Application of pesticides in pollution-free tea production

(Agricultural Wealth Network) How to prevent pollution-free tea garden pests? In the process of pest control, we should apply modern sustainable agricultural concept, start from tea garden ecosystem, comprehensively apply various control measures, and popularize harmless pest control technology. Agricultural control must be used, and prevention and control schemes should be prepared in advance, biological pesticides and environmentally compatible pesticides should be preferred, chemical pesticides recommended in pollution-free tea production regulations should be reasonably used, and prevention and control records should be carefully made.

Harmless control measures: pollution-free tea garden pests and diseases of harmless public control measures are agricultural control, physical control, biological control. Harmless control measures will not cause environmental pollution and will not cause pesticide residue problems, so they should be preferred.

Use biological pesticides or environmentally compatible pesticides: commercial biological preparations: such as Bacillus thuringiensis BT preparation, tea looper virus preparation, tea caterpillar virus preparation, whitefly fungus, etc. Botanical pesticides such as azadirachtin, matrine, nicotine, rotenone, pyrethrins and so on. Mineral source pesticide lime half amount Bordeaux mixture, etc. They are the first choice for controlling diseases and insect pests in tea gardens in the future.

Rational use of chemical pesticides: select appropriate pesticide varieties and formulations for control objects. Pesticides should be applied in strict accordance with the prescribed dosage, application times, application methods, appropriate application period, safety interval period, precautions, etc. It is advisable to treat multiple pesticides with one drug or reasonably mix pesticides. It is strictly prohibited to use prohibited pesticides.

Pay attention to the control index and appropriate period of pesticide application: the technical regulations for pollution-free tea production explain the control index and appropriate period of main pests and diseases. Before chemical control, careful reference should be made.

Pesticide varieties: high efficiency, low toxicity and low residue pesticide varieties can be used with restrictions. The use limit of DDT, BHC, parathion (1605), methyl parathion (methyl 1605), methamidophos, acephate, omethoate, pentachlorophenol sodium, chlordimeform, carbofuran, dicofol, isocarbophos, cypermethrin, laifuling and their mixtures are prohibited.

Application method: conventional agricultural sprayer was used, and low volume spraying method was selected. Sweep and spray the tea bush; the pests in the middle and lower parts of the tea bush adopt lateral low-volume spray. Application rate and safety interval: strictly follow GB4285 and GB. T8321 (Appendix C Pesticide varieties and safety standards for pollution-free tea gardens).

Non-production season selection of mineral pesticides: such as: lime half-amount Bordeaux mixture, etc.