土壤中活性硅铝,一般是指无定形硅与铝,它们通常存在于酸性土壤和水稻土中.关于土壤中无定形硅铝的测定,虽然现有的方法较多,但迄今尚无简便的通用方法.目前认为较为理想的是Haspimote与Jackson(1960)的方法.其测定结果基本上可以代表无定形硅与铝,方法要点是用0.5N NaOH液浸土(或粘粒),直接加热煮沸2.5分钟,整个加热过程控制在5分钟以内.这是一种以 Activated silica and soil in the soil, generally refers to amorphous silicon and aluminum, which are usually found in acidic soils and paddy soils.Although the determination of amorphous silica and aluminum in soil, although there are many existing methods, but so far no simple The general method is currently considered to be the method of Haspimote and Jackson (1960) .The results of the determination can basically represent amorphous silicon and aluminum, the main point of the method is to use 0.5N NaOH liquid immersion soil (or clay), the direct heating boil 2.5 minutes, the whole heating process is controlled within 5 minutes