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园艺学报 ›› 2013, Vol. 40 ›› Issue (7): 1369-1374.

• 研究报告 • 上一篇    下一篇

多效唑在桃果实中的残留量评估

张威远,陈锦永*,方金豹,顾 红,赵长竹,林苗苗   

  1. 中国农业科学院郑州果树研究所,中国农业科学院果树生长发育与品质控制重点开放实验室,郑州 450009
  • 收稿日期:2013-03-22 出版日期:2013-07-25 发布日期:2013-07-25
  • 基金资助:

    ‘十一五’国家科技支撑计划项目(2009BADB7B04);中国农业科学院果树生长发育与品质控制重点开放实验室项目

Evaluation on Residue Amount of Paclobutrazol in Peach Fruits

ZHANG Wei-yuan,CHEN Jin-yong*,FANG Jin-bao,GU Hong,ZHAO Chang-zhu,and LIN Miao-miao   

  1. Zhengzhou Fruit Research Institute,Key Laboratory for Fruit Tree Growth,Development and Quality Control,Chinese Academy of Agricultural Sciences,Zhengzhou 450009,China
  • Received:2013-03-22 Online:2013-07-25 Published:2013-07-25

摘要: 为评估多效唑在桃园中使用的安全性,于2010—2011 年分别以3 个普通桃品种为试材,使用不同剂量(0.0375 ~ 0.225 g · m-2)、不同浓度(500 ~ 1 500 mg · L-1)多效唑进行土壤施入或叶面喷施,利用气相色谱—三重四级杆串联质谱仪(GC–MS–MS)对成熟桃果实中的多效唑残留量进行了测定。结果表明,仅在大棚桃试验中的1 个较高浓度叶面喷施处理(1 250 mg · L-1 喷施2 次)的桃果实中多效唑残留量超过0.5 mg · kg-1,其它处理的残留量均小于0.5 mg · kg-1,其中大部分土施处理的残留量低于0.05mg · kg-1。如果以最大残留量 ≤ 0.5 mg · kg-1(欧盟现行桃残留限量标准)为标准,按树冠投影面积,土壤施入0.0375 ~ 0.225 g · m-2 等不同剂量,桃果实中多效唑残留量不超标;在露地条件下叶面喷施浓度不超过1 500 mg · L-1,在大棚条件下浓度不超过1 000 mg · L-1,喷施次数不多于2 次,果实中多效唑残留量也不超标。

关键词: 桃, 多效唑, 残留量

Abstract: In order to evaluate the safety of paclobutrazol applied in peach orchards,the terminal residues in mature fruits of 3 peach varieties with different dosage by soil application(0.0375–0.225g · m-2)or different consentration by foliar spraying of paclobutrazol were investigated by GC–MS–MS in 2010 and 2011. The results showed that only one treatment with higher foliar spraying concentration(1 250 mg · L-1 sprayed 2 times)in green-house peach experiment led to the residue amount in mature peach fruits over 0.5 mg · kg-1,the residue amount of another treatment was less than 0.5 mg · kg-1,most treatments of soil application was even below 0.05 mg · kg-1. If according to MRL ≤ 0.5 mg · kg-1 of paclobutrazol in peach(current MRL of EU),based on canopy projection area,different dosage by soil application(0.0375–0.225 g · m-2),the residues in mature fruits do not exceed the allowed figure;Paclobutrazol applied by canopy spraying with no higher than 1 500 mg · L-1 in open orchard or 1 000mg · L-1 in green-house peach,and no more than 2 times,the residues in mature fruits do not exceed the standard,either.

Key words: peach, paclobutrazol, residue

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