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注意施用时期波尔多液属于保护性杀菌剂,宜在发病前使用,发病后使用效果不很理想。苹果树落花后一个月内和果实临近成熟期不宜施用,需要时可喷些有机杀菌剂,如多菌灵、甲基托布津等。注意根据不同树种、不同品种采用不同的配制浓度对铜离子敏感的苹果、梨等树种应采用倍量式或多量式波尔多液;对铜离子更为敏感的桃、杏、李等核果类
Note Bordeaux mixture during the administration of a protective fungicide, should be used before onset, the use of the effect is not very satisfactory. Apple trees falling within one month after the fruit and fruit near maturity should not be applied, if necessary, spray some organic fungicides, such as carbendazim, thiophanate-methyl and so on. Note that according to different tree species, different varieties of different concentrations of copper ions are sensitive to the preparation of apple, pear and other tree species should be double or multi-volume Bordeaux mixture; copper ions are more sensitive peach, apricot, plum and other stone fruit