| 甲磺隆等4种磺酰脲类除草剂残留量生物测定方法的研究 |
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| 引用本文： | 李,戴育明,黄循一.甲磺隆等4种磺酰脲类除草剂残留量生物测定方法的研究[J].上海交通大学学报(农业科学版),1995(2). |
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| 作者姓名： | 李 戴育明 黄循一 |
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| 作者单位： | 上海市闵行区环境监测一站，上海农学院园林环境科学系 |
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| 摘 要： | 油菜根长对４种磺酰脲类除草剂反应的标准曲线分别为：甲磺隆ｙ＝１．７９２－０．２２４ｘ；绿磺隆ｙ＝１．９０７－０．２０３ｘ；吡嘧磺隆ｙ＝１．８１２－０．２２１ｘ；苄嘧磺隆ｙ＝１．９３７－０．１９９ｘ。其ＬＣ５０值分别为０．１９、０．５８、０．２４、０．８２ｎｇ／ｇ，可作为检测其残留量的下限。５．１２ｎｇ／ｇ和２０．４８ｎｇ／ｇ两种浓度的甲磺隆在室内土壤中的半衰期分别为３１．７ｄ和３８．２ｄ，９０％的消解期分别为９７．４ｄ和１２２．０ｄ。
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| 关 键 词： | 生物测定，甲磺隆，残留量 |
A STUDY ON BIOASSAY METHOD FOR THE RESIDUE OF METSULFURON-METHYL ETC. FOUR KINDS OF SULFONYLUREA HERBICIDES IN SOIL |
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| Li Zheng,Dai Yuming,Huang Xunyi.A STUDY ON BIOASSAY METHOD FOR THE RESIDUE OF METSULFURON-METHYL ETC. FOUR KINDS OF SULFONYLUREA HERBICIDES IN SOIL[J].Journal of Shanghai Jiaotong University (Agricultural Science),1995(2). |
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| Authors: | Li Zheng Dai Yuming Huang Xunyi |
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| Abstract: | The standard curves of four kinds of sulfonylurea herbicides on the length of rape roots were:y= 1. 792 - 0. 224x (metsulfuron - methyl ), y = 1. 907 - 0. 203x (chlorsulfuron ), y = 1. 812 - 0. 22lx (pyrazosulfurou -ethyl) and y= 1. 937 - 0. 199x (bensulfuron -methyl ). Their respective value of LC50 was 0. 19,0. 58,0. 24 and 0. 82ng/g. They can be used to determine lower limit of the four kinds of herbicides residues in soil. The half-life of two kinds of metsulfuron-methyl concerntrations (5. 12ng/g and 20. 48ng/g) in door soils was 31. 7 days and 38. 2 days respectively. Their degradation date of 90% dosage was 97. 4 days and 122. 0 days respectively. |
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| Keywords: | Bioassay Metsulfuron-methyl Residue |
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