What is the role of organic fertilizer in formula fertilization technology

A: From the perspective of the material cycle of agricultural production, the higher the yield of crops, the more nutrients are obtained from the soil, and the nutrients in the soil need to be compensated in the form of fertilization, especially chemical fertilizers. With the increasing amount of chemical fertilizer, the proportion of organic fertilizer in the fertilizer structure is relatively decreasing, and the dependence on chemical fertilizer is increasing for agricultural production.

Under certain conditions, the application of chemical fertilizer does have a great effect on increasing the yield in the current season, but with the gradual increase of the amount of single chemical fertilizer, the consumption of soil organic matter also increases, resulting in the decomposition of soil aggregate structure, the ability to coordinate water, fertilizer, gas and heat decreases, and the performance of soil fertilizer conservation and fertilizer supply becomes poor, and new low-yield fields will appear. Formula fertilization should achieve the two purposes of soil fertilization capacity and soil fertilization at the same time, and it is impossible to rely on chemical fertilizers alone, and organic fertilizers must be added. The role of organic fertilizer, in addition to supplying a variety of nutrients to crops, is more important to renew and accumulate soil organic matter, promote soil microbial activities, help to form soil aggregate structure, coordinate soil water, fertilizer, gas, heat and other fertility factors, enhance soil fertilizer conservation and fertilizer supply capacity, and create conditions for high yield and high quality of crops.

Therefore, formula fertilization is not a simple ratio of several chemical fertilizers, it should be based on organic fertilizer, nitrogen, phosphorus, potassium fertilizer and medium and trace elements, which not only obtains high quality and high yield of crops, but also maintains and improves soil fertility.

In fact, the most important role is also irreplaceable, which is the supplement of organic matter. There are also other nitrogen, phosphorus and potassium available nutrient chemistry, which is irreplaceable for the improvement of soil aggregate structure by organic matter.

The application of chemical fertilizer and organic fertilizer should not be mixed together, organic fertilizer should be sprinkled first and then chemical fertilizer or fertilizer should be sprinkled first and then organic fertilizer, the two must be in order, and a reasonable proportion is also needed. For farmers, the most important thing to grow crops is chemical fertilizer. It can be said that the application of chemical fertilizers determines the yield of crops and directly affects the annual harvest of farmers.

However, there is still a huge difference between ordinary chemical fertilizer and organic fertilizer, not only the effect after use is obviously different, but also brings different economic benefits to farmers. Therefore, in order to give full play to the respective advantages of chemical fertilizer and organic fertilizer, the application of the two fertilizers should also be distributed scientifically and reasonably.

The different definitions of chemical fertilizers and organic fertilizers have significant functional differences. Naturally, they should also be different during use. First of all, it should be clear in the application process that it is not possible to use only organic fertilizer when fertilizing crops, and it is unrealistic and impossible to replace chemical fertilizer with organic fertilizer.

Secondly, organic fertilizers are not pollution-free。The excessive use of organic fertilizers causes no less pollution than chemical fertilizers. Organic fertilizer contamination includes excessive nitrogen and phosphorus nutrients, antibiotics, heavy metals and pathogenic bacteria.

Therefore, even organic fertilizers cannot be blindly overapplied.

Finally, neither organic nor chemical fertilizers are suitable for excessive monolithic use, as the land cannot rely solely on the return of organic matter produced per unit area to maintain and improve soil quality。If these organic substances are eventually made into organic fertilizer, it is impossible to maintain such a high yield of the land, and it will also lead to an imbalance in the fertility of the land, so organic fertilizer should be applied together with chemical fertilizers.

However, in the actual course of operation,The application of chemical fertilizer and organic fertilizer should not be mixed together, but should be sprinkled with organic fertilizer first and then chemical fertilizer or first with chemical fertilizer and then sprinkled with organic fertilizer, the two should have a certain order, and also need a reasonable proportionIn this way, you can really play the advantages of both and help improve soil fertility.

I think the two should be used in conjunction with each other to ensure that the nutrition is more adequate.

In general, it is necessary to fertilize the nutrients that the plant needs now, rather than indiscriminately.

I think this should be fertilized according to the growth of the crop and the nutrients required by the crop.

Generally, when it is just beginning to grow, it is better to use ordinary chemical fertilizers.

Chemical fertilizers mainly supplement the lack of nitrogen, phosphorus, potassium and other elements in the soil, while organic fertilizers mainly supplement the humus in the soil. However, organic fertilizers also contain a lot of nitrogen.

Therefore, when planting, it is recommended to apply organic fertilizer to the bottom fertilizer to improve the content of soil organic matter, and chemical fertilizers can be applied appropriately during the rapid growth period and flowering period of crops to improve growth efficiency, meet the elements needed for crop growth, and ensure yield.

Improve soil, improve the utilization rate of chemical fertilizers and improve the quality of agricultural products.

When you say nitrogen fertilizer, you mean chemical fertilizer. The general effect of nitrogen fertilizer is relatively fast, and the effect of fertilizer is short. 40-50 days.

