A Detailed Explanation of the Role of Organic Fertilizer and Common Application Methods
In the total nutrient amount currently applied as fertilizer to farmland in our country, about more than 1/4 of the nitrogen, more than 1/3 of the phosphorus, more than 80% of the potassium, and more than 90% of the trace elements are supplied through the application of organic fertilizer. Applying organic fertilizer is an important foundation for the sustainable development of modern agriculture. A large amount of research and practice holds that organic fertilizer has comprehensive nutrients and long-lasting fertilizer efficiency....
In the total nutrient amount currently applied as fertilizer to farmland in our country, about more than 1/4 of the nitrogen, more than 1/3 of the phosphorus, more than 80% of the potassium, and more than 90% of the trace elements are supplied through the application of organic fertilizer. Applying organic fertilizer is an important foundation for the sustainable development of modern agriculture. A large amount of research and practice holds that organic fertilizer has comprehensive nutrients and long-lasting fertilizer efficiency. Organic fertilizer not only contains the major elements and trace elements essential to plants, but also contains abundant organic nutrients. Organic fertilizer is the most comprehensive fertilizer. Organic fertilizer can improve the physical and chemical properties of soil, raise soil fertility, and promote the activity of soil microorganisms. Organic fertilizer can be obtained locally and applied locally, with wide sources and low cost. By increasing the application of organic fertilizer, one can not only increase nutrients, improve soil fertility, and raise the utilization rate of chemical fertilizers, but correspondingly also reduce the amount of chemical fertilizers used, thereby lowering fertilization costs. It is one of the important measures for saving costs and increasing efficiency in agriculture.
In the application of organic fertilizer, the guiding ideology should emphasize placing equal importance on chemical fertilizer, applying the two in combination, so that they complement each other and achieve a reasonable structure and a balance between supply and demand; in application methods, it is mainly used as base fertilizer, applied throughout the plow layer in combination with tillage, and well-decomposed high-quality farm manure and plant ash can also be used as topdressing, while vigorously promoting the direct return of crop straw to the field; in terms of fertilizer sources, fully tap and utilize human excreta and urine, livestock and poultry manure and urine, crop straw, weeds, fallen leaves, and all waste from agricultural production, make full use of plant ash, soil and miscellaneous fertilizers, and cake fertilizer, and expand the planting area of green manure according to local conditions.