Winter wheat scientific fertilization advice

Under the condition of 300-400 kg/mu of production level, the total amount of fertilization is: nitrogen fertilizer (N) 10-12 kg/mu, phosphate fertilizer (P2O5) 4-5 kg/mu, potash fertilizer (K2O) 5-6 kg/mu. (2) The area where the soil is effectively deficient in zinc should be applied with 1 kg/mu of zinc sulfate.

In the proportion of fertilization, phosphorus, potassium fertilizer and zinc fertilizer are all used as base fertilizer, 50% of nitrogen fertilizer is used as base fertilizer, and 50% is used as top dressing. The base fertilizer is ditched deep, or evenly spread on the surface before the cultivated land, and then ploughed underground, flattened, and planted. According to local conditions, the joint fertilizer is applied, and the wheat generally enters the jointing stage in late February to early March. The timing of top dressing is generally reduced in the wheat population, the leaf color is lighter, and the regular top dressing at the base of the stem is suitable. The amount of top dressing can generally be applied according to 40%-50% of the total nitrogen application rate of wheat, and 10-12 kg of urea is applied per mu. The method of topdressing can be done by spraying or spraying after spraying. Spray 1%-2% urea solution (plus 0.2-0.3% potassium dihydrogen phosphate solution) from the booting stage to the early filling stage, and spray 50-60 kg per acre. Foliar topdressing is best carried out after 4 pm on a sunny day, and sprayed again at intervals of 7-10 days. If there is rain within 24 hours after spraying, it should be sprayed once.

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