How to fertilize winter wheat? A full analysis of the latest fertilization techniques

Wheat is an important grain crop in our country, and winter wheat accounts for more than 80% of the wheat sown area. It is now the planting period for winter wheat. The fertilization technique for winter wheat is extremely important for its yield, so how should winter wheat be fertilized? Let's take a look together.

1. Apply basal fertilizer well

At the seedling stage, there should be an appropriate amount of nitrogen and phosphorus-potassium fertilizer so that wheat seedlings emerge early, and before overwintering there should be a certain number of tillers, laying a solid foundation for forming ears, increasing grains, and increasing grain weight after spring. The application rate of basal fertilizer generally accounts for 60%-70% of the total annual fertilization amount. Generally, about 1000-1500 kg of decomposed farmyard manure is applied per mu, together with an appropriate amount of 10 kg of urea or 25 kg of ammonium bicarbonate, 25 kg of superphosphate, and 5-7.5 kg of potassium chloride. Mixing phosphate fertilizer with organic fertilizer can significantly improve fertilizer efficiency. If it is saline-alkali land, it is best not to use potassium chloride; potassium sulfate or potassium nitrate can be used. If it is a compound fertilizer, it should be determined according to the nitrogen, phosphorus, and potassium content, on plots with higher fertility. Nitrogen fertilizer is not suitable for basal application and can be applied as topdressing.

2. Apply topdressing skillfully

After winter wheat in the north turns green, topdressing should be applied as appropriate according to the seedling stage. For wheat seedling fields with vigorous growth, apply 15 kg of superphosphate and 10 kg of potassium fertilizer per mu, but nitrogen fertilizer should not be applied as topdressing, so as to avoid excessive growth of seedlings and cause lodging and yield reduction later. For wheat seedling fields with weaker growth, topdressing should be applied early, with 15-20 kg of ammonium bicarbonate or 5-7 kg of urea per mu, preferably applied deeply in furrows, and not broadcast, so as to avoid fertilizer volatilization. For plots with weaker growth, a nitrogen fertilizer should be applied once at the jointing stage of wheat, about 3-4 kg per mu, applied in furrows or holes. For wheat fields with vigorous growth, fertilizer and water should be controlled at the jointing stage to avoid lodging.

3. Foliar spraying of fertilizer

At the later stage of wheat growth, foliar spraying of fertilizer should be carried out, because at this time the wheat root system has weak absorption capacity, and the nutrients absorbed cannot meet the needs of wheat maturation, making premature senescence very likely to occur. In the north, at the later stage of wheat growth, dry hot winds are also very likely to occur, thereby causing yield reduction. At the heading and flowering stage of wheat, spray 1-2 times of 0.2% concentration monopotassium phosphate, generally 50 kg of fertilizer solution per mu, with an interval of 10 days to half a month between the two applications, which can enhance wheat grain filling and consolidation and reduce the damage from dry hot winds.

  The above is an introduction to how to fertilize winter wheat. I hope it can help you. If you want to learn more related knowledge, please stay tuned to us.