将化肥取样品加热或燃烧,从火焰颜色、熔融情况、烟味、残留物等情况,可进一步识别肥料真假。氮肥碳酸氢铵,直接分解,发生大量白烟,有强烈的氨味,无残留物;氯化铵,直接分解或升华发生大量白烟,有强烈的氨味和酸味,无残留物;尿素,能迅速熔化,冒白烟,投入炭火中能燃烧,或取一玻 Fertilizer sample heating or burning, from the flame color, melting conditions, smoke, residues, etc., can further identify the true and false fertilizer. Nitrogen ammonium bicarbonate, direct decomposition, the occurrence of a large number of white smoke, a strong ammonia odor, no residue; ammonium chloride, direct decomposition or sublimation of a large number of white smoke, a strong ammonia odor and sour, no residue; urea, Can quickly melt, take white smoke, put charcoal can burn, or take a glass