【摘要】 为有效解决半夏田草害问题，选择4种茎叶除草剂进行半夏田杂草防除田间药效试验。结果表明：10%乙羧氟草醚EC 50～60 mL/667m~2(制剂用量，下同)处理与240 g/L乳氟禾草灵EC 20～30 mL/667m~2处理能有效防除半夏田金腰箭、辣子草、土荆芥、金荞麦、紫花香薷、针筒菜、尼泊尔蓼等阔叶杂草，且对半夏安全，药后21 d对阔叶杂草株防效、鲜重防效均达90%以上，与禾本科除草剂8.8%精喹禾灵EC 40 mL/667m~2或108 g/L高效氟吡甲禾灵EC 30mL/667m~2搭配使用对半夏田大部分杂草能实现较好防除。但两种阔叶除草剂持效期较短(30 d左右),生产上可根据施药后期田间杂草发生情况，采用人工拔除或进行第2次化学防除；施药应避开中午高温时刻，以免造成此类阔叶除草剂药害。研究结果可为半夏田除草剂的合理选择和应用提供科学依据。更多还原

【Abstract】 In order to effectively solve the problem of grass damage in Pinellia field, four post-emergence herbicides were selected for test in Pinellia ternata field. The results showed that the treatment of fluoroglycofen-ethyl 10% EC at 50-60 mL/667m~2(dosage of preparation) and lactofen 240 g/L EC at 20-30 mL/667m~2 could effectively control broadleaf weeds in Pinellia field, such as Synedrella nodiflora, Galinsoga parviflora, Chenopodium ambrosioides, Fagopyrum dibotrys, Elsholtzia argyi, Stachys oblongifolia, Polygonum nepalense, etc, and was safe to Pinellia ternata. The control efficacies on plant and fresh weight of broadleaf weeds were more than 90% after treatment for 21 days. When the two herbicides mixed with the gramineous herbicide quizalofop-P-ethyl 8.8% EC 40 g/667m~2 or haloxyfop-P-methyl 108 g/L EC 30 g/667m~2, good control effect on most weeds in P.ternata field could be achieved. However, the persistence of the two broadleaf herbicides was relatively short(about 30 days). In production, according to the occurrence of weeds in the field after application, manual removal or the second chemical control can be adopted, and the herbicides should be not used at midday heat to avoid the damage of crops caused by high temperature. The results can provide a scientific basis for the rational selection and application of herbicides in P.ternata field.更多还原