Right now, wheat is basically planted everywhere, but everyone should not be too relaxed. The subsequent management of wheat seedlings not only relates to the safe winter of wheat, but also directly relates to the future growth and output of wheat. Specific management can start from the following aspects.
Timely inspection seedlings, make up seedlings, keep seedlings
Wheat is a closely planted crop, lacking seedlings such as lack of land, so the whole seedlings are the basis for high wheat yield. In order to meet the requirements of the whole wheat seedlings, the seedlings are generally 3 inches without seedlings, and the seedlings with 5 inches without seedlings are broken ridges. For this reason, after the wheat seedlings are established, the seedlings at the top of the ground and the seedlings on the ground must be promptly filled.
Filling method
◠Immersion seeding and replanting First soak the same variety of wheat seeds in warm water of 30-35°C for 4 hours, then remove the wheat seeds and put them on the sunny place. Cover with a plastic cloth and stifle for a day. When the wheat germs show a small white head, Immediately sow.
â— The wheat seedlings can be transplanted after the wheat seedlings reach the third-leaf stage and they can be transplanted after the tillering period. The young wheat seedlings from the dense areas are placed in small pits that have been excavated with bamboo in advance at the seedlings, and they are poured little by little. Water buried in soil, practical, so that you do not mind, under the roots, wheat seedlings are easy to survive and grow.
Three-leaf repression
After the wheat seedlings grow to the three-leaf stage, they must rely on their own photosynthesis to produce nutrients to supply the growth and development needs of the wheat seedlings. At this time, the wheat seedlings have few roots and the leaves are small, and it is urgent to keep up with the management and promote the growth of the roots and the strong seedlings.
Therefore, the use of a light-pressing device in the wheat trifoliate stage for repression at the seedling stage is conducive to promoting the early emergence of strong wheat seedlings. At the same time, the repression of the winter wheat seedlings before the winter is also an effective measure to control the growth of the strong, easy and effective.
Precautions
When repressing, it is necessary to grasp the principle of “dry pressure without ground pressure, cloudy pressure without pressure, and pressure in the morning without pressureâ€.
Weeding before winter
In the 3-5 leaves of wheat seedlings, the weeds in the field have a positive 2-3 leaf stage, and the grass age is small. They are sensitive to pesticides, low in drug resistance, and have a good chemical weed control effect.
The platform pushed wheat pre-winter weeding articles last week. Click on the blue words below for more details.
Why does wheat have to weed before winter?
Controlling seedling diseases and pests
Major pests
Wheat seedling pests mainly include aphids, sloughs, earthworms, and tigers.
Locusts, ashes, earthworms, earthworms: Eradication of pest habitats and hosts, reducing the number of pests. After the wheat is seedlings, use 10% imidacloprid wettable powder 1000 times to spray 5-10 meters around the wheat field to prevent pests from entering and prevent viral diseases.
Small ground tigers and other underground pests: after the emergence of wheat with 3% phoxim granules 6-8 kg per acre, Shun ridge applied in the roots of wheat seedlings for treatment.
Major diseases
Wheat seedling diseases mainly include rust, full-bleeding, powdery mildew and sheath blight.
Rust, powdery mildew: can use 15% triadimefon WP 50 grams or 20% Triadimefon EC 40 ml, watered 50-70 kilograms, 30 kilograms per acre of fluid, even field spray. As for the disease center, it is necessary to focus on multi-drug use, spray strictness, penetrate thoroughly, and prevent proliferation and re-infection.
Full-bleeding disease: In the wheat seedling stage, use 20% triamcinone EC per acre 120-200 ml, watering 50-75 kg, spraying wheat seedlings along the ridge, and using more than 30 kg per mu, so that the liquid Shunmai seedlings infiltrate Roots.
Rhizoctonia solani: For onsets of land, use 20% triamcinazole EC 150ml or 50% carbendazim WP 50-75g/mu, water 50-75kg per mu, spray on Shunmai Ridge, and the amount of liquid used per mu. More than 30 kg.
Foliage dressing
In the wheat seedling stage, the wheat field where the wheat seedlings are weak and the yellow leaves grow slowly due to insufficient base fertilizer, incomplete nutrients, or extensive site preparation may be sprayed with 99% high-purity potassium dihydrogen phosphate (recommended: source of phosphorus and potassium). To promote the early growth of strong seedlings of wheat, strong roots increase glutinous, from weak to strong, but also to control the longevity of wheat seedlings, but also enhance the resistance to disease, to ensure safe winter wheat.
Science frozen water
For the wheat field where the robber's harvesting is insufficient or where the soil is coarse and the soil is not practicable, the frozen water must be poured properly.
◠The suitable period of freezing water starts when the average temperature is 7-8°C, and ends at the daily average temperature of 5°C. The time is from the end of November to the beginning of December.
â— It is better to use clear water for freezing frozen water. It is good from 9am to 3pm. To drench the prevail, the amount of water to the next day is appropriate, and avoid flooding irrigation.
â— After thawing the frozen water, the buckwheat should be plucked in a timely manner to break the compaction to prevent soil cracks from damaging the roots. Weeding and protecting the roots can promote strong seedlings and promote root growth.
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