春小麦50g L唑啉草酯EC防除春小麦田野燕麦药效及对作物的安全性研究

50g L唑啉草酯EC防除春小麦田野燕麦药效及对作物的安全性研究摘要为明确50 g/L唑啉草酯EC在青海省春小麦田防除野燕麦药效、适宜剂量及对作物的安全性在田间进行50 g/L唑啉草酯EC不同剂量的除草效果试验。于小麦35叶期、野燕麦24叶期对水喷雾处理。结果表明 50g/L唑啉草酯EC是春小麦田防除野燕麦的优良除草剂适宜剂量为900 mL/hm2对野燕麦防效达90%以上对小麦安全增产率12%以上。

关键词 50 g/L唑啉草酯EC春小麦野燕麦效果青海省

Control Effect and Safety of50 g/L Pinoxaden EC against Avena fatua in SpringWheat Field

GUO Liang-zhiGUO Q ing-yunWEI You-haiWENG HuaCHENG LiangLI Wei ZHU Hai-xia

Plant Protection Institute Q inghai Academy of Agricultural and ForestryXining 810016 China

Abstract In order to clarify the control effect and the suitable dosage of 50 g/LPinoxaden EC against Avena fatua and safety to spring wheat trials were conductedwith different concentrations.These herbicides were sprayed during 3-5 leaf stage ofwheat 2-4 leaf stage of A. fatuawith 300 L wate.The results of field trial showedthat 50 g/L Pinoxaden EC was a good herbicide and the suitable dosage was 900mL/hm2.And its effect control against A. fatua was above 90%in spring wheat. 50g/L Pinoxaden EC was safe to spring wheat and the yield of wheat increased by 12%above.

Key words 50 g/L Pinoxaden EC spring wheat Avena fatua controleffect Q inghai Province

春小麦是青海省主要粮食作物种植面积约20万hm2[1]。近年来大量劳动力转向第二、第三产业农田管理放松野燕麦Avena fatua有回升趋势。在青海省土壤处理主要采用40%燕麦畏EC未进行土壤处理的田块一般采取人工除草 由于野燕麦形态与小麦极为相似难以辨认其分蘖力强长势旺盛难以防除严重影响小麦产量和品质。 2009、 2010年就50 g/L唑啉草酯EC在青海春小麦田防除以野燕麦为主的禾本科杂草的药效及对作物的安全性进行了田间小区试验。

1材料与方法

1.1试验药剂

50 g/L唑啉草酯EC先正达中国投资有限公司 69 g/L骠马EW德国拜耳作物科学公司。