桶混不同助剂的54％噻苯·敌草隆SC对棉花脱叶效果和安全性评价  

Activity and Safety Evaluation of Defoliant Thidiazuron·Diuron 54% SC with Different Adjuvants to Cotton

作　　者：单彬[1] 潘玲玲[2] 颜克成[1] 林长福[1] 

机构地区：[1]沈阳化工研究院有限公司新农药创制与开发国家重点实验室,沈阳110021 [2]中国农业大学,北京100193

出　　处：《农药》2013年第10期756-758,共3页Agrochemicals

基　　金：国家重点基础研究计划(973计划)项目(2012CB724501)

摘　　要：[目的]54％噻苯·敌草隆SC分别与伴宝、黑森、速捷3种喷雾助剂配合使用，评价其田间药效和安全性。【结果】施药处理1-4的棉花脱叶率和吐絮率分别为90％和80％左右，高于空白对照；施药处理1-4的棉花纤维长度和中、下部单铃重与空白对照基本相当，上部棉桃单铃重和小区产量比空白对照稍低；施药处理1-4间棉株的纤维长度、单铃重和小区产量基本相当。【结论】施用添加喷雾助剂的54％噻苯·敌草隆SC能有效提高棉花脱叶率和吐絮率，3种喷雾助剂对54％噻苯·敌草隆SC的活性和安全性基本相当；450、675mL／hm2剂量下的喷雾助剂速捷对54％噻苯-敌草隆SC的活性和安全性差异不明显，因此综合考虑活性、安全性和经济性等因素，速捷可以替代另外2种助剂与54％噻苯·敌草隆SC配合使用，推荐田间施用剂量为450mL／hm2。[Aims] Thidiazuron＇diuron 54% SC mixed with 3 spray adjuvants （Biopower, Hesten, Li-700） respectively are used in cotton filed to evaluate their efficacy and safety to cotton. [Results] The results showed that the rates of shed leaves and boll opening in treatment 1-4 are about 90 and 80%, which are higher than the control. The fiber length and single boll weight of lower or middle plant in treatment 1-4 are equal to the control, but the upper single boll weight and plot yield are a little lower than the control. There is no significant difference among treatment 1-4 in the fiber length, single boll weight and plot yield. [Conclusions] Application of thidiazuron-diuron 54% SC added spray adjuvants can improve the rate of shed leaves and boll opening effectively, besides, the activity and safety of these 3 spray adjuvants to thidiazuron＇diuron 54% SC are similar. The difference of the activity or safety of Li-700 between dosage 450 and 675 mL/ha is not obvious. In conclusion, the recommended dosage of Li-700 in field is 450 mL/ha according to the overall consideration of factors such as activity, safety and economy.

关 键 词：脱叶剂 喷雾助剂 速捷 

分 类 号：S482.894[农业科学—农药学] S562[农业科学—植物保护]