is a kind of substance contained in organic fertilizer
, which is an embodiment of the fertility of organic fertilizer and has the function of mineralization and humus. The content of organic matter in general standard organic fertilizer won't under 30%.
For organic matter has reached the standard of the organic fertilizer, the content of organic matter is not the higher the better, but also to see the raw materials of organic fertilizer.
For example, some organic fertilizer is made from weathered coal, but has not been activated, and its organic content is very high, can reach 70%, 80%, or 100%, this kind of organic fertilizer application effect is very poor, on the contrary, organic fertilizer made of high-quality raw materials, such as bean cake, its organic matter content is not high but its application effect is very good.
The decomposed organic fertilizer is the waste rich in organic matters such as livestock and poultry excrement, silt, decaying branches and leaves, or household garbage, which is stable and harmless after being decayed and fermented, and can supply the nutrients needed for crop growth, improve soil activity and promote crop yield.
However, we should not apply organic fertilizers that are not ripe or incompletely decomposed. For example, there is no mature chicken manure, its fertility is not stable, not lasting, the heat will burn roots and in the process of compost, it will contain more salt, it is more easy to cause soil salinization phenomenon, but also contain bacteria easy to let crops produce pests and diseases.
Whether it's straw compost or chicken manure, take out 500g and put it in a sealed bag for three days. If the bag swells up and there is more air in it, it is not fully decomposed. If the bag doesn't swell up, it's basically done. Straw and excrement will produce gas in the process of compost.
But those who use municipal sludge to produce organic fertilizer, this method is not tested out. However, this method can be used to detect whether our seedling substrate is fully mature.
The compost time is longer, the better it will be. If it has been stacked for 3 years, it will be completely decomposed, but it also will be mineralized and the nutrients will be poor. Moreover, in the process of innocuous disposal, its organic matter is also being consumed. Too long time will lead to too much nutrient loss, the short time harmless degree is not enough.
So, as long as we stack when the temperature reaches 65 degrees, maintain the high temperature for 5-7 days, the compost process is finished.