Toxicity and Field Efficiency of Several Fungicides against Ustilaginoidea virens
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摘要: 采用生长速率法测定19种杀菌剂和苯醚甲环唑.井冈霉素A混配剂对水稻稻曲病菌的室内毒力,选择其中较好的8种药剂进行田间防效试验。结果表明:丙环唑、肟菌酯、咪鲜胺、戊唑醇、啶氧菌酯、嘧菌酯和苯醚甲环唑对稻曲病菌菌丝的抑制作用较强,EC50值分别为0.025 4、0.032 8、0.041 8、0.045 1、0.082 6、0.100 1和0.148 2mg.L-1;苯醚甲环唑和井冈霉素A按1∶2的比例混配增效作用非常明显,混剂共毒系数为174.78,EC50值为0.226 3mg.L-1;43%戊唑醇SC、25%嘧菌酯SC、25%咪鲜胺EC、8%井冈霉素A.4%苯醚甲环唑WP和25%丙环唑EC田间防效较好,分别为83.27%、82.76%、82.73%、80.66%和80.35%。Abstract: The toxicities of 19fungicides and the mixture difenoconazole validamycin A against Ustilaginoidea virens were tested in laboratory by detecting mycelial growth rate,and eight fungicides with better efficacy were selected to test in fields.The results showed that propiconazole,trifloxystrobin,prochloraz,tebuconazole,picoxystrobin,azoxystrobin and difenoconazole had stronger inhibition on mycelial growth,and the EC50values were 0.025 4,0.032 8,0.041 8,0.045 1,0.082 6,0.100 1and 0.148 2mg.L-1,respectively.The mixture of difenoconazole and validamycin A combined with the ratio of 1∶2had obvious efficiency on Ustilaginoidea virens,with the 174.78 and the EC500.226 3 mg.L-1.Field tests revealed that 43% tebuconazole SC,25% azoxystrobin SC,25% prochloraz EC,8% validamycin A 4%difenoconazole WP and 25% propiconazole EC had better control effect,which were 83.27%,82.76%,82.73%,80.66%and 80.35%,respectively.
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Key words:
- fungicide /
- Ustilaginoidea virens /
- toxicity test /
- field efficiency
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[1] OU S H.Rice disease[M].UK:Comm M yc Inst Kew,1972:288-295. [2] 肖启明,刘二明,高必达,等.农业植物病理学[M].北京:中国教育文化出版社,2007. [3] 季宏平.国内外稻曲病研究进展[J].黑龙江农业科学,2002,(4):34-37. [4] 王政逸,谢国雄.我国稻曲病的研究现状[J].浙江农业科学,2000,(S1):10-13. [5] 黄金杯,刘二明,肖启明,等.18个水稻品种抗稻曲病的田间抗性评价[J].湖南农业科学,2009,(1):69-72. [6] 刘国安,何念杰,汪金莲.稻曲病菌[Ustilaginoidea virens(cooke)Tak]厚垣抱子发芽力的研究[J].江西农业大学学报,1989,11(3):29-34. [7] 冷其昌.稻曲病菌对家禽和兔毒性试验初报[J].江西植保,1984,(3):35-38. [8] 高峻.稻曲病粒对鸡和兔的毒性[J].植物保护,1992,18(10):52-54. [9] 尚炳荣,许绍朴,王云英,等.水稻稻曲病菌对猪的危害性试验[J].浙江农业科学,1985,(1):35-37. [10] 王国良.影响稻曲病厚垣孢子萌发因素的研究[J].植物保护学报,1998,15(4):241-245. [11] 李竞生.四川省籼稻区水稻稻曲病菌遗传多样性分析及稻曲病防治技术研究[D].雅安:四川农业大学,2009. [12] 姜慎,唐春生,谭志琼.国内外稻曲病研究现状[J].热带农业科学,2010,30(3):62-66. [13] 骆焱平,郑服从.农药学科群实验指导[M].海口:海南出版社,2008. [14] 李敏,胡美姣,高兆银,等.杀菌剂对番木瓜胶孢炭疽菌的室内毒力测定[J].农药,2009,48(10):767-768. [15] 华南农业大学.植物化学保护[M].北京:中国农业出版社,1980:62-63. [16] 施辰子,郭玉人,陆保理,等.水稻稻曲病分级标准及导致产量损失的初步测定[J].上海交通大学学报:农业科学版,2003,21(2):152-155. [17] 黄珊.水稻稻曲病研究进展[J].福建农业学报,2012,27(4):452-456. [18] 林琳,叶正和,高同春.水稻稻曲病菌药剂室内生物测定和筛选[J].安徽农业科学,2008,36(4):1482-1483. [19] 李竞生,张敏,陈华保,等.几种杀菌剂对稻曲病菌的室内毒力测定[J].安徽农业科学,2009,37(21):10042-10044. [20] 陈莉,许娟,丁克坚,等.药剂对稻曲病菌的毒力测定及复配研究[J].植物保护,2012,38(3):159-161. [21] 张舒,汪光友,吕亮,等.八种药剂对水稻稻曲病的防效和增产作用[J].湖北农业科学,2012,51(19):4260-4261,4265. [22] 李军,诸茂龙.75%拿敌稳水分散粒剂对水稻穗期稻瘟病及稻曲病的防效研究[J].现代农业科技,2013,(2):138-138,142. [23] 李莲,杨红梅.50%咪鲜胺可湿性粉剂对稻曲病控病效果初探[J].中国稻米,2013,19(1):69-69,73. -
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