What are the factors that affect the use effect of organic fertilizer?

The first category: The reason of enterprise production control involves quality control.

1. Nutrition. Due to the low content of nutrients in raw materials or fermentation production processes, some enterprises' fermented organic fertilizers are not up to standard. In addition, some factories don't even have laboratories, so a batch of products enter the market. Some enterprises find that nutrients are not enough, but they are unwilling to add fertilizers to supplement them, which also makes these products flow into the market. The products produced by enterprises without fertilizer registration certificate are not circulated in the market, and generally face users directly, which is particularly difficult to supervise.

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3. Chloride ion content.

4. Salt content. Fertilizer with high salt content is like sprinkling a bag of salt on a limited field, and crops are greatly affected.

5. Cation exchange capacity. However, the immature organic fertilizer or even the manure sold after drying has extremely low cation exchange capacity and cannot play its due buffering role. On the contrary, it will endanger the buffering effect of the soil itself and cause crop growth obstacles.

6. Humic acid. There is almost no humic acid in fresh raw materials. Humic acid is continuously produced in the process of organic fertilizer fermentation, especially in the process of high temperature fermentation (above 50℃).

7. Small molecular fatty acids. Ciavatta and others believe that lower fatty acids have adverse effects on seed germination and plant growth. The harm it brings is that small molecular fatty acids will inhibit seed germination and root growth.

8. Heavy metals. Heavy metals will accumulate in plants and eventually concentrate on people through the food chain, causing harm to people. At the same time, heavy metals can also cause damage to the growth of crops.

9. Harmful microorganisms. Composting temperature is above 50℃ for not less than 5 days, which can kill pathogenic bacteria and eggs and achieve harmlessness. If the temperature does not reach above 50℃ or the time is too short, most ascaris eggs and coliforms cannot be killed, which will affect the healthy growth of crops.

The second category: the poor use effect of organic fertilizer is related to the misleading propaganda of fertilizer salesmen and the users' own knowledge and habits.

The second category: the use method is wrong.

1. Topdressing. Users used organic fertilizer as topdressing fertilizer and failed to cover the soil in time. Fertilizer is only on the surface of soil, so it can't fully contact with soil and can't improve soil. In addition, beneficial microorganisms can not play a role, and nutrients will also be lost with water. The functions of organic fertilizer, such as buffering capacity, loosening soil, water retention and ventilation, heat preservation and fertilizer conservation, cannot be reflected.

2. Organic fertilizer is in direct contact with crops. The consequence of this is that seeds will rot and die after emergence, and crops will wither or even die.

3. Directly burn the roots with fresh feces.