The nutrients contained in organic fertilizers are not omnipotent. Organic fertilizers contain many nutrients, which are superior to single fertilizers, but they contain nutrients that are not balanced and cannot meet the needs of high yield and quality of crops.

The decomposition of organic fertilizer is slower and the fertilizer effect is later. Although organic fertilizers contain all nutrient elements, they are low in content and decompose slowly in the soil. It is difficult to meet the nutrient requirements of crops when the amount of organic fertilizer is not large.

Organic fertilizers need to be fermented. Many organic fertilizers contain germs, eggs and weed seeds. Some organic fertilizers have organic compounds that are not conducive to crop growth. Therefore, they should be fermented and processed before they can be applied.

The use of organic fertilizer is contraindicated. The decomposed organic fertilizer should not be mixed with alkaline fertilizer and nitrate nitrogen fertilizer.

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