图三、在土壤中，温度对于瓜类蔓枯病菌柄孢子存活的影响。

Fig. 3. Effect of temperatures on survival of pycnidiospores of Didymella bryoniae in soils.

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图四、在土壤表面、地表下5、15及30公分土壤深度的瓜类蔓枯病菌柄孢子存活情形。

Fig. 4. Pycnidiospore survival of Didymella bryoniae placed at soil surface, 5, 15, and 30cm below ground at field.

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