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供试的两种植物挥发油─—麻黄油和蛔蒿油，用２０００μｇ／ｇ浓度可完全抑制薏苡黑粉病菌冬孢子的萌发。用２５００μｇ／ｇ的麻黄油浸种，对薏苡黑粉病的防病效果达６３．２％。
The two plant volatile oils tested, hemp butter and chrysanthemum oil, were able to completely inhibit the germination of the sphaerotheca grisea teliospores at a concentration of 2000 μg/g. Seed soaking with 2500 μg/g hemp butter resulted in a 63.2% disease prevention effect against smut.