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近几年来,苹果炭疽病在我县的果树上发生甚为严重,据调查,病果率常在40%以上,个别严重的果园病果率在60%—80%,造成了很大损失。用常规的波尔多液进行防
In recent years, apple anthracnose occurs very badly in the fruit trees of our county. According to the survey, the rate of disease and fruit is often over 40%. The rate of fruit disease in some serious orchard is between 60% and 80%, causing great losses. Use conventional Bordeaux solution for protection