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1.作用和使用对象不同波尔多液是一种良好的保护性杀菌剂,宜在病菌侵入寄主前施用,发病后施用仅有防止病菌再侵染的作用。波尔多液使用范围广,对由真菌引起的霜霉
1. The role and use of different objects Bordeaux mixture is a good protective fungicide, should be used before the invasion of pathogens host, after the onset of application only to prevent the re-infection of bacteria. Bordeaux mixture uses a wide range of fungi caused by downy mildew