The nitric acid and nitrates formed after the application of ammonium nitrate are not easily adsorbed by the soil colloid, and are easy to flow with water, especially in paddy fields, and nitrogen loss is greater than that in dry land. In addition, in an anaerobic environment such as paddy soil, nitrate easily infiltrates into the water field reducing layer, which can generate ammonia gas or nitrogen monoxide under the action of denitrifying bacteria, resulting in denitrification loss. If it is applied, it should also be applied during the period of rice abundance and the formation of young spikes with high utilization rate of nitrate nitrogen. The application should pay attention to water management, fertilization about 3 cm in shallow water, and natural after application. Drain and refill afterwards.
Author: a water
Source: China Cooperation Times
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