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近年来梨树腐烂病在我国一些梨产区有发展的趋势,为查消我省发病情况,于1981年5月—6月,在我省主要梨区进行了调查,病株率47%左右,病指数43.9。为摸清梨树腐烂病发病规律,并寻找有效的防治措施,于1985—1987年太谷(农大梨园)设点进行试验研究,结果表明,在晋中地区全年都有发生;且在每年的3—4月和8月下旬—9月有两个发病高峰。病斑主要发生在主干、主枝、侧枝、枝权等部位的向阳面,病菌由伤口侵入.该病菌除危害梨树外,还危害苹果、桃、核桃、杨树、柳、桑、国槐等。梨中以“酥梨”、“身不知”为当地最感病品种,而猪咀梨为最抗病的品种。经两年药剂试验,筛选出效果最佳的药剂是10—15°Be 石硫合剂病斑消毒,治愈率达100%;843康复剂效果也有较好的治疗效果,其次福美砷加煤油和洗衣粉效果也较好。
Pear tree rot disease in recent years in some pear-producing areas have the trend of development, in order to eliminate the incidence of our province, in May 1981 -6 months, conducted a survey in major pear areas in our province, the diseased rate of about 47% , Disease index 43.9. In order to find out the law of occurrence of pear rot disease and to find effective prevention and control measures, a pilot study was conducted at the Taigu (Nongda Liyuan) site from 1985 to 1987 and the results showed that it occurred throughout the year in Jinzhong area. The 3-4 months and late August - September have two peak incidence. Lesions mainly in the trunk, the main branches, collateral, branches and other parts of the sun side, pathogenic bacteria invaded by the wound. In addition to endangering pear disease, but also endanger apples, peaches, walnuts, poplar, willow, mulberry, Sophora japonica Wait. Pears to “pear”, “body I do not know ” as the most susceptible varieties of the local, and piglet pear is the most resistant varieties. After two years of pharmaceutical tests, the best screening agent is 10-15 ° Be limestone spot disinfection, the cure rate of 100%; 843 effect of the rehabilitation agent also has a better therapeutic effect, followed by the United States and arsenic plus kerosene and laundry Powder effect is better.