大樱桃根癌病的发生与防治试验

Occurrence and Control of Sweet Cherry Root-cancer

近年沂水县大樱桃根癌病危害日趋严重,作者对大樱桃根癌病的发生情况,以及土壤类型、砧木种类及管理水平等对根癌病的影响进行了系统调查,基本摸清大樱桃根癌病的发病规律。药剂试验结果表明,地表上切除癌瘤后涂药,50倍生物菌K84液、10倍10%杀菌优+渗透剂、400单位农用链霉素+渗透剂的治愈率达94%～100%,复发率0～3%,涂药后4～5d病疤干枯;根颈处切除根瘤涂药后的防治效果仍以上述3种药剂的控制效果比较好,且明显好于不切除根瘤、药剂灌根的防治结果。

Sweet cherry trees were harmed seriously by root-cancer （Agrobacteriuct tumefaciens）recently in Yishui County,Shandong Province.The symptoms of this disease and some related elements such as soil,root stock,management level and others were investigated systematically.It was clear for the occurrence rule of the disease.The results of control experiment applying chemicals below showed that the cure rate reached 90% to 100% by smearing on the parts where the root nodules had been cut off, such as 50times liquid of bio-fungus as K84, 10 times 10% germicid-exceUence with osmosis 400cc agro-streptomycin with osmosis.The recurrence rate was 0～3%.The cured scars were shriveled in 5 days.The control effects were better by smearing than that by pouring chemicals into soil with out cutting the root nodules off.