The key ingredient in manure organic fertilizer is soil organic matter, and manure organic fertilizer enhances the soil organic matter composition in the soil layer. Soil organic matter can improve soil layer physics, organic chemistry and microbial characteristics, and organic fertilizer equipment matures soil layer and fertilizes cultivated land. The finished organic fertilizer made by the organic fertilizer production equipment has a slow decomposition rate and a longer fertilizer effect. The chemical fertilizer is effective, and it should be applied about a week in advance when it is used as a base fertilizer. When the top-dressing fertilizer is applied, it should be applied before the critical period of crop nutrition or the peak period of nutrient absorption to meet its needs. The fertilization method of "mainly organic fertilizer, supplemented by chemical fertilizer" is a reasonable fertilization method at present.
Advantages of combining organic fertilizers with chemical fertilizers:
1. The chemical fertilizer has high nutrient content and fast fertilizer efficiency, but the duration is short and the nutrients are single. On the contrary, organic fertilizer production and chemical fertilizers can complement each other to meet the nutrient needs of crops in each growth period.
2. After the fertilizer is applied to the soil, some nutrients are absorbed or fixed by the soil, which reduces the availability of nutrients. The organic fertilizer produced by the fertilizer production machine can reduce the contact between the fertilizer and the soil, reduce the probability of the fertilizer being fixed by the soil, and improve the effectiveness of nutrients.
3. Generally, the solubility of chemical fertilizers is large, and high osmotic pressure is applied to the soil after application, which affects the absorption of nutrients and water of crops, and increases the chance of nutrient loss. If mixed with organic fertilizer, this disadvantage can be avoided and the absorption of nutrients and water can be promoted.
4. On alkaline soil, if only acidic fertilizer is applied, after the plants absorb ammonium, the residual acidic roots combine with the hydrogen ions in the soil to form acid, which will cause the soil acidity to increase and the soil to become hard. If mixed with organic fertilizer, it can enhance the buffer capacity of the soil, effectively adjust the pH value, and prevent the increase of soil acidity.
