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从葡萄表面分离到一株链霉菌Ｈ２。甜瓜经过Ｈ２菌剂处理，在室温（１５～２０℃）贮藏了６０天。Ｈ２菌剂能有效地防止甜瓜的霉腐并且对瓜的风味没有影响。
Streptomyces H2 was isolated from the grape surface. Melon after H2 agent treatment, stored at room temperature (15 ~ 20 ℃) for 60 days. H2 bactericide can effectively prevent melon rot and has no effect on melon flavor.