黑龙江省小苹果高接衰退病的调查与检测初报

A small apple grafting recession of the disease investigation and detection of Heilongjiang Province

对黑龙江省宁安市地区主要果树栽培果园,以随机取样的方式,采用RT-PCR法检测了小苹果上主要果树病毒并明确带病类型,同时对果树发病情况进行了调查。结果表明:发病严重的果园,新梢生长量仅占正常树新梢生长量的33%～40%,病株率达40%～65%,病死树率达13%～40%。平均单果重仅占正常果的30%～50%大小。

To Ning＇an the main fruit tree planting orchards of Heilongjiang Province, the manner of random sampling, using RT-PCR to detect small apple fruit tree virus and clearly ill type. At the same time, investigate the incidence of fruit trees o The results showed that： Serious incidence of orchard, shoot growth accounted for only 33% - 40% of the normal tree, rate reached 40% - 65% of diseased plants, Dead tree rate reached 13% - 40%. An average weight accounted for only 30% - 50% size of normal fruit.