郭富友, 周红, 刘瑾林, 马晓峰, 丁伟*.二甲氧香酯对柑橘全爪螨的毒力测定及田间防效[J].植物保护,2021,47(2):267-270. |
二甲氧香酯对柑橘全爪螨的毒力测定及田间防效 |
Toxicity and field efficacy of scoparone against Panonychus citri (McGregor) |
投稿时间:2019-11-02 修订日期:2020-07-04 |
DOI:10.16688/j.zwbh.2019600 |
中文关键词: 二甲氧香酯 柑橘全爪螨 毒力 田间药效 |
英文关键词:scoparone Panonychus citri toxicity field effect |
基金项目:国家自然科学基金( 31972288) |
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中文摘要: |
利用玻片浸渍法测定了二甲氧香酯对柑橘全爪螨的室内毒力, 并严格按照田间药效规范, 开展田间药效试验评价了5%二甲氧香酯EC对柑橘全爪螨的防治效果。结果表明, 处理 48 h 后, 二甲氧香酯及其制剂 LC50分别为174 mg/L和114 mg/L, 其对柑橘全爪螨的毒力是螺螨酯原药的1.61倍和2.46倍。田间药效结果表明, 施药后1~14 d, 5%二甲氧香酯EC 125~250 mg/kg处理可达到最大防效94.0%, 显著优于或与对照药剂240 g/L螺螨酯SC 60 mg/kg的防效相当。5%二甲氧香酯EC可有效防治柑橘全爪螨, 且持效期长, 对柑橘生长安全, 值得推广应用。 |
英文摘要: |
Toxicity and field efficacy of scoparone and scoparone 5% EC against Panonychus citri (McGregor) were evaluated by slide-dipping method and field experiment according to guidelines on efficacy evaluation of pesticides. The results showed that the LC50 values of scoparone and scoparone 5% EC were 174 mg/L and 114 mg/L, respectively, and the toxicity index of spiromites were 1.61, 2.46 after treatment for 48 h. One to fourteen days after treatment, the control efficacy of scoparone 5% EC at the dosage of 125250 mg/kg could reach the maximum value (94.0%)after 14 d, which was equal to or significantly better than that of spiromites 240 g/L SC at 60 mg/kg. In summary, scoparone 5% EC formulation presented a good control efficacy on P.citri, more persistent effect, safe for the growth of citrus trees, which was worth popularizing and applying. |
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