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大小麦黑穗病主要是因麦种玷染病菌以后引起的,所以最好的防治方法是实行种子消毒。种子消毒的方法很多,根据近年来不少地区的经验,应用石灰水浸种消毒,既可兼治种子内外带菌的一切病害,而且操作简便,取材容易,劳力省,费用少,对种子没有害处,并有刺激生长、提高产量的作用。据试验,小麦用1%石灰水浸种,在定温的情况下,经摄氏20度浸4天,25度浸3天,30度浸2天后,对小麦散黑穗病的防治效果都达100%,对稈黑粉病的效果各为98.1%、99.8%、98.1%,对腥黑穗病的效果各为100%、100%、98.5%,而产量可增加2～3%。大麦经过同样处理,对坚黑
Large and small wheat smut is mainly caused by wheat germ caused by bacteria, so the best way to prevent and control is the implementation of seed disinfection. Seed disinfection of many ways, according to the experience of many regions in recent years, the application of lime water soaking disinfection, can both disease and disease inside and outside the carrier, but also easy to operate, easy to extract, labor provinces, less costly, and no harm to the seeds A stimulating growth, increase the role of production. According to the experiment, the wheat was soaked in 1% lime water, and the control effect on wheat smut was 100% at 4 ℃ for 20 ℃, 3 days for 25 ℃ and 2 days for 30 ℃. The results showed that the effects on stalk smut were 98.1%, 99.8% and 98.1%, respectively. The effects on stinky smut were 100%, 100% and 98.5% respectively, but the yield could increase 2-3%. Barley after the same treatment, on the black