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调查研究表明，在同等条件下，西洋参对黑斑病的感染程度比人参更为严重。造成这种差异的原因可能与两种植物的形态结构、生育期和对环境的适应性等不同有关。
Investigations and studies have shown that under the same conditions, American ginseng is more serious than ginseng in the infection of black spot. The reason for this difference may be related to the differences in the morphological structure, growth period, and adaptability to the environment of the two plants.