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Speaking of the definition and classification of organic fertilizers, the first thing to note is that organic fertilizers here refer to organic fertilizers that meet national and international standards and are fully decomposed and harmless. This type of organic fertilizer is processed by professionals Organic fertilizer production equipment. This type of organic fertilizer has the advantages of rich nutrients and high organic matter content. At the same time, it can loosen the soil, improve fertility, improve soil structure, and increase crop yield and quality. effect.
How to distinguish the quality of organic fertilizer?
At present, there are many kinds of commercial organic fertilizers on the market, and product prices and quality are uneven. Some farmers have some misunderstandings about the use of organic fertilizers. Today let’s talk about how to buy organic fertilizer?
1. Look at the packaging: see if the formal logo is available, including the company name, factory address, telephone number, fertilizer registration certificate, expiration date, production date, certificate of conformity, etc. See if it is authorized production (generally, authorized production does not have its own factory and no source of raw materials).
2. Look at the color: good organic fertilizers decompose after a long period of high-temperature fermentation, and the color should be dark brown to black; inferior ones are usually lighter in color.
3. Smell the smell: carefully smell whether the fertilizer smells of ammonia, feces, or silt. Generally speaking, good organic fertilizers have a special sour smell due to their thorough decomposition.
4. Water-soluble method: Dissolve the organic fertilizer in water and observe that the inferior fertilizer is evenly distributed, with more impurities, and sinks at the bottom; the good-quality water-soluble fertilizer is evenly distributed and the color is sauce-colored.
5. Hand twist method: Take the organic fertilizer and use your thumb and index finger to roll it back and forth. If you feel like a hand, there are sand or other impurities in it, which is likely to be inferior fertilizer.
6. Do the test: Take a pot of flower, grab a large amount of organic fertilizer and sprinkle it directly on the rhizome of the flower, water it, good organic fertilizer will gradually grow white hyphae, promote plant growth, and unqualified organic fertilizer will After fumigation, the plants gradually wilt until they die.
7. It can also be used in the field, leaving a portion of the organic fertilizer not to be applied, and observing the performance of the plants. A good organic fertilizer will have obvious effects on growth, yield, and quality.
What are the precautions when using organic fertilizer?
1. Organic fertilizer has unbalanced nutrients, low nitrogen, phosphorus, and potassium content, and slow decomposition in the soil. Although there are many types of nutrients, they are not as good as chemical fertilizers with a single nutrient, and cannot meet the needs of high yield and good quality of crops. When applying organic fertilizers, chemical fertilizers should be applied in accordance with the nutrient requirements of the crops, and organic fertilizers and chemical fertilizers should be used in combination to learn from each other’s strengths and make use of their respective advantages to meet the needs of crops for various nutrients in quantity and time. Even the farmland that produces green food should be equipped with the appropriate amount of mineral fertilizer and sprayed with foliar fertilizer during the crop growth period to ensure the nutritional needs of the crop.
2. Organic fertilizers should not be mixed with alkaline fertilizers to avoid the volatilization of ammonia and reduce the nutrient content of organic fertilizers. Organic fertilizer contains more organic matter and should not be mixed with nitrate nitrogen fertilizer.
3. Don’t overuse organic fertilizer. Excessive use of organic fertilizer will cause the following situations to occur: burning seedlings, resulting in a large accumulation of nutrients such as phosphorus and potassium in the soil, resulting in an imbalance of soil nutrients; accumulation of nitrate ions in the soil, resulting in excessive crop nitrate salts, and high soil solution concentration. Conducive to root water absorption.