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薏苡黑粉病菌(Ustilago coicis Brefeld)的厚垣孢子在10～30℃范围内均能萌发,但较适温度为25～30℃。除温度外,水分也是影响厚垣孢子萌发的主要因素之一。厚垣孢子萌发对营养物质要求不严,尿素对厚垣孢子萌发似有一定的抑制作用。用粉锈宁、拌种灵、多菌灵、禾穗胺等杀菌剂按种子重量的0.4%拌种(干拌),或用多菌灵500倍液浸种15分钟消毒种子,防效好、产量高,可在薏苡生产上试用。
Chlamydospores of Ustilago coicis Brefeld germinated within the range of 10 ~ 30 ℃, but the suitable temperature was 25 ~ 30 ℃. In addition to temperature, water is also one of the major factors that affect spore germination. Chlamydospore germination on the strict requirements of nutrients, urea chlamydospore germination seems to have some inhibitory effect. Spraying seed with 0.4% of seed weight (dry mix) by using triadimefon, seed dressing spirit, carbendazim and woosamine, or soaking seeds with carbendazim 500 times for 15 minutes, good control effect and high yield , Coix can be used in trial production.