在1978年和1979年,印度对波罗蜜园进行了调查,发现一种严重的波罗蜜幼果腐烂病,从感病的果柄和果实中多次分离到黑根霉菌(Rhizopus nigricans Ehrenb.)。这种真菌引起未熟果实早落,导致损失果实30—75％。由于在果实发育早期,出现异常潮湿的天气,致使这一年的幼果腐烂病更为严重。在波罗蜜园用涕必灵和苯菌灵作试验 In 1978 and 1979, India conducted a survey of the Poro honey park and found a serious rot of the jackfruit young, Rhizopus nigricans Ehrenb., Isolated from susceptible stalks and fruit. This fungus causes immature fruit to fall prematurely, resulting in a loss of 30-75% of the fruit. Due to the unusually humid weather in early fruit development, the young fruit decay disease was even more serious this year. Test with diphtheria and benomyl at the Polo honeymoon