邓丽 殷君华 李阳 谷建中 任丽 张博

摘要[目的]明确32.5%苯甲·嘧菌酯悬浮剂对开封地区花生叶斑病的防治效果。[方法]以50%多菌灵可湿性粉剂为对照药剂，于2013、2014年通过小区试验研究32.5%苯甲·嘧菌酯悬浮剂对开封地区花生叶斑病的防治效果及最佳喷药时间。[结果]2013年，花生收获前，32.5%苯甲·嘧菌酯悬浮剂2 000倍稀释液对开封地区叶斑病的防效达24.25%，与清水对照相比差异极显著。2014年，在播后65、80 d进行初次喷药的情况下，花生收获前叶斑病防效分别达43.63%、49.7%，与清水对照相比差异极显著。[结论]在开封地区，325%苯甲·嘧菌酯悬浮剂2 000倍稀释液对花生叶斑病的防效和产量具有较好效果，在播后80 d初次喷药防效较佳。

关键词32.5%苯甲·嘧菌酯悬浮剂；花生；叶斑病；防效

中图分类号S435.652文献标识码A文章编号0517-6611（2017）17-0136-02

Abstract[Objective] The aim was to evaluate the control effect of 32.5% benzoylazoxystrobin SC against peanut leaf spot disease in Kaifeng. [Method] Taking 50% carbendazim wettable powder as contrast agent， we studied efficacy and optimum applying time of 32.5% benzoylazoxystrobin SC against peanut leaf spot disease through plot test in 2013 and 2014. [Result] In 2013， the control effect of 2 000 times of 32.5% benzoylazoxystrobin SC liquid against peanut leaf spot disease was 24.25% before peanut harvest and reached significant level. In 2014， the control effect was 43.63% and 49.7% respectively whose first spraying time was 65 days and 80 days after sowing， and the control effect both were very significant than water. [Conclusion] In Kaifeng， 2 000 times of 32.5% benzoylazoxystrobin SC liquid against peanut leaf spot disease has good effect on efficacy and yield， and it which is firstly sprayed at 80 days after sowing has optimum control effect.

Key words32.5% benzoylazoxystrobin SC；Peanut；Leaf spot disease；Efficacy

基金項目河南省重大科技專项（161100111000）；国家花生产业技术体系（CARS-14）；开封市农业科技攻关项目（1502007）。

作者简介邓丽（1981—），女，河南通许人，助理研究员，硕士，从事花生遗传育种与新技术推广研究。

收稿日期2017-03-20

花生是世界重要的油料作物和经济作物[1]。我国作为传统的花生生产、消费和出口大国，总产、单产和种植面积不断扩大[2]。花生褐斑病和黑斑病统称为花生叶斑病，是我国花生生产上分布广、危害重的病害之一，一般可使受害花生减产10%～20%，重者在40%以上[3]。褐斑病在花生开花前即能发生，黑斑病在花生开花期开始发生[4]。花生病虫害的防治是造成食品和环境污染最主要的因素之一[5]，而叶斑病作为花生的一种主要病害，降低了花生产量和品质，因此，有效防治花生叶斑病，对提高花生产量和效益意义重大。……