| 田 亚, 赵恒科, 严 伟, 卢文才, 钱 坤, 魏 朋, 何 林*.伊维菌素和丁氟螨酯复配最佳配比筛选及田间药效评价[J].植物保护,2016,42(5):221-224. |
| 伊维菌素和丁氟螨酯复配最佳配比筛选及田间药效评价 |
| Optimum ratios and field control efficacy of ivermectin and cyflumetofen to Tetranychus cinnabarinus |
| 投稿时间：2015-10-09 修订日期：2015-11-16 |
| DOI： |
| 中文关键词: 伊维菌素 丁氟螨酯 最佳配比 田间防效 |
| 英文关键词:ivermectin cyflumetofen proportion mixture field control efficacy |
| 基金项目:云南重大农业害螨综合防控关键技术研究应用及杀螨剂开发（2015BB009）；国家自然科学基金青年基金(31301717)；高等学校博士学位点专项科研基金新教师项目（20120182120020） |
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| 中文摘要: |
| 本研究采用药膜法测定了伊维菌素、丁氟螨酯对朱砂叶螨的室内毒力。采用共毒因子法、共毒系数法对最佳配比进行筛选并加工成5%伊维菌素·丁氟螨酯水乳剂进行田间防效试验。结果显示:伊维菌素∶丁氟螨酯=1∶1时，共毒系数(CTC)高达265.66。伊维菌素·丁氟螨酯配比的数学模型为Y=-1.3787X2+79.264X-881.41，R2=0.9154，理论最佳配比为1∶1，CTC=257.77。田间防效显示：5%伊维菌素·丁氟螨酯水乳剂药效良好，有效成分用量为25~50 mg/L时，药后3、10、20 d防效均高于80%。 |
| 英文摘要: |
| The indoor toxicities of acaricide ivermectin and cyflumetofen to Tetranychus cinnabarinus were determined by residual film method. Meanwhile, the co-toxicity factors and Sun’s co-toxicity coefficients (CTC) were used to screen their optimal ratio. Complex formulation of 5% ivermectin·cyflumetofen (1∶1) was prepared and tested for field control efficacy. The results showed that the mixture has best synergistic effect when a ratio of ivermectin and cyflumetofen was 1∶1, the co-toxicity coefficient was up to 265.66. The ratio mathematical model of ivermectin and cyflumetofen was Y=-1.378 7X2+79.264X-881.41 (R2=0.9154), and the theoretical optimum ratio was 1∶1 (CTC=257.77). The results of field efficacy indicated that 5% ivermectin·cyflumetofen emulsion in water could obtain good efficacy. At the 3rd, 10th, 20th days, the control efficacy was more than 80% when the dosage of active ingredients was 25-50 mg/L |
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