What specific effects does organic fertilizer have on soil fertility?
Organic fertilizer can increase soil organic matter and improve soil physical and chemical properties. Increasing the application of organic fertilizer and continuously increasing the content of soil organic matter is the main link in improving soil fertility. Organic matter can increase the aeration, water permeability, and water storage of the soil, and improve the root growth environment, so that the soil can retain water and fertilizer.
What elements does organic fertilizer provide that chemical fertilizers cannot provide?
Organic fertilizer provides a large amount of organic nutrients and active substances for the soil, such as amino acids, humic acid, sugars, and nucleic acid degradation products, which can be directly absorbed by crops and stimulate root growth. Among them, organic fertilizer contains a large number of microorganisms, which can accelerate the decomposition and circulation of organic nutrients in the soil.
Large-scale application of chemical fertilizers or improper nutrient ratios will lead to a decline in the quality of agricultural products. The combined application of organic fertilizers and chemical fertilizers can increase the protein and amino acid content of crops, while also reducing the nitrate content in vegetables and increasing the vitamin C content. The increase in the amino acid content in plants helps to enhance the plant's resistance to stress and pests and diseases.
What role does organic fertilizer play in improving the environment?
The application of organic fertilizers can reduce the use of chemical fertilizers, thereby reducing the adverse effects of chemical fertilizers on the environment. The production process of organic fertilizers is also a process of resource treatment of urban and rural organic wastes and turning waste into treasure. In addition, the application of organic fertilizers can increase the organic matter content, enhance the soil's adsorption of heavy metals and pesticides, and reduce their harm.
What do farmers mainly look for when buying organic fertilizers?
First, look at the raw materials. You need to understand whether the raw materials used in the product are of high quality. At present, the better organic raw materials used by organic fertilizer manufacturers are soybean meal, sesame meal, sugar residue, cassava residue, bacterial protein, amino acids, humic acid, tobacco powder, etc. Some also add calcium raw materials such as bone meal and shell powder. Increasing the calcium content has a significant improvement effect on bitter pit disease and water core disease of fruit trees.
Second, see whether the ratio of microbial strains is scientific. The enzyme system of excellent strains is comprehensive and the enzyme activity is high. The enzyme activity of cellulase, xylanase, polygalacturonase, polygalactose lyase, etc. secreted by them can meet the requirements of industrial strains and have strong tolerance. By adding excellent microbial agents, the composting cycle can be greatly shortened and the composting effect can be improved.
Third, see whether the manufacturer's production line process is strict. The entire production process of commercial organic fertilizer can be summarized as ingredients-composting-granulation-cooling-screening-packaging, among which the degree of maturity is extremely important. Good products have high degree of maturity and lasting fertilizer effect; products with insufficient degree of maturity can easily cause crop seedlings to burn.