Winter wheat fertilization technology can increase production

Promote the two heads are mainly used for better grounds, large groups after the winter, there is a risk of lodging wheat.

After applying basic fertilizer, cultivating strong seedlings, promoting effective delivery, and reaching sufficient populations, control the fertilizer at the returning green stage (7 to 9 leaves of the main stem) to reduce ineffective tillering, inhibit internode elongation, and solve high yields. The contradiction of lodging, spikes and spikes.

Specific methods: It is recommended that organic fertilizer should be used as a base fertilizer at a rate of 2,500 to 3,000 kg/mu, 10 to 15 kg/mu urea, 40 to 50 kg/mu of calcium phosphate, and 10 kg/mu of potassium chloride, as appropriate. Determined; after jointing, according to urea 5 ~ 10 kg / acre, potassium chloride 5 kg / acre applied to attacking panicle fertilizer, may also be determined as appropriate.

The technology of nitrogen rearward shifting is a new method of nitrogen fertilizer management put forward in high yield research in recent years. It is mainly applicable to fields with high levels of soil fertility and good irrigation water conditions. It is not a problem to obtain the ideal panicle number in these fields, but the number of grains per spike is not problematic. The role of grain weight is relatively increased.

Specific methods: It is recommended that basal fertilizer should be applied in an amount of 2000 to 2500 kg/mu for organic fertilizer, 5 to 10 kg/mu for urea, 40 to 50 kg/mu for calcium phosphate, and 10 to 15 kg/mu for potassium chloride. As appropriate; early in the spring without top dressing; after the jointing of wheat, when the polarities are markedly different, fertilizer and water strike at the same time, and in combination with watering, generally 50 kg of ammonium bicarbonate or 10 to 15 kg of urea per mu, which may be determined as appropriate; Watering, it is recommended to apply 5 kg of urea per acre to reduce the degradation of small flowers, and promote the number of large spikes; spraying 1% to 2% of urea and 0.3% of potassium dihydrogen phosphate solution 30 to 40 kg per acre foliar .

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