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近几年,随着商品经济的发展,浙江省以桃梨为主的果苗流通日趋频繁,果苗基地随之扩大,新辟果园增多。在产地调查和调运检疫中,发现细菌性根癌病随果苗调运的传播较为普遍。例如,1989年12月21日,浙江省农科院安溪果试场拟出圃的果苗中,梨苗600株,有根癌病病株14株,病株率2.33%,桃苗700株,有病株13株,病株率1.86%。同年12月30日对杭州大观山果园4000余株甜柿苗产地检查,根癌病发病率为
In recent years, along with the development of commodity economy, peach-pear-based fruit seedlings in Zhejiang Province have been circulating more and more frequently. Fruit-seedling bases have expanded and new orchards have increased. In the place of origin investigation and quarantine inspection, found that the spread of bacterial root disease with the distribution of fruit seedlings is more common. For example, December 21, 1989, Zhejiang Provincial Academy of Agricultural Sciences Anxi fruit trial to be nursery in the nursery, pear seedlings 600, there are 14 strains of diseased plants, diseased plants 2.33%, 700 peach trees, sick 13 strains, diseased plants rate of 1.86%. December 30 the same year Hangzhou Dagangshan orchard more than 4,000 persimmon seedlings origin check, the incidence of root cancer