Organic fertilizer comes slowly, and the fertilizer effect period is long, almost 9 months. The combination can adjust the needs of crops at different growth stages and also improve the utilization rate of chemical fertilizers. Chemical fertilizers have a certain amount of damage to the soil, and organic fertilizers can improve the soil environment.

Soil is a very important part of agricultural products to be delicious, and organic fertilizer can improve the soil and provide many nutrients, thereby improving the quality of agricultural products. In the long run, it is necessary to use more organic fertilizers.

However, in actual production, compound fertilizer and organic fertilizer are generally applied together as base fertilizer. It is rare to use nitrogen and organic fertilizers together.

The answer is yes, as can be seen from the characteristics between them.

Types and characteristics of organic fertilizer products.

According to the different product processing technology, compost products can be divided into ordinary organic fertilizer, biological organic fertilizer and organic-inorganic compound fertilizer. Ordinary organic fertilizer is a commercial organic fertilizer produced by using all kinds of organic waste as raw materials and fully decomposed after high temperature fermentation, which is in powder or granular form. The commercial organic fertilizer has complete nutrients, which can improve the soil, improve the physical and chemical properties of the soil, and enhance the ability of the soil to retain water, fertilizer and fertilizer.

The difference between organic fertilizer (the following will be compared with bio-organic fertilizer crops) and compound fertilizer.

Organic fertilizer. Complete nutrients.

Improve the soil. Improve product quality.

Improve the rhizosphere microbiota of crops and improve the resistance of plants to diseases and insects.

It can promote the utilization of chemical fertilizers and improve the utilization rate of chemical fertilizers.

Compound fertilizers (fertilizers).

2 or more types of nutrients.

Frequent use can cause soil compaction.

The crop microbial community is single and prone to pests and diseases.

It is easy to cause nutrient fixation and loss.

Summary: Organic-inorganic compound fertilizer refers to a compound fertilizer with both organic and inorganic nutrition, which is a fertilizer produced by adding an appropriate proportion of inorganic nutrients on the basis of organic fertilizer.

Basal fertilizer (base fertilizer) application.

Basal fertilizer, generally called base fertilizer, is a fertilizer that is applied before sowing or transplanting. When ploughing, the organic manure is evenly applied, and the fertilizer is turned into the soil with the ploughing, this method is simple, easy to operate, can play a good purpose of improving the soil, but in its uniform application to the soil, can not all or even most of the contact with the root system and be utilized by the root system, therefore, the fertilizer utilization rate is bound to cause excess waste, bring certain economic losses, and secondly, it is easy to produce soil obstacles. Therefore, this method is more suitable for planting crops with higher densities.

Top dressing application. There are two methods of topdressing for organic fertilizer: deep soil application and extra-root topdressing. Deep soil application generally applies organic fertilizer near the dense layer of the root system, and covers the soil after application to avoid the loss of nutrient volatilization. Extra-root topdressing is to mix the compost with 10 times the water evenly, take its supernatant after standing, and spray the fertilizer solution on the foliar surface of the crop with the help of a sprayer for foliar absorption.

It is used as seed fertilizer. There are many ways to use seed fertilizer, such as seed dressing, soaking, strip application, hole application, etc. Seed dressing is a method of dissolving or diluting fertilizer with a small amount of water, spraying on the surface of seeds, and mixing while spraying, so that the fertilizer solution is evenly stained on the surface of the seeds, and sown after drying. Soaking is to dissolve or dilute the fertilizer solution into a solution of a certain concentration, according to the liquid type 1:

10 ratio, put the seeds into the solution and soak for 12 24h, so that the fertilizer liquid infiltrates into the seed coat with water, and then sow after drying. After ditching or digging holes, fertilizer is applied into the ditch and hole of 3 5cm of the cultivated layer, and then sown near the fertilizer belt, and the distance between the fertilizer is kept above 3cm. Used as seed fertilizer, fertilizer requires the release of nutrients to be fast, can not be too acidic, too alkaline, the fertilizer itself has no toxic effect on seed germination, and the organic fertilizer that is fully decomposed after composting is a good seed fertilizer.

Used as seedling fertilizer.

Fully decomposed organic fertilizer, evenly released, comprehensive nutrients, is an ideal fertilizer for seedlings. Generally, 10% fermented organic fertilizer with sufficient fermentation is added to a certain amount of peat, fly stone or perlite, and the soil is mixed evenly to make seedling substrate.

Full-layer fertilization and concentrated fertilization of organic fertilizer.

Full-layer application is to sprinkle organic fertilizer all over the surface, and apply organic fertilizer into the whole soil layer through cultivated land, this fertilization method can be applied in the case of more organic fertilizer (4000 6000kg per mu) or crop density. Concentrated application into the soil is to apply compost near the root system of crops by ditching, and this fertilization method is worth using when there is less fertilizer (1500 3000 kg per mu) and soil fertility is relatively low.