第 41 卷第 4 期 |  | Vol. 41 No. 4 | 2011 年 8 月 | Aug 2011 |
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所屬欄目:分析與測試
西瑪津在甘蔗及土壤中的殘留消解動(dòng)態(tài) |
李素平1,肖 怡2,劉雄倫1,李建國2
(1. 湖南農業(yè)大學(xué) 農學(xué)院,湖南 長(cháng)沙 410128;2. 湖南省農藥檢定所,湖南 長(cháng)沙 410005) |
摘 要:為了探明西瑪津使用后在甘蔗及其土壤中的殘留降解規律,采用氣相色譜法研究了西瑪津90%水分散粒劑在甘蔗及其土壤中的殘留消解降解動(dòng)態(tài)和最終殘留實(shí)驗。結果表明:西瑪津在甘蔗和土壤中的降解動(dòng)態(tài)方程分別為Ct=19.157e-0.058 7t和Ct=1.689 8e-0.036t,半衰期分別為11.8 d和19.3 d;以1 647 g a.i./hm2和2 470.5 g a.i./hm2的劑量在甘蔗田進(jìn)行噴霧處理,收獲期甘蔗和土壤中的最終殘留量分別小于0.01 mg/kg和0.02 mg/kg。 |
關(guān)鍵詞:西瑪津;甘蔗;殘留動(dòng)態(tài);消解解 |
中圖分類(lèi)號:S482.4 文獻標識碼:A 文章編號:1009-9212(2011)04-0066-04 |
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Dissipation of Simazine Residue in Sugarcane and Soil Residue and Degradation of Simazine in Sugarcane and Soil |
LI Su-ping1,XIAO Yi2,LIU Xiong-lun1,LI Jian-guo2
(1. College of Agronomy,Hunan Agricultural University,Changsha 410128,China;2. Hunan Institute for the Control of Agrochemicals,Changsha 410005,China) |
Abstract:A field experiment was conducted to reveal residue dynamics of simazine 90% water dispersible granules(WDG)in sugarcane field. The results showed that the degradation dynamic equation in surgarcane plant and soil was Ct=19.157e-0.058 7t and Ct=1.689 8e-0.036t,respectively,and the half-life was 11.8 d and 19.3 d,respectively. The final residue of simazine was low than 0.01 mg/kg and 0.02 mg/kg,respectively,in sugarcane plant and soil when applied at the rate of 647 g a.i./hm2 and 2 470.5 g a.i./hm2,indicating that it shuld be safe to the environment and human health. |
Key words:simazine;sugarcane;residue dynamics;degradation |
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基金項目:農業(yè)部農藥殘留實(shí)驗研究項目。
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作者簡(jiǎn)介:李素平(1965-),女,湖南長(cháng)沙人,高級農藝師,研究方向:農藥殘留。
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聯(lián) 系 人:李建國,研究員,博士生導師,研究方向:農田生態(tài)經(jīng)濟系統結構與功能及其運行機理。(E-mail:LCL044@tom.com)
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收稿日期:2011-07-29
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