Wuyirougui, 7d, 4d, 3d and 5d, respectively. It was suggested that the safety periods of bifenthrin and cypermethrin in oolong tea export base were 13d and 24d after spraying, respectively.更多还原