When choosing fertilizers, what do you need to compare?

Fertilizers are often used in agricultural production, and there are three types of fertilizers that are more commonly used: inorganic organic and compound. Among them, nitrogen, phosphorus and potassium are inorganic.

The so-called compound has the same name as it is, it mixes three elements. Organic is simpler and is our common farm fertilizer. If you can use them reasonably, you will increase crop yield and quality, but it is also important to be mindful of the environment and agriculture when using it.

So how to use fertilizer science is a harder question. What should be chosen about the stems of plants? At this point, freshwater is a good option.

To promote differentiation and prematurely, phosphate fertilizers are chosen. Let their roots become better, and the fruit can be more full of hard fruit. As for how to promote better photosynthesis, you have to choose potash.

It allows the roots of the crop to be more developed and stronger as it grows. If you use them unreasonably, there will be some drawbacks and more serious ones. First of all, the various elements present in the fertilizer will also have a certain impact on the soil.

If used for a long time, it will change its acid.

There will also be a reduction in fertility, which will have a direct impact on crop yields. If the harmful metal content increases, it can also affect its growth, eventually leading to poor soil so that it is not suitable for replanting crops. Secondly, the use of nitrogen and phosphorus will enrich the water body, affect the water meter, for a long time, and the groundwater will also lead to pollution.

The third is about the waste of resources, because no matter what kind of fertilizer is a very complex process, there will be various mineral resources and power resources in the process. The fourth point is that the quality of the error is directly reduced, because the growth of trophic disorders will also be affected. If you use heavy usage, you'll be making some content beyond the standard hazards, with more serious consequences.

It will also cause microorganisms living in the soil, such as earthworms, to cause a large number of deaths. In the production process, due to the lack of understanding of the growth period, the examples of incorrect use are all there. Secondly, in recent years, China's phosphorus resources are relatively abundant, and potassium resources are relatively short, so they have also caused a certain degree to a certain extent.

Although the use of organic fertilizers has improved this phenomenon, it is not yet fully effective, causing certain waste and pollution.

You can take a look at the ingredient list and compare them according to the fertilizer you want to choose. Choose organic fertilizers whenever possible. This kind of fertilizer will be of better quality and will not have an impact on the environment.

1. Look at the status.

Fertilizers that have not been fully decomposed or harmless can not be used, otherwise it will cause soil pollution, 2, depending on the amount of water.

If the fertilizer feels very dry in your hand or the fertilizer cannot be dispersed after letting go, it indicates that it is a fake fertilizer.

Look at the water content High-quality fertilizers give people the feeling that they are neither dry nor wet. The higher the water solubility of the fertilizer, the better the quality, because the crop can only absorb and utilize the dissolved fertilizer nutrients, and the non-water-soluble fertilizer can not be absorbed and utilized by the crop.

Different soils choose different varieties of fertilizers. It is best to choose organic fertilizer or compound fertilizer. They generally do not have a great impact on the soil. If chemical fertilizers are used for a long time, it is easy to change the properties of the soil.

Take a look at its ingredient list. If it contains ingredients that are very harmful to the soil, you should not choose it.

1. Improve soil and fertilize soil fertility. After organic fertilizer is applied to the soil, organic matter can effectively improve the physical and chemical status and biological characteristics of the soil, mature the soil, enhance the fertilizer retention capacity and buffer capacity of the soil, and create good soil conditions for the growth of crops.

2. Increase output and improve quality. Organic fertilizers are rich in organic matter and various nutrients that provide nutrients to crops. After the organic fertilizer is decomposed, it provides energy and nutrients for soil microbial activities, promotes microbial activities, accelerates the decomposition of organic matter, and produces active substances that can promote the growth of crops and improve the quality of agricultural products.

3. Improve the utilization rate of fertilizer. Organic fertilizer contains more nutrients but relatively low content and is released slowly, while chemical fertilizer has high nutrient content per unit and few components and is released quickly. The organic acids produced by the decomposition of organic matter can also promote the dissolution of mineral nutrients in soil and chemical fertilizers.

