The lodging that occurs before the grain-filling period of wheat is called "early lodging". Generally, it can be restored to an upright position to varying degrees due to the "light head". Lodging that occurs in the late stage of filling is called "late lodging". Because the "head weight" is not easy to fully restore upright, often only the ear and the under-ear stem can raise the head. Remedial measures should be taken in time to reduce the loss of lodging.
2. Reasons for Lodging
Climate factors. During the wheat filling period, large areas of wheat lodging can occur due to rainfall and strong winds.
Improper cultivation measures. If the sowing rate is too large, the stalks will be thin and prone to lodging. In late May, about ten days before the wheat was fully ripe, the high-yield fields with wheat yellow water were irrigated. The soil was soft, and it was prone to lodging to varying degrees in wind and rain. In addition, there are also certain differences in the lodging resistance of different wheat varieties.
3. Remedial measures
1. To dredge the drainage ditch in the field and remove the accumulated water. Drain the wheat in time after the heavy rain, so as not to cause wheat lodging again and affect the later growth and normal harvest of winter wheat.
2. After the rain has passed and the weather is clear, use bamboo stalks to gently shake off the rain drops on the stems and leaves to reduce the pressure to help them raise their heads, but do not provoke them and disrupt the direction. Or use your hand to help the wheat and bale handles to reduce mildew, facilitate ventilation and light transmission, enhance photosynthesis, increase grain weight, and to a certain extent can restore the loss caused by lodging.
3. Spray the phosphorus and potassium source reservoir (99.7% high-purity potassium dihydrogen phosphate) at 150-200 grams per mu with 30 kilograms of water to promote growth and grouting.
4. Take prevention-oriented and integrated control measures against wheat sheath blight and aphids, and spray pesticides in time to increase wheat resistance and lodging resistance, and reduce losses through integrated control.
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