With the adjustment of agricultural structure, Beijing will develop highly efficient and water-saving agriculture. In the water-saving cultivation mode, the risk of re-emergence of wheat pests and weeds, especially the underground pests and wheat stubbles, increases. Autumn sowing is one of the pivotal periods for the prevention and control of diseases, pests and weeds in wheat. The prevention and control of autumn sowing and weed control will not only control the pests and diseases of this period, but also reduce the source of diseases and weeds in winter, laying a good foundation for the harvest of wheat in the following year.

Strengthen pest and disease monitoring and forecast

Do a good job of monitoring pests and weeds, find out the local pests and weeds, local conditions, and guidance for classification, which is the basis for the prevention and control of pests and weeds.

Strengthen inspection and quarantine and market supervision

The seed business department must strengthen seed quarantine and quality inspection when transporting wheat seeds. It is strictly forbidden to transfer seeds from infected and diseased areas to prevent the introduction of dangerous pests. All districts and counties shall popularize the varieties that are suitable for planting in the region according to the characteristics of local diseases, pests and weeds.

Seriously grasp the seed agent treatment

Pre-sowing of wheat seeds or dressing seed dressings is the main measure to prevent and control underground pests and prevent the occurrence of wheat-borne diseases, soil-borne diseases, and powdery mildew, leaf rust, wheat spiders, and planthoppers in autumn. It is also a key measure to ensure the whole seedlings and seedlings of wheat. All districts and counties shall scientifically adjust the types of coating or seed dressing agents according to the local occurrence of pests and diseases to ensure that wheat “white seeds” do not fall to the ground.

The seed coating insecticide may use 600 g/L imidacloprid seed coating agent coated with 0.2% of seed amount, and the bactericide may use 60 g/L tebuconazole seed coating agent at 0.03% or 2.5% of the seed amount. Fludioxonil is coated by 0.2% of the seed amount; 50% phoxim EC can be used as seed dressing insecticide, and 50% carbendazim WP can be used to select seed 0.2% of the seed amount. Insecticide And fungicides can be mixed with liquid dressing, heap stuffy 4-6 hours, dry after sowing. Phoxim dressing should pay attention to dark operation.

Implement pest control at the seedling stage in a timely manner

The poor resistance of weeds in autumn wheat fields is a favorable time for chemical weed control. Chemical weeding can be carried out in accordance with the occurrence of weeds in the field. Chemical weeding should be carried out after the wheat tillering stage and weed 2-4 leaf stage. For wheat fields dominated by sow weeds, such as sow plant and leeks, 10% of tribenuron-methyl WP may be used per acre, or 1 gram of 75% tribenuronic-ethyl sulfate, or 72% 2,4- 50ml of butyl phthalate cream is used for prevention and treatment; 70% of chlorsulfuron-methyl dispersible granules can be used to prevent and treat 70% of cornfields, such as bromegrass and gramineous weeds. When the wheat stubble and the planthopper are serious in the wheat field and reach the prevention and control index, it is necessary to conduct chemical prevention and control in time to prevent damage to the wheat seedlings and transmission of the virus disease.

Actively carry out technical guidance and training

During the autumn sowing of wheat, the plant protection technical personnel at all levels went into the production line to widely promote pest and weed control technologies and knowledge of the safe use of pesticides to ensure that the plant protection technology was put in place to prevent the occurrence of poisoning and phytotoxicity caused by improper use of pesticides.

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