What are the hazards of unripe organic fertilizer in rice fields? How to prevent and control?

Organic fertilizer has a fermentation habit, applied to the soil will ferment, produce heat, harmful gases, rotting seeds, burning roots, burning seedlings phenomenon, and fermentation time is long, the production of fertilizer instead of affecting the growth of crops, there is no fermentation of well-decayed organic fertilizer, applied to the soil pests and diseases, animal manure, crop residues, scraps contain germs, eggs, viruses, if applied directly to the soil, will be in the soil, will spread, breeding, hatching, harming the growth of crops. Soil roaming, breeding, hatching, endangering the growth of crops, outbreaks of pest and disease epidemics.

1, the national standard of organic fertilizer decay can refer to the national standard of organic fertilizer NY525-2012:

Organic fertilizer the latest current implementation of the standard for the NY525-2012, instead of the original NY525-2011, released on March 1, 2012 2012 2012-6-1 implementation of the People's Republic of China **** and the Ministry of Agriculture issued.

2, homemade organic fertilizer putrefaction (aerobic fermentation) can be referred to:

In the pile, stirring, ventilated aerobic state, the use of microorganisms to decompose the organic matter in the raw materials, the decomposition of the heat generated by the evaporation of water, which can kill the pathogenic bacteria, parasitic eggs and weed seeds, is a safe, hygienic, organic matter stabilization process.

By the above method, the rotted organic fertilizer should be odorless and fly-free, and the color should be black or brown.