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2012—2013年,对甘肃省5个梨产区14个村25个梨园梨树腐烂病的发生情况进行了调查。结果表明,梨树腐烂病平均发病株率达62%,病情指数34,每株平均病疤数3.50块,病疤主要分布在主枝、侧枝或结果枝组等分枝处,病疤类型以重犯病疤为主,从日灼或冻伤伤口侵染发病的居多。分析认为树龄和树势、品种、冻害及伤口保护不力、果园有机肥投入严重不足、树体负载量过大、病疤刮治不彻底及其他病虫害防治不及时是甘肃省梨产区腐烂病的主要影响因素,并提出了相应的综合防治措施。
In 2012-2013, the occurrence of pear-tree rot in 25 pear orchards in 14 villages of 5 pear producing areas in Gansu Province was investigated. The results showed that the average disease incidence rate of pear tree rot disease was 62%, disease index 34, the average number of lesions per plant 3.50, the scar mainly distributed in the main branch, collateral or fruiting branches and other branches, the type of scar Mainly repeat the disease, the majority of the incidence from the sunburn or frostbite wound infection. Analysis shows that age and tree vigor, variety, frost damage and wound protection ineffective, orchard organic fertilizer into a serious shortage of tree load, scrape cure is not complete and other pests and diseases control is not timely pear rot in Gansu Province Main influencing factors, and put forward the corresponding comprehensive prevention and control measures.