植物病虫害是农业生产中的重要的问题之一,各种栽培作物,在其生长过程中和产品收获后都遭受不同程度的损失,不仅造成作物的大幅度减产,轻发年损失可达总产的10￣15%,重年可达30%,而且还会使农产品品质变劣,人畜中毒,同时,为减轻病虫害所造成的损失,而采取的防治措施,又增加了生 Plant diseases and insect pests are one of the most important problems in agricultural production. All kinds of cultivated crops suffer different degrees of losses during their growth and after harvest, which not only leads to a sharp reduction in crop yield but also to total output in light-weight years Of 10 ~ 15%, heavy years up to 30%, but also make the quality of agricultural products worse, human and animal poisoning, at the same time, in order to reduce the damage caused by pests and diseases, and take prevention and control measures, but also increased health