苹果花期(3月下旬至4月下旬)大部分越冬害虫已开始活动为害,天敌昆虫也相继出蛰。这一时期苹果园的主要防治对象是苹果树腐烂病、白粉病、斑点落叶病、轮纹病、山楂叶螨,应进行普遍防治;发生量较少,危害程度较轻的病虫主要有枣尺蠖、蚜虫等,应视情况,采取防治措施。 Apple florescence (late March to late April) Most of the overwintering pests have begun to damage the activities of natural enemies of insects have also come out sting. Apple orchard during this period the main control object is apple tree rot disease, powdery mildew, spotted leaf disease, ring disease, hawthorn spider mite, should be carried out universal control; Occurrence less, less harmful pests mainly jujube蠖 蠖, aphids, etc., as appropriate, to take preventive measures.