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据联合国粮食与农业组织(FAO)估计,世界粮食收获前遭受病虫草害等损失平均约为30—35％。其中因杂草引起的损失为10％左右。据估计我国因病害和虫害造成的粮食损失约占总产10％。而草害造成的粮食损失约等于病害和虫害造成的损失之和,即也约为10％。每年因杂草危害损失粮食达数百亿斤。1983年11月在英国布来顿(Brighton)召开的第十届国际植保会议上关于“植物保护要保障农作物安全、增产,要为人类作贡献”的号召具有现实和长远意义。杂草防除是植保工作的重要内容。
According to the UN’s Food and Agriculture Organization (FAO), losses such as pests and diseases before the World Food Harvest are estimated to average about 30-35%. The damage caused by weeds is about 10%. It is estimated that food losses caused by diseases and insect pests in our country account for about 10% of the total output. The loss of grain caused by grass damage is about the same as the sum of the losses caused by diseases and insect pests, which is about 10%. Every year weeds damage due to loss of food amounted to tens of billions of pounds. The call for plant protection to ensure crop safety, increase production and make contributions to human beings at the Tenth IPR Conference in Brighton, UK, in November 1983, has real and long-term implications. Weed control is an important part of plant protection work.