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Position: Home > Articles > Residue Test and Evaluation of Paclobutrazol in Walnut Kernel Shandong Agricultural Sciences 2020 (2) 137-139

多效唑在核桃仁中的残留测试评估

作  者:
张美勇;徐颖
单  位:
山东省果树研究所
关键词:
核桃仁;多效唑;残留量
摘  要:
为了解核桃树使用多效唑后核桃仁中的残留量,评估多效唑在核桃园中使用的安全性,于2019年分别以普通核桃品种‘香玲’和‘元丰’为试材,使用不同剂量(0. 8~1. 6 g·m~(-2))、不同浓度(1 000~2 000mg·L~(-1))多效唑进行土壤施入或叶面喷施,利用气相色谱-质谱法(GB 23200. 8—2016)对多效唑在核桃仁中的最终残留量进行测定。结果表明,叶面喷施和土施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. 01 mg·kg~(-1),叶面喷施处理的残留量低于0. 02 mg·kg~(-1)。我国目前还没有核桃仁多效唑残留限量标准,若以最大残留量≤0. 5 mg·kg~(-1)(我国现行花生仁残留限量标准)为标准,土壤施入多效唑0. 8~1. 6 g·m~(-2)或叶面喷施多效唑浓度不超过2 000 mg·L~(-1),喷施不多于3次,核桃仁中多效唑残留量不超标。
译  名:
Residue Test and Evaluation of Paclobutrazol in Walnut Kernel
作  者:
Zhang Meiyong;Xu Ying;Shandong Institute of Pomology;
关键词:
Walnut kernel;;Paclobutrazol;;Residue
摘  要:
In order to understand the residue of paclobutrazol in walnut kernels and evaluate the safety of paclobutrazol on walnut,two walnut cultivars ‘Xiangling'and ‘Yuanfeng'were used as materials,and different dosages(0. 8 ~ 1. 6 g·m~(-2)) and concentrations(1 000 ~ 2 000 mg·L~(-1)) of paclobutrazol were set for soil application and foliar spraying in 2019. The residue of paclobutrazol in walnut kernels was determined by GC-MS. The results showed that the residual amount of foliar and soil application was less than 0. 5 mg·kg~(-1),and most of the soil and foliar treatments were less than 0. 01 and 0. 02 mg·kg~(-1) respectively. There is not the residue limit standard for paclobutrazol in walnut currently in China. If using the maximum residue limit ≤0. 5 mg·kg~(-1)(the current standard of peanut residue in China) as standard,the residual amount of paclobutrazol in walnut kernels did not exceed the standard when soil application at 0. 8 ~ 1. 6 g·m~(-2) or foliar application at most 2 000 mg·L~(-1) for no more than 3 times in open field condition.

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