Rice: Rice's absorption of nitrogen fertilizers began to increase gradually after turning green, and reached the highest peak of fertilizer absorption at the peak of tillering. In order to promote the early emergence of rice, early delivery, should be applied early and re-appropriate manure. Generally, 7 to 10 days after transplanting, the application of ammonium sulfate is 225 kg per hectare, and 100 kg of urea is applied as heading.
Takahata: In order to meet the requirements of sorghum from jointing to heading, the first fertilizer should be applied at the jointing stage, 150-225 kg of ammonium nitrate or 120-180 kg of urea should be applied per hectare; For secondary fertilizer, 120 kg of ammonium nitrate or 75 kg of urea is applied per hectare.
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