What are the types of inorganic fertilizers? What are the inorganic fertilizers

Inorganic fertilizers refer to fertilizers that do not contain organic matter. It mostly refers to fertilizers that are synthesized by chemical methods or simply processed. According to the nutrients it contains, it can be divided into the following types.

Nitrogenous fertilizer. Urea.

Ammonium bicarbonate, ammonium sulfate, ammonium chloride, ammonium nitrate, etc.

Phosphate fertilizer. Calcium phosphate, heavy superphosphate, calcium, magnesium phosphate fertilizer, phosphate rock powder, etc.

Potassium fertilizer. Potassium sulfate, potassium chloride.

Kiln ash, potash fertilizer, plant ash, etc.

Compound fertilizer. Monoammonium phosphate, diammonium phosphate, potassium dihydrogen phosphate, potassium nitrate, etc.

Medium and micro fertilizer. Calcium carbonate.

Calcium sulfate, magnesium sulfate, borax, copper sulfate, manganese sulfate, ferrous sulfate, ammonium molybdate, etc.

Inorganic fertilizersInorganic fertilizers are also called chemical fertilizers. This fertilizer is characterized by relatively simple nutrients, most of which are one type of fertilizer and contain only one or two types of fertilizer. It is easy to decompose when applied in water and has a quick effect, so it is also called "fast-acting fertilizer". Including nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, calcium fertilizer, etc.

1. Nitrogen fertilizer. Nitrogen fertilizers can be directly absorbed and utilized by phytoplankton. It is commonly used in aquaculture to promote the growth and reproduction of phytoplankton and increase the amount of forage for filter-feeding fish and non-crucian carp.

Nitrogen fertilizers commonly used in fish farming include ammonium bicarbonate, ammonium sulfate, ammonium nitrate, ammonium chloride and urea. These nitrogen fertilizers exist in the form of ammonium, which easily volatilizes into gases when exposed to alkali, reducing their fertilizer efficiency. Therefore, they cannot be mixed with alkaline fertilizers.

Nitrogen fertilizers are also fast-acting fertilizers. It should be used as a top dressing or base fertilizer. When used as base fertilizer, 2 kg can be applied per mu, and the amount of top dressing is 1 4 1 3 of the base fertilizer.

There are the following fertilizers that do not belong to organic fertilizers.

1. Ammonium bicarbonate. Ammonium bicarbonate, also known as ammonium bicarbonate, has a nitrogen content of 17% and is very easy to decompose under high temperature or humidity to produce ammonia volatilization. Ammonium bicarbonate has a weakly acidic reaction and is a fast-acting fertilizer.

2. Urea. The urea nitrogen content is 46%, which is the highest nitrogen content among solid nitrogen fertilizers. The fertilizer effect is slower than that of ammonium sulfate, but it has a longer fertilizer effect. Urea has a neutral reaction and is suitable for application in a variety of soils. It is usually used as an out-of-root top dressing, and the suitable concentration is:

3. Ammonium sulfate. The content of ammonium sulfate nitrogen is 20%-21%, and the fertilizer efficiency of each kilogram of ammonium sulfate is equivalent to that of 60kg-100kg of human feces and urine, which is very easily soluble in water, has a very fast fertilizer effect, and the validity period is relatively short, usually 10-20 days. Ammonium sulfate has a weakly acidic reaction and is mostly used as top dressing.

4. Calcium, magnesium and phosphate fertilizer. The phosphorus content of calcium, magnesium and phosphorus fertilizer is 14%-18%, with slightly alkaline, slower fertilizer effect and longer after-effect. If it is composted with crop straw, garbage, manure, etc., organic acids can be produced in the fermentation and decomposition process, so that the fertilizer efficiency is increased, and it is suitable for use as base fertilizer.

Calcium, magnesium and phosphate fertilizer is suitable for the soil is acidic or slightly acidic, which can supplement the insufficient calcium and magnesium trace elements in the soil.

5. Lime. Lime is alkaline, belongs to the acidic soil in southern China often used fertilizer, after application can not only increase the calcium fertilizer in the soil, improve the soil structure, but also neutralize the soil acidity. When making compost, you can mix a small amount of lime to speed up the decomposition.

Organic fertilizer is also known as farmhouse fertilizer. All organic substances (compounds containing carbon) are used as fertilizers are called organic fertilizers. Including human manure, manure, compost, green manure, cake fertilizer, biogas fertilizer, etc.

It has the characteristics of many types, wide range and long fertilizer efficiency. The nutrients contained in organic fertilizer are mostly in an organic state, and it is difficult for crops to be used directly, and a variety of nutrients are slowly released through the action of microorganisms, and nutrients are continuously supplied to crops. The application of organic fertilizer can improve soil structure, coordinate water, fertilizer, gas and heat in the soil, improve soil fertility and land productivity.

The characteristics of organic fertilizer include rich resources, many types, large quantities, wide range, organic fertilizer contains high organic matter content, complete nutrients, comprehensive nutrition, long and stable fertilizer effect, can fertilize the field and raise the land, and contribute to the protection of the ecological environment.

Uncompressed farmyard manure and plant ash are not organic fertilizers. Uncompressed farmyard manure is not organic fertilizer, and farmyard manure is not the same as organic manure. There are several indicators of organic fertilizer, one is from plants or animals, the second is carbon, the third is organic, the fourth is harmless treatment, and the fifth is that it can provide complete nutrition for plants, and cannot contain harmful microorganisms, grass seeds, and insect eggs.

