合成3,5-二溴-4-羟基苯腈防治玉米杂草研究  

Synthesis of 3,5-Dibromo-4-Hydroxybenzonitrile and Its Plot Experiments on Controlling the Weeds in Maize Field

作　　者：高兴文[1] 陈懿[1] 严敏[1] 姚福荣[1] 

机构地区：[1]贵州民族学院化学与环境科学学院,贵州贵阳550025

出　　处：《安徽农业科学》2009年第34期16911-16912,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]探讨3,5-二溴-4-羟基苯腈对田间杂草的防除效果。[方法]以自制的3,5-二溴-4-羟基苯腈乳油为供试药剂,通过田间小区试验研究其对玉米地杂草的防除效果。[结果]施药10d后,当3,5-二溴-4-羟基苯腈乳油的施药量为600g/hm2时,其对单子叶杂草防效为73.2%,远远高于对照药剂;两者对双子叶杂草的防效分别为96.6%和100.0%。施药20d后,当3,5-二溴-4-羟基苯腈乳油的施药量为300～600g/hm2时,其对单子叶杂草的株数和鲜重防效分别为25.0%～70.6%和0～51.8%,对双子叶杂草的株数和鲜重防效分别为21.6%～70.3%和95.9%～99.7%;而对照药剂对双子叶杂草的防效为100.0%。施药40d后,3,5-二溴-4-羟基苯腈乳油对单子叶杂草鲜重防效为51.5%～89.2%,对双子叶杂草鲜重防效为93.6%～97.0%。[结论]在3叶期后使用3,5-二溴-4-羟基苯腈防除玉米地杂草安全有效。[ Objective] The purpose was to discuss the control effect of 3,5-dibromo-4-hydroxybenzonitrile on the weeds in field. [ Method] With self-made 3,5-dibromo-4-hydroxybenzonitrile EC as tested herbicide,its control effect on the weeds in maize field was researched through field plot experiment. [ Result] After 10 d since herbicide application,when the application dosage of 3,5-dibromo-4-hydroxybenzonitrile EC was 600 g/hm2 , its control effect on monocotyledonous weeds was 73.2% and far higher than that of control herbicides ; their control effects on dicotyledonous weeds were 96.6% and 100% resp. After 20 d since herbicide application, when the application dosage of 3,5-dibromo-4- hydroxybenzonitrile EC was 300 - 600 g/hm2, its control effects on the plant number and fresh weight of monocotyledonous weeds were 25.0% -70.6% and 0 -51.8% re sp. and that on the plant number and fresh weight of dicotyledonous weeds were 21.6% -70.3 % and 95.9% - 99.7% resp. ; but the control effect of control herbicides on dicotyledonous weeds was 100.0%. After 40 d since herbicide application,the fresh weight control effect of 3,5-dibromo-4-hydroxybenzonitrile EC on monocotyledonous weeds was 51.5% -89.2% and its fresh weight con- trol effect on dicotyledonous weeds was 93.6% - 97.0%. [ Conclusion ] It was safe and effective to control the weeds in maize field with 3,5- dibromo-4-hydroxybenzonitrile after 3-leaf stage.

关 键 词：3 5-二溴4-羟基苯腈 生物活性 除草剂 合成 

分 类 号：S451.1[农业科学—植物保护]