After the straw is returned to the field, pay attention to
First of all, we must pay attention to increasing the availability of nitrogen fertilizer for grass crops contain high cellulose content of straw, soil carbon content in the field will increase sharply. The growth of microorganisms is based on carbon as an energy source and nitrogen as a nutrient. Microorganisms must absorb nitrogen from the soil to make up for it. In general, 30 kg of urea or 50 kg of ammonium bicarbonate should be added per mu after returning wheat straw to meet the straw decomposition requirements.
Second, we must pay attention to overturning coverage In general, after the crop is harvested, the straw should be ploughed into the soil immediately to prevent the straw from being dried and affecting the rate of decay.
Finally, we must pay attention to the prevention and treatment of pests and diseases under the general conditions, the return of pests and diseases after the straw has aggravated. Pathogens and eggs in the straw will also enter the soil, increasing the chance of the next crop being damaged. Therefore, before the straw is applied to the soil, chlorothalonil 500 times can be mixed with phoxim 1000 times to spray the straw once again to reduce the damage of pathogenic bacteria and eggs.
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