论文部分内容阅读
波尔多液是果园常用的保护性杀菌剂,但在山楂树上使用易引起锈果病。据山东省邹平县东井村调
Bordeaux mixture is commonly used in the orchard protective fungicide, but the use of hawthorn trees can cause rust and fruit disease. According to Dongjing Village, Zouping County, Shandong Province transferred