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经过３年的调查研究及取样分析了Ｈ·１１６４８麻干茎腐病的发生与营养元素的关系。在钙元素充足的Ｈ·１１６４８麻的麻园中，植株仍然严重感病，病株叶片营养分析的结果也表明，病株中不缺钙。
After three years of investigation and sampling and analysis of the relationship between the occurrence of H · 11648 hemp stem rot and nutrient elements. The plants were still severely susceptible in the H-11648 hemp nursery with adequate calcium content. The results of nutritional analysis of diseased leaves also showed that there was no calcium deficiency in the diseased plants.