我县向无薯瘟病,1974年宁州公社良塘大队黄磨生产队和赤江公社红光四队开始另星发生,当时未引起注意,加以防治,乃至近年蔓延发展危害日趋严重。1978年发展到大坪、征村等4个公社7个大队19个生产队,发病面积217亩,损失粮食8万多斤。1979年又扩大到42个生产队,发病面积905亩,损失粮食20余万斤,其中,病情严重的285亩,损失率达95%以上,有9个生产队 My county to no landslide, 1974 Ninglang commune Liangtang Brigade Huang mill production team and Red River commune Red four teams began another star occurred, did not pay attention to, to prevent and control, and even in recent years the spread of the development of the increasingly serious harm. In 1978, it developed into 19 production teams of 7 brigades of 4 communes, including Daping and Zhengcun, with a disease area of ​​217 mu and a loss of more than 80,000 kilos of grain. In 1979, it expanded to 42 production teams with an area of ​​905 mu and a loss of more than 200,000 jin of grain, of which 285 were seriously ill with a loss rate of over 95% and 9 production teams