What harm does immature organic fertilizer do to crops?

Organic fertilizer has a fermentation habit. When it is applied to soil, it will ferment, producing heat and harmful gases, causing seeds to rot, burning roots and seedlings, and the fermentation time will be long, which will affect the growth of crops. If there is no fermented and decomposed farm organic fertilizer, there will be many pests and diseases when it is applied to the soil. Animal manure, crop straw and leftovers all contain germs, eggs and viruses. If directly applied to the soil, it will spread, multiply and spread in the soil.

1, the national standard of organic fertilizer decomposition can refer to the national standard of organic fertilizer NY525-20 12:

The latest current implementation standard of organic fertilizer is NY525-20 12, which replaces the original NY525-20 1 1. 20 12 was released in March, and implemented in March, 20 12-6- 1 year, and implemented by China people.

2, self-made organic fertilizer decomposition (aerobic fermentation) can refer to:

In the aerobic state of accumulation, stirring and ventilation, the organic matter in raw materials is decomposed by microorganisms, and the heat generated by decomposition can evaporate water and kill pathogenic bacteria, parasite eggs and weed seeds, which is a safe, hygienic and organic matter stabilization process.

Through the above methods, the decomposed organic fertilizer should be odorless and fly-free, and its color should be black or brown.