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草业学报  2014 

防除多花黑麦草等4种禾本科杂草的药剂活性测定

DOI: 10.11686/cyxb20140642, PP. 349-354

Keywords: 小麦田,禾本科杂草,除草剂,生物活性

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Abstract:

为了系统研究多花黑麦草、早熟禾、碱茅和棒头草等4种小麦田禾本科杂草的防除药剂活性,在温室内采用盆栽法研究了8种除草剂对小麦田多花黑麦草等4种禾本科杂草的生物活性。结果表明,乙酰乳酸合成酶(ALS)抑制剂啶磺草胺对早熟禾有很好的防除效果,田间推荐剂量下防效达到93.06%(防效均为田间推荐剂量下,下同),对碱茅、多花黑麦草和棒头草的效果也较好,防效在82.82%~86.89%之间,另2种ALS抑制剂氟唑磺隆和甲基二磺隆对早熟禾的防效较好,在61.27%~86.71%之间,但对其他3种杂草碱茅、棒头草和多花黑麦草的防效很差,防效仅在10.47%~29.43%之间。乙酰辅酶A羧化酶(ACCase)抑制剂唑啉草酯、肟草酮和炔草酯对碱茅、棒头草和多花黑麦草的防效均较好,在85.41%~100.00%之间,但对早熟禾的防效均较差,在19.08%~60.69%之间;另一种ACC抑制剂精噁唑禾草灵对棒头草防效为99.60%,对碱茅和多花黑麦草防效分别为72.00%和55.00%,对早熟禾仅为16.18%;植物光合系统Ⅱ抑制剂异丙隆对早熟禾、棒头草和碱茅的防效均较好,田间推荐剂量下防效在88.15%~96.53%之间,对多花黑麦草的效果略差,为67.43%。

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