1. No adverse chemical reactions (such as hydrolysis, alkaline hydrolysis, acid hydrolysis, or redox reactions) occur between the mixed varieties to ensure normal efficacy or synergies, nor do they affect the physical properties of the pharmaceuticals (such as emulsification and reduced suspension rate) Wait). For example, most organophosphorus insecticides cannot be mixed with Bordeaux mixture, lime sulfur, etc. Powders cannot be mixed with wettable powders or soluble powders.
Second, after mixing different types of pesticides, crops can not be caused by phytotoxicity. For example, organophosphorus insecticides mixed with propranilium can cause phytotoxicity to rice. Bordeaux mixture is mixed with lime sulfur to make crops produce phytotoxicity.
3. After pesticides are mixed, no toxicity will be added to ensure the safety of humans and animals.
Fourth, mixing should be reasonable, including a reasonable mix between varieties, such as control of soybean field grass weeds, single use to catch net, cover grass can be controlled, and then mix the two, although the pharmacy stability is feasible, but it is mixed Unreasonable allocation does not increase efficiency, nor does it increase the scope of prevention and control. Mixing is not necessary. Pesticides are mixed to save time and improve economic efficiency. If the mixture is made into a mixture, the additional cost is prohibitive.
Fifth, pay attention to the antagonism between pesticide species to ensure the mixed effect. For example, Bendazol is used in combination with the net to reduce the control effect of grass weeds due to antagonism.
Insect pheromones are compounds used by insects to represent various information such as aggregation, foraging, mating, and alerting. They are the chemical molecular language of insect communication. At present, the basic control measures for pests in agricultural production mainly rely on chemical pesticides, but the long-term uncontrolled use of chemical pesticides has brought many side effects. The first is the emergence of pest resistance, which causes the use of drugs and drug concentrations to increase, the cost increases year by year, and the prevention and control of increasingly difficult; the second is to disrupt the ecological balance, while controlling a large number of natural enemies were killed, causing the pupae of secondary pests; Third, it pollutes the environment. A large amount of pesticides remain in crops, soils, rivers, lakes, and seas, and they are enriched in the human body through the form of food chain, causing another harm to humanity. Therefore, relevant research departments in many countries are currently working hard to explore and study new approaches and technologies for pest control. These studies include: the development of new, efficient, environmentally friendly, low-toxic, low-residue chemical pesticides; natural enemy insects and microorganisms The use of pesticides; insect sterilization technology and the application of insect hormones; among them, the research on the use of insect hormones, especially insect sex pheromones for pest control, is receiving increasing attention and attention.
Research on insect pheromone has been developing rapidly. Since the first insect pheromone Bombykol, has been isolated and identified, more than 2,000 insect pheromones and their analogs have been identified and synthesized worldwide, of which more than 100 insect pheromone To achieve commercial production, the production and research of Lepidoptera sex pheromones is the most extensive and comprehensive.
Insect communication, Including Sex pheromone, Collection pheromone,Alert pheromone, Tracking pheromone
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