高脂膜防治山楂挂灰试验近几年，山楂挂灰在我县发生普遍，严重影响山楂果实的商品价值。山楂挂灰就是在山楂果实表面附着一层灰褐色的煤状物质。为了探讨防止山楂挂灰的有效途径，我们参照苹果蝇粪病和煤污病的发生规律与防治措施，于１９９２年在本县辛寨镇大峪村进行了... High-fat film control hawthorn hanging ash test In recent years, the hawthorn hanging ash occurs in my county, seriously affecting the value of hawthorn fruit products. Hawthorn hanging ash is hawthorn fruit surface attached to a layer of brown coal material. In order to explore the effective way to prevent hawthorn hanging ash, we refer to the occurrence of apple fly feces disease and coal pollution law and prevention and control measures, in 1992 in the county Xinzhaizhen Dayu Village carried out ...