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在室内研究了红火蚁Solenopsis invicta种群对玉米、绿豆、芥蓝、芝麻、番茄、水稻、藿香蓟及象草等8种植物种子的选择性取食及其对种子萌发的影响,结果表明红火蚁对芝麻种子最为喜好,且刮啃率最高(82.4%),对芝麻、藿香蓟、象草及芥蓝种子具有较高的搬运率(分别为100.0%、72.0%、44.0%及41.6%)和丢弃率(分别为86.4%、50.4%、79.2%及88.9%)。通过观察回收种子的萌发,结果表明红火蚁对芝麻、藿香蓟和象草种子的破坏最为严重,导致其未能正常萌发的种子分别占总数的64.3%、56.0%及49.7%。因此,通过上述指标可以判断红火蚁入侵后对芝麻、藿香蓟和象草种子存在较大潜在威胁。
The effects of selective insecticides on seed germination and seed germination of Solenopsis invicta were studied indoors. The results showed that the population of Solenopsis invicta Ants preferred sesame seeds with the highest rate of scraping (82.4%) and higher seeding rates (100.0%, 72.0%, 44.0%, and 41.6%) for sesame seeds, Ageratum, ) And discard rate (86.4%, 50.4%, 79.2% and 88.9% respectively). By observing the germination of the recovered seeds, the results showed that the damage of seabuckthorn, Ageratum, and grass weed seeds was the most serious, resulting in 64.3%, 56.0% and 49.7% of the total seeds respectively failed to germinate. Therefore, through the above indicators can be judged after the invasion of red imported fire ant sesame seeds, Ageratum and grass weeds have a greater potential threat.