| 杨庆喜1, 李东阳1, 纪明山1, 张志宏2, 谷祖敏1*.喷雾和灌根施药后吡虫啉在草莓植株中的分布及其对草莓蚜虫的防效[J].植物保护,2019,45(4):250-254. |
| 喷雾和灌根施药后吡虫啉在草莓植株中的分布及其对草莓蚜虫的防效 |
| Systemic distribution of imidacloprid in strawberry plant and its controleffect against aphid with foliar spraying or root drenching |
| 投稿时间：2018-09-03 修订日期：2018-10-18 |
| DOI：DOI: 10.16688/j.zwbh.2018378 |
| 中文关键词: 草莓 灌根法 吡虫啉 蚜虫 防效 |
| 英文关键词:strawberry root drenching imidacloprid aphid control effect |
| 基金项目: |
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| 中文摘要: |
| 采用喷雾和灌根两种施药方法, 设置高、低两个浓度, 测定吡虫啉在草莓植株中的分布及对草莓蚜虫的防效。结果表明, 喷雾处理区, 草莓叶片中吡虫啉初始沉积量高于茎, 叶片中持留的吡虫啉消解较快, 而茎中消解较慢; 灌根处理区, 叶片中吡虫啉积累量于药后7 d达到最大值, 之后缓慢减少, 茎中吡虫啉持留量在药后1~28 d相对稳定。随着时间推移, 不同施药方法对蚜虫的防效不同。喷雾法短期防效(7 d内)优于灌根法, 但持效期较短。灌根施药法速效性较差, 但持效期长, 药后7~28 d防效保持在70%以上。同时, 随着施药浓度的增加, 灌根法的速效性有良好的提升。 |
| 英文摘要: |
| Systemic distribution of imidacloprid in strawberry plants and its control effect on strawberry aphids were investigated by foliar spraying and root drenching with imidacloprid at high and low concentrations, respectively. The results showed that in spray treatment area, the original deposition of the imidacloprid in strawberry leaves was higher than that in stems, but degraded faster in leaves. In root drenching treatment area, the accumulation of imidacloprid in leaves reached the maximum at 7th day after treatment, and then decreased slowly. The retention of imidacloprid in stems was relatively stable 1-28 days after root-drenching. As time went on, the control effect of imidacloprid on aphids under the two treatments was different. Spraying of imidacloprid showed a better control effect on aphids within 7 d than root drenching, but the effective duration was shorter. The root drenching of imidacloprid acted slower but showed a longer effective duration, and the control effect remained above 70% 7-28 days after application. Meanwhile, with the increase of pesticide concentration, the instant efficacy of root drenching method was improved. |
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