| 曹梦宇1, 仇 凯1, 赵素梅1, 李国强1, 高 健1, 于凤玲2, 薛晓阳1, 曹 宇1, 张静航1, 赵晓军3, 高 翔3, 薛智平3, 黄俊霞1*.草地螟为害大豆、向日葵的产量损失与防治指标研究[J].植物保护,2025,51(3):69-73. |
| 草地螟为害大豆、向日葵的产量损失与防治指标研究 |
| A study on yield loss and economic thresholds of soybean and sunflower damaged by Loxostege sticticalis |
| 投稿时间：2024-12-09 修订日期：2025-02-03 |
| DOI：10.16688/j.zwbh.2024634 |
| 中文关键词: 草地螟 大豆 向日葵 产量损失 防治指标 |
| 英文关键词:Loxostege sticticalis soybean sunflower yield loss economic threshold |
| 基金项目:国家重点研发计划(2022YFD1400605) |
| 作者 | 单位 | E-mail | | 曹梦宇1, 仇 凯1, 赵素梅1, 李国强1, 高 健1, 于凤玲2, 薛晓阳1, 曹 宇1, 张静航1, 赵晓军3, 高 翔3, 薛智平3, 黄俊霞1* | 1. 内蒙古自治区植保植检中心, 呼和浩特 010010
2. 克什克腾旗农牧局, 赤峰 025350
3. 包头市农牧科学研究院, 包头 014010 | 979937801@qq.com |
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| 中文摘要: |
| 草地螟Loxostege sticticalis是内蒙古地区重大迁飞性害虫, 极大地威胁大豆、向日葵的生产。为明确草地螟虫口密度与大豆、向日葵产量损失关系, 确定防治指标, 在内蒙古中西部地区, 采用田间接虫的方法, 研究了草地螟虫口密度与大豆、向日葵产量损失之间的关系和防治指标。结果表明, 大豆产量损失率(y)与草地螟虫口密度(x)显著相关, 回归模型为y=0.113 5x2-1.760 7x-1.818 2。向日葵产量损失率(y)与草地螟虫口密度(x)显著相关, 回归模型为y=0.005 2x2-0.220 7x-2.079 8。按照防治指标的直接收益与成本, 确定了该地区大豆田草地螟的防治指标为26.68头/株, 向日葵田草地螟的防治指标为56.39头/株。研究结果对该地区大豆、向日葵田草地螟科学、精准防控具有重要指导价值, 对化学农药减量、提高防治经济效益以及保护生态环境具有重要意义。 |
| 英文摘要: |
| Loxostege sticticalis is one of the most destructive agricultural pests in Inner Mongolia, posing a great threat to soybean and sunflower production. To quantify yield losses and determine economic thresholds for soybean and sunflower caused by L. sticticalis, artificial field plot infestation experiments were carried out in the central and western regions of Inner Mongolia. The results showed that the soybean yield loss rate (y) was significantly correlated with insect density (x), following the regression model: y=0.113 5x2-1.760 7x-1.818 2. Sunflower yield loss rate (y) was also significantly correlated with insect density (x), with the regression model: y=0.005 2x2-0.220 7x-2.079 8. According to the direct benefits and control costs, the economic threshold for controlling L. sticticalis was determined as: 26.68 larvae per plant for soybean and 56.39 for sunflower. These results provide scientific guidance for accurate effective management of L. sticticalis in soybean and sunflower fields in the central and western regions of Inner Mongolia. Furthermore, these findings contribute to reducing chemical pesticide use, improving the economic benefits of control, and protecting the ecological environment. |
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