异噁唑草酮是国内新登记的一种应用于玉米田的除草剂。为了探讨异噁唑草酮对玉米田杂草防除效果及玉米安全性,采用室内生物测定和田间效果试验相结合的方法,研究了异噁唑草酮在室内及田间对玉米田杂草的活性及玉米安全性。室内试验结果表明,异噁唑草酮土壤处理对马唐、稗草、马齿苋和苘麻均有很好的效果且对玉米安全,其中对阔叶杂草马齿苋和苘麻的效果好于禾本科杂草马唐、稗草,对苘麻和马齿苋的GR90值在2.69~6.39 ga.i./ha之间,对马唐和稗草的GR90值在29.32~29.69 ga.i./ha之间。田间试验结果也表明,异噁唑草酮对玉米田杂草马唐、稗草、牛筋草、反枝苋、狗尾草均有很好的效果且对玉米安全。
英文摘要:
Isoxaflutole was a new herbicide in China. To study the weed control effect and safety to maize of isoxaflutole in maize fields, weed control efficacy of isoxaflutole were evaluated in greenhouse and field. The result of experiments showed that isoxaflutole had better control to Abutilon theophrasti, Portulaca oleracea with GR902.69~6.39 ga.i./ha,and good control to Digitaria sanguinalis, Echinochloa crusgalli with GR9029.32~29.69 ga.i./ha. This conclusion was been proved in maize fields that isoxaflutole had good effects on Digitaria sanguinalis, Echinochloa crusgalli, Eleusine indica, Amaranthus retroflexus and Setaira viridis and safety to maize.
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