Clever wheat lodging
Wheat lodging is divided into root lodging and stem lodging. After lodging, it has a great influence on wheat yield and quality. Therefore, no matter what kind of lodging, you have to manage it in spring.
Deep hoeing to cut off the roots to suppress ineffective tillers on wheat fields with a total number of stems per mu of more than 800,000 in the spring, and wheat fields with more than 1 million tillers per mu in spring can easily cause field canopy, poor ventilation and light transmission, and stem support Low force may cause lodging. Generally, deep intertillage is carried out before or at the beginning of greening to cut off part of the root system, reduce nutrient and water absorption, resist ineffective tillers, control the elongation of the base of effective tillers, and improve the lodging resistance of wheat.
Reasonable fertilization and watering For wheat fields that have a tendency to grow, if the fertilizer and water are sufficient or excessive in spring, especially the amount of nitrogen fertilizer is too large, it will cause the wheat to grow longer, the internodes are long, and the straws are thin, which may cause lodging. For this part of the wheat fields, the time of topdressing and watering should be postponed to the jointing stage, the amount of nitrogen fertilizer should be controlled, and phosphorus and potassium fertilizer should be increased.
For wheat fields that are likely to fall under chemical control, spray 15% Paclobutrazol 40g-50g, or 5% Uniconazole 30g-40g, or 25% Mepiquat 15ml per mu before getting up to jointing. -20ml, mix with water 30kg-40kg, spray evenly on the wheat seedlings. Note that the chemical control of wheat must be carried out before jointing, and the preventive effect will not be achieved after jointing.
In the later watering, pay attention to the strong wind and the grouting period. Watering or watering just after the strong wind may cause root collapse. Always pay attention to the weather forecast before watering to prevent lodging caused by strong winds.
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