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植物保护是农业增产的一个重要因素。它的主要任务是要经济、简便、安全、有效地防治病、虫和杂草的危害。农作物在生长发育过程中,或在农产品的运输、贮藏期间,都会遭受多种病、虫的侵害而影响产量和品质。据第九届国际植物会议联合国粮农组织估计,病、虫和杂草所造成的损失约占农产品的35%。世界其他各国也统计证明,每年农作物因病,虫和杂草所造成的损失中,虫害占40%。我国每年病、虫和杂草的发生面积达20余亿亩次。由此可见,植物保护工作是确保农业增产的重要一环。
Plant protection is an important factor in agricultural production. Its main task is to economically, simply, safely and effectively prevent the hazards of diseases, insects and weeds. Crops in the process of growth and development, or during transport, storage of agricultural products, will suffer from a variety of diseases, insects and affect the yield and quality. According to the Ninth International Flora Conference, the UN Food and Agriculture Organization estimates that the losses caused by diseases, insects and weeds account for about 35% of the agricultural products. Statistics from other countries in the world also show that pests account for 40% of the annual crop losses caused by diseases, insects and weeds. Each year, the area of disease, insects and weeds in China reaches more than 20 billion mu. This shows that plant protection is an important part of ensuring that agricultural production is increased.