| 张 炜, 陆俊武, 曹秀霞*, 钱爱萍, 剡宽将.二氯吡啶酸防除胡麻田刺儿菜的药效及安全性评价[J].植物保护,2018,44(3):220-224. |
| 二氯吡啶酸防除胡麻田刺儿菜的药效及安全性评价 |
| Effects and safety evaluation of clopyralid for controlling Cephalanoplos segetum in oil flax field |
| 投稿时间：2018-01-18 修订日期：2018-03-01 |
| DOI：10.16688/j.zwbh.2018032 |
| 中文关键词: 杂草防除 胡麻 刺儿菜 二氯吡啶酸 |
| 英文关键词:weed control Linum usitatissimum Cephalanoplos segetum clopyralid |
| 基金项目:国家特色油料产业技术体系(CARS-14-2-28); 宁夏一二三产业融合发展科技创新示范项目(YES-16-08) |
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| 中文摘要: |
| 针对胡麻田恶性杂草刺儿菜, 选用75%二氯吡啶酸钾盐SP加以防除, 并对其药效及对胡麻的安全性进行了综合评价。结果表明, 75%二氯吡啶酸钾盐SP对刺儿菜具有很好的防除效果, 它使刺儿菜的根部生长受到抑制，最终导致其腐烂。当药剂有效剂量为236.3、270.0 g/hm2时, 药后45 d株防效可达到96.97%和96.53%, 药后60 d烂根率可达到94.20%和94.90%。选择在刺儿菜全部出苗后施药可显著提高防除效果。药剂对胡麻营养生长和生殖生长没有明显抑制作用, 对胡麻主要经济性状也未产生显著影响。 |
| 英文摘要: |
| Clopyralid potassium salt 75% SP was used to control the malignant weed Cephalanoplos segetum in oil flax field, and its efficacy and safety on oil flax were evaluated comprehensively. The results showed that clopyralid potassium salt 75% SP had a very good control effect on C. segetum, and could inhibit the growth of C. segetum roots until they decayed. When the herbicide was applied at the effective dosages of 236.3 and 270.0 g/hm2, the weed control effect was 96.97% and 96.53% after 45 days, respectively, and the rates of rotten roots were 94.20% and 94.90% after 60 days, respectively. Application of the herbicide after all C. segetum seedlings emerged could significantly improve its control effect. Nutritional and reproductive growth of oil flax were not significantly inhibited, and there was no significant impact on the main economic traits of oil flax. |
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