谷子白发病在我省发生相当普遍,危害严重。一般发病率在5%以上,严重地块达20%以上。自三十年代以来人们就从不同角度来寻找防治途径,然而迄今除石灰水浸种,五氯硝基苯拌种结合施药土,拔白尖,轮作等既费工又低效的方法外,一无抗病品种,二无高效农药,是生产中急待解决的问题。1980年由国外引入甲霜安(瑞毒霉)经我省多点试验,防治效果在90%以上,1981年在全省9个点进行中间试验,11个点进行大面积生产示范,进一步肯 Mildew white hair occurs quite common in our province, endangering serious. The general incidence of more than 5%, a serious block up to 20% or more. Since the 1930s, however, people have been looking for ways to combat the disease from different perspectives. However, so far, in addition to lime soaking in water, A disease-free varieties, two non-efficient pesticides, is the production of urgent problems. In 1980, the introduction of a cream by foreign countries (Swiss mold) by our province more tests, prevention and control of more than 90% in 1981, 9 points in the province for intermediate testing, 11 large-scale production demonstration, and further Ken