Winter wheat weed control technology

With the changes in the farming system and the impact of climatic factors, coupled with heavy pest control and light weed control by farmers, the number of weeds in the wheat field has increased in recent years, and the scope of occurrence has continued to expand. The damage has been aggravated and wheat production has been reduced. The decline in quality has seriously affected wheat production.

Before the winter is the peak period of weed sprouting and unearthing, the excavation rate is more than 85%, and the grass is young, and the drug resistance is weak. Therefore, it is necessary to change the concept of “not seeing hazards without drugs” and the long-established habit of controlling weeds in the spring. The technical personnel of towns and villages should actively go deep into the fields to publicize and popularize the autumn and winter prevention techniques for wheat fields and weeds for the next year. The foundation for the bumper harvest.

1, the correct choice of suitable herbicides.

(1) Broad-leaved weed control. My county is mainly based on sow wormwood, leeks, and other broad-leaved weeds. Superstars, thifensulfuron-methyl, tribenuron-methyl, isoproturon, and other pesticides can be used. Mu with tribenuron-methyl 10 grams -15 grams, 30 kilograms of water evenly sprayed.

(2) Control of grass weeds. In recent years, some wheat fields in our county have encountered bromegrass. Therefore, the wheat fields dominated by brome are selected from Shima, Sijiahu or Kwangma, and 3% Shima Oil Suspending Agent is used for 20-35 ml per mu.彪 tiger 3 grams) water 30 kg spray, when dispensing with a small amount of water into the mother liquor, according to the dilution of water, stir evenly after the uniform spray.

(3) For the mixed fields of grass weeds and broad-leaved weeds, superstars or benzulfuron plus thrips or Shima may be used in combination.

2, correctly grasp the weeding time. Because the weeds in this county are dominated by broad-leaved weeds, the control time can be controlled from late November to early December. Spray control is performed when the surface of frozen water is wet, or 3-4 leaves of wheat and 2-3 pieces of weeds. When the leaves are guarded. The general temperature is not less than 10 degrees.

3, the problem of attention.

(1) Strictly control the amount of medication, the period of application, and the amount of water used. The spray should be even and thorough.

(2) Select suitable weather. Herbicides should not be used in inclement weather.

(3) After the application of the drug to be thoroughly cleaned to avoid causing damage to other crops.

(4) The removal of the land with poor control of chemical weeding should be done manually.

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