有机物或者能引起分解的有机体腐殖质在改良土壤方面有着很大的作用。腐殖质可以改良和保持土壤的结构。它使松散的土质变成团粒状,使很紧密的板结土变得疏松。总之,它有利于耕作以及水分和空气在土壤中的流通。在化学方面,有机物在它的合成过程中,不仅能够产生大量的微生物,而且可以增长和调整土壤的互换能力,从而有利于吸收土壤中的肥料,也利于吸收无机肥料。 Organics or organic humus, which can cause decomposition, play a big role in soil improvement. Humus can improve and maintain the structure of the soil. It turns the loose soil into a pellet that loosens the very dense plank soil. In short, it benefits tillage and the circulation of moisture and air in the soil. In chemistry, organic matter in its synthesis process, not only can produce a large number of microorganisms, and can increase and adjust the soil exchange capacity, which is conducive to the absorption of soil fertilizers, but also conducive to the absorption of inorganic fertilizers.