According to the results of wheat monitoring, due to the favorable sowing date of most wheat varieties, reasonable population development, and relatively complete cold-resistant exercise last year, wheat seedlings are in good condition this winter, laying the foundation for the harvest of this summer's grain.
The spring management is the key period for the growth and development of wheat rooting, glutinous rice growth, differentiation, and panicle growth. The management of spring wheat should be based on early, so that early preparation and early implementation can be achieved. According to the conditions of the seedlings, public opinion and weather conditions, they should be classified and guided, and reasonable water and fertilizer management and management measures should be taken to achieve root-to-root growth and grain growth during the return period, and the number of stand-ups, panicle conservation, the number of spikes at the jointing stage, and the number of attacks should be achieved. Capture wheat production.
Timely repression to protect the seedlings against drought. The suburbs have a lot of drought in spring, and management will use the wheat fields as the key measures for the management of spring wheat. During repression, we should master the principle of "dry pressure without ground pressure, cloudy days without pressure, and morning without pressure at noon", and grasp the warm weather (when the maximum temperature exceeds 3°C), after the topsoil and wheat seedlings are thawed. , so as not to cause the wheat seedlings to break. To suppress the wheat fields, compact the soil, seal cracks, maintain soil moisture, and reduce soil moisture evaporation. For overgrown wheat fields, timely suppression of wheat seedlings can also control the excessive growth of wheat seedlings.
See Miao Ding Fei Shui, fertilizer combined with water. Management of returning green crops to winter wheat should be based on different seedling conditions and adopt appropriate water and fertilizer management techniques. It should be combined with watering and fertilizing. Watering can promote the absorption of fertilizer nutrients by winter wheat. At the same time, it can also reduce the volatilization of fertilizer nutrients and increase the utilization of fertilizers.
For the three types of wheat fields with a population total number of stems less than 600,000/mu, water and fertilizer management measures should be adopted as soon as possible to increase the rate of overwintering and greening. It is recommended to combine spring watering, applying 10-15 kg of urea per mu, and 5-7 kg of potassium fertilizer. The total number of stems in the wheat field with a total stem number of 800-900 thousand per mu is recommended to be combined with irrigation. Urea 8-10 kg per mu and potassium fertilizer 3-5 kg ​​are recommended.
The wheat fields that are overgrown by some groups can be controlled by water control and fertilizer control at the time of returning to the green stage. Water supply and fertilization are delayed until the beginning of the jointing season. It is recommended that 6-8 kg of urea and 3-5 kg ​​of potassium be applied per acre.
Promote growth and spray potassium dihydrogen phosphate. In the jointing stage of wheat, foliar fertilization can be adopted to quickly supplement the wheat's need for phosphorus and potassium nutrients. Can be combined with pest control spray 0.5% potassium dihydrogen phosphate solution to promote the growth and development of wheat.
Pay attention to weather changes and prevent frost damage in early spring. Early frost damage (cold winter) is a common disaster in the early spring in the Beijing suburbs. To pay close attention to weather changes, water the plants before the cold wave arrives. By timely watering, the microclimate of the air environment near the ground can be adjusted, and the soil insulation capacity can be improved, which has a very good effect on preventing early spring freezing injury.
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