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中国农学通报

中国农学通报 ›› 2012, Vol. 28 ›› Issue (31): 271-276.

• 林学 园艺 园林 • 上一篇    下一篇

螺螨酯在柑橘和土壤中残留及消解动态

谢莉 杨仁斌 傅强 肖少怀 柳王荣   

  • 收稿日期:2012-05-18 修回日期:2012-07-09 出版日期:2012-11-05 发布日期:2012-11-05
  • 基金资助:

    农业部农药残留项目

Residue and Dissipation Dynamics of Spirodiclofen in Orange and Soil

  • Received:2012-05-18 Revised:2012-07-09 Online:2012-11-05 Published:2012-11-05

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摘要：

为了评价螺螨酯在柑橘和土壤中的安全性，建立其在柑橘中的使用规范，于2010、2011年在长沙、杭州两地进行田间试验，研究螺螨酯在柑橘和土壤中的最终残留和消解动态。结果表明：螺螨酯在柑橘和土壤中的添加回收率为82.2%~110%，相对标准偏差为2.55%~9.84%；螺螨酯在柑橘和土壤中的最低检出限均为0.0035 mg/kg。螺螨酯在柑橘和土壤中的消解均符合一级动力学方程，消解半衰期分别为5.18~8.49天，5.19~7.85天。螺螨酯最终残留在橘肉、橘皮和土壤中的质量分数分别是未检出(<0.0035 mg/kg)，未检出(<0.0035 mg/kg)~0.1978 mg/kg，未检出(<0.0035 mg/kg)~0.2401 mg/kg，均低于欧盟规定的在柑橘上的最大残留限量0.5 mg/kg。参考欧盟制定的柑橘中螺螨酯的最大残留限量(0.5 mg/kg)，按推荐施药剂量和次数施用螺螨酯，防治柑橘红蜘蛛，施药后20天以后收获柑橘，食用是安全。

关键词: 色泽, 色泽

Abstract:

In order to evaluate environmental safety of spirodiclofen in orange and soil, establish the use standard in orange, the field trials on the dissipation and final residue of spirodiclofen were carried out in Changsha, Hangzhou during 2010-2011. The results showed that, the average recoveries of spirodiclofen from orange and soil sample at three spiked levels of 0.05 mg/kg, 0.5 mg/kg and 1 mg/kg, ranged from 82.2% to 110% with variation coefficient from 2.55% to 9.84%. Degradation dynamics of spirodiclofen based on first-order reaction dynamic equations in orange and soil, the half-lives of spirodiclofen were 3.43-8.33 days, 6.35-10.65 days. The final residue of spirodiclofen in peel, pulp and soil were not detected (<0.0035 mg/kg), not detected (<0.0035 mg/kg)-0.1978 mg/kg, not detected (<0.0035 mg/kg)-0.2401 mg/kg, lower than the provisions of maximum residue limit of 0.5 mg/kg in EU. According to application dosage and times of spirodiclofen for reference the maximum residue limits (0.5 mg/kg) by EU, orange was safe to eat after spirodiclofen being sprayed after 20 days.