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.
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.
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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