随着城市建设的迅速发展,城市园林绿化的花、草、树木尽展风采。但由于绿化格局的调整,改变了原有植物结构和病虫结构,有的地方加重了病虫为害的程度,对环境影响很大,加上大量喷施化学农药,对环境造成二次污染,应采取以下预防对策: 1、引进植物要严格检疫国际、国内规定植物检疫病虫害都寄生在对应的植物寄主上,可以随植物及其产品的调运而迁移、 With the rapid development of urban construction, flowers, grasses and trees in urban landscaping have become more and more popular. However, due to the adjustment of the greening pattern, the original plant structure and pest structure have been changed. In some places, pests and diseases have been aggravated, which has a great impact on the environment. In addition, spraying large amounts of chemical pesticides causes secondary pollution to the environment, Should take the following preventive measures: 1, the introduction of plants to be strictly quarantine International and domestic regulations Phytosanitary pests and diseases are parasitic on the corresponding plant host, with the transfer of plants and their products and migration,