【摘要】 为了探讨碳酸氢铵分解性能和施用方法,采用盐酸吸收氨的方法考察了温度和含水量对碳酸氢铵分解率和分解速率的影响。实验表明30℃以上分解速率和分解率明显提高,低含水量和干燥的环境能明显降低分解速率和分解率。采用大数据分析了我国气温变化和土壤温度垂直分布状况。根据试验与分析结果,结合玉米和小麦根系分布规律,得出结论:对于小麦和玉米,碳酸氢铵宜施肥于土壤温度低于30℃的20～40cm土壤层。更多还原

【Abstract】 In order to explore the decomposition performance and application method of ammonium bicarbonate, the effect of temperature and water content on the ammonium bicarbonate decomposition speed and rate is investigated by the method of hydrochloric acid absorbing ammonia, and the decomposition speed and rate above 30℃ are significantly improved. The low water content and a dry environment will greatly reduce the decom-position speed and rate. The temperature change and the vertical distribution of soil temperature in China are analyzed by using the big data. Accord-ing to the results of the experiment and analysis and combined with the distribution law of corn and wheat root system, it is concluded that for wheat and corn, the ammonium bicarbonate should be fertilized in the 20～40 cm soil layer with a soil temperature below 30 ℃.更多还原