一片冰心献金叶———记长葛市科协主席、长葛市农用生物药厂厂长刘庆伟特约记者金向营石乔一、走进花叶病８０年代初，花叶病成了烟草生产的威胁性病害，据资料表明，发病烟田比正常烟田一般亩产减少３０－８０％，病株叶面轻着呈现黄、绿镶嵌的斑块，叶片变形、变小、减... An ice heart offer gold leaf --- in mind Changge Association for Science and Technology, Changge City, director of agricultural biopharmaceutical plant Liu Qingwei special correspondent Jin Xiangying Shi Qiao a, into the Mosaic early 80s, Mosaic became tobacco production According to the data, the incidence of tobacco fields is 30-80% less than that of normal tobacco fields. The leaves of the diseased plants are lightly yellow and green inlaid plaques, and the leaves deform, become smaller and less ...