Organic fertilizer usually refers to plants and animals (feces or corpses) used in the soil to change the soil structure through microbial activity, thereby allowing plants to grow. Before applying organic fertilizer, it is important to emphasize decomposition, because most of the nutrients contained in undecomposed organic fertilizers are in a slow-acting state and cannot be directly absorbed and utilized by crops. When undecomposed organic fertilizers are applied to the soil, not only is the fertilizer efficiency poor, but it will also breed weeds and spread pathogens and insect eggs. Therefore, the purpose of decomposing organic fertilizers is to release nutrients and improve fertilizer efficiency, while avoiding certain adverse effects on crops when the fertilizers are decomposed in the soil, especially the high temperature generated, which is easy to "burn the seedlings".
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