一、前言谷子为陕北主要粮食作物,惟历年来亩产量很低。如延安专区仅83斤,榆林专区仅40斤。自然灾害为谷子歉收的重要原因,就中虫害以(虫全)谷虫为最烈。(虫全)谷虫系陕北习用名称,原意包括各种钻入谷秆中的害虫而言,目前则似专指危害最烈的粟灰螟。 I. Preface The millet is the main food crop in northern Shaanxi, but its output per mu has been very low over the years. Such as Yan’an area only 83 pounds, only 40 pounds Yulin area. Natural disasters as an important reason for the failure of the millet, the insects to (insects) cereal insects as the strongest. (Worm all) Valley insects Department of northern Shaanxi habitual name, originally intended to include all kinds of pests into the stalks, the current is specifically refers to the hardest hit corn borer.