Can wheat be topdressing when it turns green?

Yes, according to the growth and development law of wheat, topdressing is the most suitable, usually before spring.

The longest time for winter wheat to turn green manure is only 44 days. This time is a good time to fertilize. Therefore, topdressing wheat before or within 1 1 day in the first month after the year is the appropriate time and the best time to topdress green manure.

Remind everyone that it is suggested that wheat green manure should not be topdressing after beginning of spring to avoid delaying wheat harvest.

Turning wheat into green manure belongs to the vegetative growth stage of wheat and needs sufficient nitrogen fertilizer. Fertilization is generally based on chemical fertilizers, such as urea, ammonium bicarbonate, ammonium chloride, ammonium sulfate, ammonium nitrate and other nitrogen fertilizers.

The reason why wheat green fertilizer can't be topdressing after beginning of spring;

At present, urea is a high-nitrogen and quick-acting chemical fertilizer, which is widely used as topdressing because it is a green fertilizer for winter wheat. Before and after beginning of spring, the temperature in the north of Huaihe River in Qinling Mountains was below 5℃, and the temperature in the south was below 65438 00℃. It takes about 10-20 days for urea to be converted into nitrogen and absorbed by wheat.

After the spring of wheat, the temperature gradually rose, and the growth and development of turning green and jointing began earlier, but the nitrogen fertilizer urea applied in the soil was still not available. When wheat is in the jointing stage of returning to green after the rain, the absorption of nutrients in the later stage will promote the vigorous growth of wheat after the jointing stage, which will make it difficult to control the vigorous growth of wheat, cause lodging in the later stage, promote the slow aging and maturity of wheat, and postpone the harvest period of wheat.

It affects the plumpness of wheat seeds and the yield and quality of wheat. Therefore, topdressing wheat green manure before spring is the best fertilization period.