Comprehensive Prevention and Control Technology of Vegetable DLs eases and Pests in Shandong Province

Abstract An in-depth research and practice has been conducted on vegetable diseases and pests in Shandong Province, and the principles of comprehensive and ecological control of diseases and pests are put forward, including agricultural control measures such as crop rotation, field cleaning, fertilizer and water management, physical control measures such as catching and killing, trapping, blocking, photoelectric energy treatment, biological control measures such as the use of natural enemies, pathogenic microorganisms, other beneficial organisms and metabolites, and scientific and rational chemical control measures. In the process of comprehensive treatment, all kinds of treatment measures should be integrated to make them coordinate with each other and exert the maximum effect, thus controlling the harm of diseases and pests within the economic threshold level. 2.1 Comprehensive principle In the implementation of comprehensive management, it is necessary to coordinate the use of agricultural, physical, biological, and chemical controls, in order to control the harm of diseases and pests effectively. 2.2 Ecological principle Based on the relationship between the environment and diseases and pests, comprehensive management can comprehensively solve the problem of diseases and pests by analyzing the relationship between various ecological factors from the vegetable field ecosystem. 2 . Root knot nematodes of vegetables can be controlled by crop rotation with non-host vegetables. 3.2 Garden cleaning Some pathogens and pests have a wide range of hosts, and field weeds, especially perennial weeds, are often the primary sources of infection of some vegetable pathogens and the overwintering sites or shelters of pests. [...]eradicating weeds in the field is of great significance for the prevention and control of diseases and pests. Due to large reproduction of microorganisms, the products can be manufactured in factories and used in the same way as chemical pesticides. [...]a variety of microbial insecticides and fungicides have been developed and gradually commercialized. 5.3 Other beneficial organisms and metabolites It mainly involves the use of genetically sterile insects, agricultural antibiotics, hormones and beneficial animals and plants. 6 Chemical control Chemical control is an important part in the comprehensive management of diseases and