CHI Zhen-jiang,LI Jin,SUN Jie,et al.Indoor Toxicology and Field Efficacy of Five Biological Pesticides for Controlling Jujube Tersnyhus truncatus in Xinjiang[J].Northern Horticulture,2014,38(12):106-109.
五种生物农药对新疆枣树叶螨室内毒力和田间药效试验
- Title:
- Indoor Toxicology and Field Efficacy of Five Biological Pesticides for Controlling Jujube Tersnyhus truncatus in Xinjiang
- 文章编号:
- 1001-0009(2014)12-0106-04
- 分类号:
- S 665.1
- 文献标志码:
- A
- 摘要:
- 采用玻片浸渍法测定了5种生物农药对截形叶螨的室内毒力，并在田间评价了5种生物农药对枣树叶螨的防效，以期筛选出适合新疆枣树花期使用的杀螨剂。结果表明：0.3%苦参碱对雌成螨的LC50为0.0264 mg/L，其次为18%阿维?鱼藤酮和2%甲氨基阿维菌素苯甲酸盐，LC50分别为0.2678 mg/L和1.1512 mg/L，0.5%印楝素最低，LC50为2.2604 mg/L；0.3%苦参碱水剂和球孢白僵菌菌悬液对枣花的影响最小，药后5 d落花率分别34.78%和32.61%，1.8%阿维?鱼藤酮和0.5%印楝素药后5 d的落花率分别为43.33%和45.45%。综上，0.3%苦参碱1 500、2 000倍液，1.8%阿维?鱼藤酮2 000、2 500倍液和球孢白僵菌10倍菌悬液对截形叶螨的田间防效均在84%以上，可作为枣树花期推荐使用的杀螨剂。
- Abstract:
- Slidedip method was used to determine the indoor toxicity of five biological pesticides to Tetranychus truncatus, and the control efficiency of five biological pesticides on jujube Tetranychus truncatus in the field and the affection of flowers were evaluated,in order to screen the appropriate pestcides at jujube flowering stage in Xinjiang.The results showed that the LC50 of 0.3% matrine on adult female mite was 0.0264 mg/L,1.8% avermectin and rotenone and 2% emamectin benzoate was 0.2678 mg/L and 1.1512 mg/L,respectively,the toxicity of 0.5% azadirachtin was the lowest,and the LC50 was 2.2604 mg/L.After treatment for 5 d,0.3% matrine AS and Beauveria bassiana suspension had the least impact on jujube flower,the drop flower rate were 32.61% and 34.78%,respectively;the drop flower rate of 1.8% Avermectin and rotenone and 0.5% azadirachtin were 43.33% and 45.45%,respectively.The field control efficiency of 0.3% matrine 1 500 times,2 000 times,1.8% avermectin and rotenone 2 000 times,2 500 times,and 10 times the fungus Beauveria bassiana suspension on Tetranychus truncatus were more than 84%,could be used as miticides at jujube flowering stage.
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备注/Memo
第一作者简介：池振江(1988-)，男，河南周口人，硕士研究生，研究方向为农药学。E-mail：527983134@qq.com.
责任作者：赵思峰（1975-），男，博士，教授，硕士生导师，研究方向为植物病虫害生物防治。E-mail:zhsf_agr@shzu.edu.cn.
基金项目：国家科技支撑计划资助项目(2011BAD48B02)。
收稿日期：2014-02-27