21种茎叶处理除草剂对刺萼龙葵的生物活性研究

来源 :江西农业大学学报 | 被引量 : 0次 | 上传用户:yqwang1023
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为筛选防治刺萼龙葵的安全、高效除草剂,采用温室盆栽法评价21种苗后阔叶除草剂对刺萼龙葵的防治效果,并对防效较好的药剂进行室内生物测定。结果表明,在田间推荐剂量下,有7种药剂对刺萼龙葵的防效较好,鲜质量抑制率〉90.0%,其中辛酰溴苯腈对刺萼龙葵的活性最高,ED90为67.31 g/hm2(有效成分);氟磺胺草醚最低,ED90为795.47 g/hm2(有效成分)。7种除草剂ED90由高到低的依次为辛酰溴苯腈、氯氟吡氧乙酸、百草枯、三氯吡氧乙酸、氨氯吡啶酸、草甘膦、氟磺胺草醚。综合考虑药剂活性及其推荐剂量,
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