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  • 当前位置首页  > 综合新闻  > 便民提示
    农技专家提示
    发布时间2019-03-14 0743 来源石家庄新闻网 字体 打印
     
    据当前各县(?#23567;?#21306;)植保站的调查我市麦田杂草普遍发生其中阔叶杂草主要以播娘蒿荠菜为主部分地块猪殃殃较多禾本科杂草主要以雀麦为主农技专家提示目前小麦已返青各地要密切关注天气变化及时组织发动群众全面开展麦田杂草防治
    麦田杂草与小麦争水争肥争光影响小麦生长降低产量和?#20998;ʣ?#24050;成为威胁我市小麦生产的重要农业有害生物之一据调查今年阔叶杂草平均密度为3.6株/平方米最高52株/平方米禾本科杂草平均密度为2.6株/平方米最高96株/平方米
    以禾本科杂草为主麦田在春季不提倡化学防治要以人工拔除为主在其抽穗前对发生区麦田进行一次以上拉网式拔除不漏地块不留死角力争控制危害
    专家提醒配制药剂时要采取二次稀释法以提高药效亩用水量不少于30公斤选择晴天日平均气温在10以上无风无露时施药喷雾前药液应充分搅拌均匀喷雾防止漏喷重喷严禁超量超浓度施药施药后应注意清洗喷雾器防治时间应掌握在小麦拔节前进行小麦拔节后禁止用药有条件的区域要大力推广统防统治
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