| 吡唑醚菌酯与戊唑醇复配对葡萄炭疽病菌增效活性与田间防效 |
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| 引用本文： | 吉沐祥,刘吉祥,王建华,彭燕琼,李国平.吡唑醚菌酯与戊唑醇复配对葡萄炭疽病菌增效活性与田间防效[J].农业科学与技术,2017,18(2). |
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| 作者姓名： | 吉沐祥 刘吉祥 王建华 彭燕琼 李国平 |
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| 作者单位： | 1. 江苏丘陵地区镇江农业科学研究所,江苏句容,212400;2. 江苏农林职业技术学院,江苏句容,212400 |
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| 基金项目： | 江苏省农业科技自主创新项目”江苏丘陵地区葡萄主要病害高效安全防控技术研究”，国家科技富民强县专项”应时鲜果病虫害绿色防控技术集成研究及示范推广”[BN20156222].Supported by Jiangsu Agricultural Science and Technology independent Innovation Fund (CX，Science & Technology Specific Project for Enriching People and Strengthening County Economy in China |
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| 摘 要： | 目的]为筛选防治葡萄炭疽病的高效低毒新型复配药剂,降低有效用药量,提高防治效果,防止与延缓抗药性产生.方法]本研究采用菌丝生长速率法测定了吡唑醚菌酯、戊唑醇及其复配制剂对葡萄炭疽病菌的毒力,并通过田间试验评价了其对葡萄炭疽病的防治效果.结果]吡唑醚菌酯与戊唑醇及5∶1、3∶1、1∶1、1∶3、1∶5复配组合对葡萄炭疽病菌的EC50(半最大效应浓度)值分别为1.038 8μg/ml、0.3583 μg/ml、0.612 9μg/ml、0.530 1μg/ml、0.2326 μg/ml、0.232 8μg/ml和0.329 6μg/ml;5种复配组合对葡萄炭疽病菌的增效系数(SR)分别为1.29、1.33、2.29、1.84、1.22,其中以1∶1复配的组合增效作用最大.田间防效调查结果表明,25％吡唑醚菌酯·戊唑醇悬浮剂药剂1 000倍液、2 000倍液、3 000倍液以及430 g/L戊唑醇悬浮剂5 000倍液、250 g/L吡唑醚菌酯乳油2 000倍液对葡萄炭疽病防治效果分别为91.54％、90.80％、82.88％、76.43％、74.10％.结论]因此,吡唑醚菌酯和戊唑醇复配防治葡萄炭疽病增效明显,其中以质量比1∶1混合后对葡萄炭疽病菌增效作用最为显著,果穗套袋前采用25％吡唑醚菌酯·戊唑醇悬浮剂1000～2 000倍液浸果防治葡萄炭疽病害防效均达90％以上.
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| 关 键 词： | 葡萄炭疽病 吡唑醚菌酯 戊唑醇 复配 抑菌活性 田间防效 |
Synergism and Field Efficacy of Mixed Preparations of Pyraclostrobin and Tebuconazole to Glomerella cingulata |
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| Muxiang JI,Jixiang LIU,Jianhua WANG,Yanqiong PENG,Guoping LI.Synergism and Field Efficacy of Mixed Preparations of Pyraclostrobin and Tebuconazole to Glomerella cingulata[J].Agricultural Science ＆ Technology,2017,18(2). |
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| Authors: | Muxiang JI Jixiang LIU Jianhua WANG Yanqiong PENG Guoping LI |
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| Abstract: | Objective] This study was conducted to screen high-efficient low-toxicity new compound preparation for control of Glomerella cingulata.Method] The toxicity of pyraclostrobin,tebuconazole and their mixed preparations to Glomerella cingulata was determined by mycelial growth rate method,and their control effects on Glomerella cingulata were evaluated by field efficacy test.Result] The mixed preparations of pyraclostrobin and tebuconazole at mass ratios of 5∶1,3∶1,1∶1,1∶3 and 1∶5 exhibited EC50 values to mycelial growth of Glomerella cingulata of 0.612 9,0.530 1,0.232 6,0.232 8 and 0.329 6 μg/ml,respectively;and the 5 preparations exhibited synergistic coefficients (SRs) to Glomerella cingulata of 1.29,1.33,2.29,1.84 and 1.22,respectively,and among them,the preparation with mass ratio of 1∶1 showed the highest synergism.The field efficacy test showed that the field control effects of 1 000 times,2 000 times and 3 000 times dilutions of 25％ pyraclostrobin· tebuconazole suspension,5 000 times dilution of 430 g/L tebuconazole suspension and 2 000 times dilution of 250 g/L pyraclostrobin EC were 91.54％,90.80％,82.88％,76.43％ and 74.10％,respectively.Conclusions] Therefore,the mixed preparations of pyraclostrobin and tebuconazole showed remarkable synergism on control of Glomerella cingulata,and preparation with the mixing ratio of 1∶1 exhibited the most significant synergism on Glomerella cingulata.For soaking treatment to fruit clusters with 1 000-2 000 times dilution of 25％ pyraclostrobin ·tebuconazole suspension,the field efficacy to Glomerella cingulata was over 90％. |
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| Keywords: | Glomerella cingulata Pyraclostrobin Tebuconazole Mixed preparation Antifungal activity Field efficacy |
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