Characteristics of inorganic fertilizers.

Generally, livestock and poultry manure can only be called circle manure. Compost that is not well rotted is prone to heat generation and can also be infected with soil-borne pests and diseases. Grass ash belongs to inorganic fertilizer and not organic fertilizer, and plant ash belongs to farmhouse fertilizer, but does not contain organic matter, so it cannot be called organic fertilizer.

It is the ash produced by burning plants or animals in plant ash. Plant straw, roots, leaves and other organic matter are burned at high temperatures, leaving only various metal residues and compounds, such as potassium carbonate. Grass ash can only be called inorganic farm fertilizer.

Unrotted farm manure and plant ash are not organic fertilizers.

Farm fertilizer is not the same as organic fertilizer, and organic fertilizer has several indicators: first, it is better than plants or animals; second, it contains carbon elements; third, it contains organic matter; fourth, it has been harmlessly treated; Fifth, it can provide full nutrients for plants, and cannot contain harmful microorganisms, grass seeds and insect eggs.

Introduction: Organic fertilizer refers to the fertilizer produced by the fermentation of animal manure or plant residues, organic fertilizer contains a large number of elements necessary for plant growth, which can improve the soil, create better soil conditions for plant growth, promote microbial activity, accelerate the degradation of organic matter, promote plant growth, and improve the quality of agricultural products.

Inorganic fertilizers include calcium, magnesium and phosphorus fertilizers, ammonium phosphate, plant ash, nitrogen fertilizers, potassium fertilizers, calcium fertilizers, potassium nitride, ammonium nitrate, superphosphate, trace element fertilizers, liquid ammonia, etc., and inorganic fertilizers refer to fertilizers composed of inorganic substances, which have the advantages of fast onset and easy absorption by plants, but long-term use of inorganic fertilizers will pollute the soil.

1. Nitrogen fertilizer

Inorganic fertilizer contains nitrogen fertilizer, which contains ammonia, ammonium bicarbonate, ammonium chloride, ammonium sulfate and other fertilizers, ammonia has a strong odor, corrosive to the soil, ammonium bisulfate can promote the photosynthesis of plants, so that the yield of vegetables is increased, and ammonium chloride can inhibit nitrification in rice fields, which will make rice form fibers.

2. Phosphate fertilizer

Inorganic fertilizers mainly include phosphate fertilizers, among which the more common ones are superphosphate, phosphate rock powder, calcium, magnesium phosphate fertilizer, etc., superphosphate is a phosphate fertilizer developed after the decomposition of phosphate rock using sulfuric acid, which is very soluble in water, and the color of phosphate rock powder has gray and brown, which is suitable for use as base fertilizer in acidic soil.

3. Compound fertilizer

Inorganic fertilizer contains compound fertilizer, which is common potassium dihydrogen phosphate, ammonium phosphate, ammonium nitrate, potassium nitrate, etc., potassium dihydrogen phosphate is often used as a high-efficiency nitrogen, phosphorus and potassium compound fertilizer, which can delay the aging degree of crops, and the shape of ammonium phosphate is granules or powder, suitable for use in soil with pH greater than .

4. Trace element fertilizer

Inorganic fertilizers include trace element fertilizers, the more common ones are copper fertilizer, boron fertilizer, molybdenum fertilizer, zinc fertilizer, manganese fertilizer, etc., trace element fertilizer plays an important role in the growth and development of plants, it can make crops absorb enough nutrients, and at the same time accelerate the growth rate of crops.

Organic fertilizer is not only an ideal base fertilizer, but also a top dressing, which is the growth period of crops. The main fertilizer species that provide nutrients. However, how to use organic fertilizer is a technical job, and many farmers do not know what to pay attention to when applying organic fertilizer.

1. The release of effective nutrients requires a process, and organic fertilizer should be applied a few days in advance.

2. Top dressing organic fertilizer crops need a lot of nitrogen, potassium and other nutrients during the growth period, and the nitrogen and potassium content in general organic fertilizer is not high to ensure the rapid growth of crops. For the demand for growth nutrients, organic fertilizers with high nitrogen and potassium content should be selected.

3.Formulate a reasonable distribution ratio of base fertilizer and top dressing. When the ground temperature is low, the microbial activity is weak.

Organic fertilizer releases nutrients slowly, so most of the application rate can be used as basal fertilizer; The ground temperature is high, the microbial decomposition ability is strong, if the amount of base fertilizer is too much, before planting, the fertilizer will be decomposed by microorganisms. Over-decomposition, after planting, the fertilizer takes effect immediately, which can sometimes lead to overgrowth of the crop. Therefore, high-temperature cultivation of crops can reduce the amount of basal fertilizer and increase the amount of top dressing.

4.Seedlings need the right amount of fertilizer. Crop seedlings require very few nutrients. However, if the nutrients are insufficient, strong seedlings cannot be formed, which is not conducive to transplanting or future crop growth. The decomposed organic fertilizer has uniform nutrient release and balanced nutrients, which is an ideal fertilizer for seedlings.

There are many types of organic fertilizer, which can generally be divided into organic fertilizer for agricultural waste (such as straw, soybean meal and cotton meal, etc.), organic fertilizer for livestock and poultry manure (such as chicken manure, cow manure, sheep manure, etc.), organic fertilizer for industrial waste (such as distiller's grains, vinegar grains, cassava residue, sugar residue, etc.), organic fertilizer for domestic waste (such as kitchen waste, etc.), and organic fertilizer for municipal sludge.