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近些年,为解决农药的污染问题,人们曾进行多种努力来减少或代替化学农药的使用。这些工作虽也取得了明显的成效,如生物、物理防治的研究和实施,农作物抗病虫品种的培育、推广,以及昆虫激素的研制、应用等等,但还不能大量的代替化学农药,特别是对暴发暴食性病虫害的防治。这就促使人们从改进施药技术上减轻农药的污染,如在生产中推广使用的超低容量喷雾技术,就是这方面较突出的成果。超低容量喷雾虽
In recent years, efforts have been made to reduce or replace the use of chemical pesticides to solve the problem of pesticide pollution. Although these achievements have also achieved remarkable results, such as the research and implementation of biological and physical prevention and control, cultivation and popularization of crops resistant to insect pests and diseases, the development and application of insect hormones, etc., they can not replace chemical pesticides in large quantities Prevention and treatment of outbreaks of opiate pests and diseases. This has prompted people to improve the application of pesticide technology to reduce pollution, such as the promotion of the use of ultra-low-volume spray technology is the more outstanding results in this area. Although ultra-low volume spray