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室内毒力测定和田间试验一致表明：代森锰锌和异菌脲混用较单一使用对西洋参黑斑病有明显的增效作用，二者混用后增强了对孢子萌发和菌丝生长的抑制效能，显著提高了田间药效。
The indoor toxicity test and the field test consistently showed that the combination of mancozeb and iprodione had a significant synergistic effect on the black spot of American ginseng compared with the single use, and the combination of mancozeb and iprodione enhanced the inhibitory effect on spore germination and mycelial growth , Significantly increased the field efficacy.