红苕(甘薯)系我县人民群众的主要粮食之一。历年来,由于黑斑病、软腐病等的传播蔓延,红苕贮藏期间腐烂损失十分严重,每年红苕往往烂坏40—50％,直接影响群众生活和下年栽种面积。群众说:“红苕好吃能高产,保管不善丢一半。”红苕贮藏烂窖问题,一直是生产上的“老大难”。 一、示范推广的效果 在毛主席革命路线指引下,我县广大干部群众在农业学大寨运动中,遵照毛主席(?) Red snapper (sweet potato) is one of the main foodstuffs for the people in our county. Over the years, due to the spread of black spot disease and soft rot disease, rotting loss of red crabs during storage is very serious. Each year, red crabs tend to be damaged by 40-50%, which directly affects the life of the masses and the planting area next year. The masses said: “Hongjian delicious to high yield, poor storage lost half.” Red calamus storage problems, has always been the production of “hardcore.” I. The Effect of Demonstration and Promotion Under the guidance of Chairman Mao’s revolutionary line, the cadres and masses in our county, in accordance with Chairman Mao’s (?) Policy,