Organic fertilizers can be roughly classified into six categories in terms of raw materials:



1. Animal Organic Fertilizer



2. Cake organic fertilizer



3. Straw Organic Fertilizer



4. Organic manure of feces



5. Organic Fertilizer Made from Domestic Waste



6. Organic Fertilizer of Coal Gangue




At present, in the field of organic fertilizer production in our country, especially the real high-efficiency organic biomass bio-fertilizer is not much, but fake and inferior products with the brand of organic fertilizer or high-efficiency organic biomass bio-fertilizer are everywhere. Today, I'd like to introduce some methods to distinguish organic fertilizers.




1. Take a cup of water by soaking method, soak the organic fertilizer sample in water, then crush the organic fertilizer soaked in water by hand, stir it to see the raw material of organic fertilizer intuitively; then put it for a period of time, if organic fertilizer and water are stratified in a short time, it shows that organic fertilizer is more important than soil.




2. Smell the taste of fertilizer carefully to see if there is ammonia, feces, silt, good organic fertilizer should be a thorough rotten taste.




3. Hand twist method to take organic fertilizer with thumb and forefinger back and forth crushing, if there is a sense of hand, there are sand or other impurities.




4. Bacteria test method take a cup and put organic fertilizer in it, sprinkle a little water (pay attention not to soak water, wet line), put it in a warm and suitable place, good organic fertilizer will grow white hyphae, break apart organic fertilizer particles will see white hyphae inside.




5. Pot test method takes a pot of flowers, grab a large amount of organic fertilizer and sprinkle it directly on the root and stem of the flowers, water it, good organic fertilizer will gradually grow white mycelia, promote plant growth, unqualified organic fertilizer will fumigate seedlings, plant will gradually decline until death.




6. In contrast experiment, after selecting organic fertilizer, when planting crops, a part of the organic fertilizer is set aside, and the performance of plants is observed. Good organic fertilizer will have obvious effects on growth, yield and quality.





7. See whether the packaging is specifications, whether it is authorized production (generally authorized production is not their own factory, no source of raw materials)?




8. Packing in foreign languages should not be purchased as far as possible, because organic fertilizers are all wastes for reuse, and it is almost impossible to import them from abroad.