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桉树主要病虫害有:1、溃疡病。危害期多从3月份开始,8、9月份为发病盛期,11月后停止蔓延。防治措施:建立无病苗圃,对病苗彻底清除,加强水肥管理,在病害流行期,适当施磷钾肥,少施N肥。在发病期间可用1:1:100波尔多液或50％多菌灵可湿性粉剂1000倍喷雾防治。2、茎腐病:主要危害苗木。苗木过密,连绵阴雨、高温高湿天气较易发生。通常在桉苗离
Eucalyptus main pests are: 1, ulcer disease. Hazard period and more from the beginning of March, August, September is the peak of the disease, after November to stop the spread. Prevention and treatment measures: The establishment of disease-free nurseries, the complete elimination of the disease vaccine to strengthen water and fertilizer management, disease epidemic period, the appropriate phosphorus and potassium fertilizer, less N fertilizer. Available during the onset of 1: 1: 100 Bordeaux mixture of 50% carbendazim WP 1000 times spray control. 2, stalk rot: the main damage to seedlings. Overmuch seedlings, continuous rain, high temperature and humidity weather is more likely to occur. Eucalyptus usually leaves