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二、水溶法从外表上不易识别的化肥,则可根据化肥在水中的溶解情况加以区别。取化肥样品1小勺,放在烧杯或白瓷碗内,加3倍～5倍清水,充分搅动后稍停,观察其溶解情况。全部溶解的化肥有:硫酸铵、氯化铵、硝酸钾、尿素、碳酸氢铵、硝酸钾、氯化钾、硫酸钾等;部分溶解、部分沉淀于
Second, the water-soluble law from the appearance of the chemical fertilizer is not easy to identify, you can dissolve in water according to fertilizer to be distinguished. Take a teaspoon of fertilizer samples, placed in a beaker or white porcelain bowl, add 3 times to 5 times the water, pause after a full agitation to observe the dissolution. All dissolved fertilizers are: ammonium sulfate, ammonium chloride, potassium nitrate, urea, ammonium bicarbonate, potassium nitrate, potassium chloride, potassium sulfate, etc .; some dissolved, partially precipitated in