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据有关资料报导,我国每年因直接危害作物或传播病虫害的恶性杂草的为害所造成粮食减产达150亿斤,使农业生产受到严重的经济损失。
According to the information reported, every year, the output of grain in our country is reduced by 15 billion catties due to the damage caused by the direct damage to crops or the spread of pests and weeds. As a result, serious economic losses have been caused to agricultural production.