Is it okay to apply only nitrogen fertilizer as base fertilizer in autumn and winter?
Is it okay to apply only nitrogen fertilizer as base fertilizer in autumn and winter? Please give an introduction. Some farmers are in the habit of applying 80-100 kg of ammonium bicarbonate or 60-80 kg of urea per mu when sowing autumn and winter crops. This method of applying only nitrogen fertilizer often causes some adverse consequences. First, it reduces the utilization rate of chemical fertilizer. Applying too much ammonium bicarbonate and urea...
Is it okay to apply only nitrogen fertilizer as base fertilizer in autumn and winter? Please give an introduction
Some farmers are in the habit of applying 80-100 kg of ammonium bicarbonate or 60-80 kg of urea per mu when sowing autumn and winter crops. This method of applying only nitrogen fertilizer often causes some adverse consequences.
First, it reduces the utilization rate of chemical fertilizer. When too much ammonium bicarbonate and urea is applied, the soil can hardly adsorb and retain it, and the crops cannot absorb it all at once either. When rain comes, it dissolves and leaches down, causing fertilizer loss and waste.
Second, it reduces the cold resistance of autumn and winter crops. Applying too much of these nitrogen fertilizers accelerates leaf emergence and rapid growth, causing an imbalance in the carbon-to-nitrogen ratio within the crop, reducing the content of carbon compounds in the crop, and causing wheat seedlings and other autumn and winter crops to grow excessively and have poor cold resistance. When too much nitrogen fertilizer is applied in the soil plow layer, the roots of autumn and winter crops will absorb and use it nearby, and the roots will no longer grow downward and deep, forming "laziness" in the root system, resulting in short and shallow roots and reducing the crop's drought resistance and lodging resistance. When too much nitrogen fertilizer is applied, it is easy to spread it unevenly, which at best affects germination and emergence, and at worst causes seed burning and root burning, leading to missing seedlings and broken rows.
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