不同间隔期喷施波尔多液对苹果褐斑病的防效评价

Evaluation on Control Efficiency of Spraying Bordeaux Mixture at Different Intervals against Apple Leaf Brown Spot

[目的]确定延长波尔多液施用间隔时间的可行性,为在实际生产管理中合理施用该药剂提供参考.[方法]2012、2013年分别间隔14、21和28 d施用波尔多液防治苹果褐斑病,评价其对苹果褐斑病的防治效果.[结果]当施用波尔多液间隔期为28 d时,减少施药次数1～2次,仍能有效防治苹果褐斑病.[结论]通过试验延长了波尔多液的施药间隔期并减少了使用次数,节省了成本,降低了污染.

[ Objective ] The feasibility of delaying the interval of spraying Bordeaux mixture was understand to provide reference for application of the agent. [ Method] In the year 2012 and 2013, the Bordeaux mixture was spraying against apple leaf brown spot and three different intervals （14 d, 21 d and 28 d） were used. The control efficiency of Bordeaux mixture against apple leaf brown spot was evaluated. [ Result] Bordeaux mixture still took good control efficiency when the interval extended to 28 d, and the applying times was decreased by 1-2 times. [ Conclusion ] Extending the internals of spraying Bordeaux mixture can reduce the spraying times, save the cost, and reduce the pollution.