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梨锈病是梨树毁灭性病害,过去一直没有找到防治的有效方法。据记载,梨园2.5～5km范围内如有桧柏树,就会发生梨锈病,这在很大程度上限制了梨树的发展,也使老梨园受到潜在威协。我场有1400亩梨园,是50年代末栽种的,位于风景秀丽的敬亭山下,芜屯公路穿园而过。近年来,由于敬亭山景点不断开发及宣九公路的建设,桧柏、龙柏等大量栽植,梨锈病已成为我场最主要病害,且病情逐年加重。1991年前少见病叶,1992年山南梨区病情恶化,1993年主要梨区病指迅速上升,1994年山南梨树由
Pear rust is a devastating disease of pear, in the past has not found an effective prevention and treatment methods. According to records, pear garden 2.5 ~ 5km within the cypress cypress cypress, pear rust will occur, which largely limits the development of pear, but also to the old pear garden potential threat. My field has 1,400 acres of pear orchard, is planted in the late 50s, is located in the scenic mountain under King Ting, Wu Tun Road, passing through the park. In recent years, as Jingtingshan attractions continue to develop and Xuanjiu highway construction, cypress, cypress and other large planting pear rust has become the most important disease in our field, and the condition increases year by year. Rare disease before 1991, Shannan pear district in 1992, the disease deteriorated in 1993 the prevalence of major pear disease rose rapidly in 1994 Shannan pear from