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近年来，我市小麦散黑穗病有蔓延趋势。据调查，２０００年发生面积０．２万ｈｍ２，严重地块病株率达５％以上，严重影响小麦产量及其品质，降低了商品价值和食用价值。现将该病的发生规律及防治措施作如下探讨。 一、发病症状 病株较健壮植株矮，抽穗比健株早，穗小畸型。染
In recent years, the city of wheat scattered smut has a tendency to spread. According to the survey, an area of 2000 hectares occurred in 2000 and a disease rate of more than 5% in serious mass plots has seriously affected the yield and quality of wheat and lowered the value of commodities and edible value. Now the incidence of the disease and prevention measures for the following discussion. First, the symptoms of diseased plants shorter than the robust plants, heading earlier than healthy plants, spike small malformations. dye