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shu wen xi fang zhi dao qu bing
Author(s): 
Pages: 47
Year: Issue:  4
Journal: Agrochemicals

Keyword:  薯瘟锡稻曲病杀虫双毒菌锡井冈霉素防治背负式喷雾器感病品种药剂病穗率;
Abstract: <正> 一、材料和方法供试药剂及使用浓度:40%薯瘟锡可湿粉800倍,40%毒菌锡可湿粉800倍,60%薯瘟锡1200倍(进口),14%胶氨铜(琥珀酸铜)液剂250倍,20%C-861糊剂,30%稻丰灵(井冈霉素-杀虫双)水剂300倍,75%多菌灵可湿性粉剂200倍,设空白对照。供试品种:辽粳五号(感病品种) 试验地为自然病田,小区面积40平方米,重复三次,随机排列。于水稻孕穗期喷药一次,亩喷药液140斤,用背负式喷雾器喷叶面。收割前进行药效调查,取中间三行200穴,调查病穗率及病粒数,以病粒数求防效。
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