近年来植保工作的进展,不仅表现在防治技术的发展,更重要的是通过实践进一步提高了对植保工作规律性的认识,即必须实行综合防治。虽然农药的推广应用,在农业、林业和畜牧业上,取得了显著的成效,但大量连续使用农药,也产生了若干不良后果。如农产品、空气、土壤和水域受到污染,威胁人类健康;害虫产生抗药性,防治困难;杀伤了许多有益生物,如鱼类、鸟类、野生动物,特别是益虫。由于害虫的天敌大量杀伤,有些主要害虫发生更为严重,有些次要害虫上升为主要害虫。我省占全国不到2%的耕地上,却使用了占全国10%左右的农药,单位面积平均用药量比全国高3.8倍多,加上有些不合理用,也出现不少副作用,这是一个值得重视的问题。此外,耕作制度的不断改革,栽培技术的提高,新品种的 In recent years, the progress of plant protection work is not only reflected in the development of prevention and treatment technologies, but more importantly, the practice of further strengthening the understanding of the regularity of plant protection work, that is, comprehensive prevention and control must be implemented. Although the promotion and application of pesticides have achieved remarkable results in agriculture, forestry and animal husbandry, the continuous use of pesticides in large quantities has also had some adverse consequences. Such as agricultural products, air, soil and water are polluted, threatening human health; pests produce resistance, control difficulties; kill many beneficial organisms, such as fish, birds, wildlife, especially beneficial insects. Due to extensive killing of natural enemies of pests, some of the major pests occur more severely and some of the major pests rise to major pests. The province accounts for less than 2% of the country’s cultivated land, but uses about 10% of the country’s pesticides. The average dosage per unit area is 3.8 times higher than that of the whole country. Coupled with some unreasonable uses, many side-effects have also emerged. A problem that deserves attention. In addition, the continuous reform of farming system, cultivation techniques, new varieties