Organic fertilizer and chemical fertilizer promote each other, which is conducive to crop absorption and improves the utilization rate of fertilizer.

The above is a brief analysis of organic fertilizer, I hope to help you in the purchase of organic fertilizer.

The views on the fertilizer ratio are as follows:

In order to save labor and improve work efficiency, several fertilizers that can be used together are often mixed temporarily or mechanically mixed. However, when mixing, the amount of different fertilizers should be calculated according to the fertility level of different crop types and soils to meet the expected requirements. If you want to prepare 1 ton of mixed fertilizer with nitrogen (N), phosphorus (P2O5) and potassium (K2O) of 12-6-12, the amount of urea (A) containing 46% nitrogen (N), superphosphate (B) containing 14% phosphorus (P2O5) and potassium chloride (C) containing 60% potassium (K2O) can be calculated by the following formula:

n a+p2o5 b+k2o c+d = 1 d here, is the addition when making the mixture 1 ton. The above formula is solved:

12/46+6/14+12/60+d= 11

d = 1-(t).

That is to say, to prepare 1 ton of 12-6-12 compound fertilizer, 260 kg of urea, 430 kg of superphosphate, 200 kg of potassium chloride, in addition, add 110 kg of nitrogen, phosphorus, potassium excipients such as dolomite powder as fillers.

Fertilizer still chooses the kind of big brand and. That kind of compound fertilizer, especially water-soluble, has better absorption.

For the leaves to grow well, apply nitrogen fertilizer. To have a good trunk, apply potassium fertilizer. To shoot more fruits, apply phosphorus fertilizer.

Fertilizers include organic fertilizers, inorganic fertilizers, microbial fertilizers, among which inorganic fertilizers are fertilizers, since the emergence of chemical fertilizers, it has been playing a very important role in improving the yield of crops, so chemical fertilizers are important agricultural materials, is one of the important material bases of agricultural production. Nitrogen fertilizers, including ammonium bicarbonate, ammonium sulfate, ammonium chloride, ammonium nitrate, urea, etc.

There are many types of chemical fertilizers, which are divided from the elements needed by plants, including nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, compound fertilizer, calcium fertilizer, magnesium fertilizer, sulfur fertilizer, trace element fertilizer, and water-soluble fertilizer. In terms of shape, there are solid fertilizers and liquid fertilizers. Biofertilizer is a type of fertilizer formed by inoculating beneficial microorganisms with organic matter such as organic solution or plant ash as the carrier.

The main functional ingredient is microorganisms. The number of organisms required is not less than 200 million grams. It cannot provide nutrients directly as a fertilizer on its own.

We can divide chemical fertilizers into organic fertilizers and inorganic fertilizers, and chemical fertilizers are chemical fertilizers in a narrow sense, that is, inorganic fertilizers, with nitrogen, phosphorus and potassium as a large number of nutrients. There are also elemental trace elements and chelated mixed medium and trace elements. There are four categories of organic fertilizer, chemical fertilizer, biological fertilizer and green fertilizer.

There are two types of fertilizers: solid (granular, powdery) and liquid. The nutrients are elemental, compound, and compound fertilizers. The nutrients are nitrogen, phosphorus, potassium, magnesium, boron, zinc, etc.

Potash fertilizer is a chemical fertilizer with potassium as the main component, mainly potassium chloride, potassium sulfate, potassium nitrate, potassium dihydrogen phosphate, etc., potash fertilizer can strengthen the branches, increase lodging resistance, drought resistance and cold resistance, for tubers and flower and fruit crops, can promote fruit expansion. Trace element fertilizers and certain medium element fertilizers: the former such as fertilizers containing boron, zinc, iron, molybdenum, manganese, copper and other trace elements, and the latter such as calcium, magnesium, sulfur and other fertilizers.

Improve the nutritional value of agricultural products, especially increase the protein content in seeds, and improve the nutritional value of products. The use of nitrogen fertilizers can significantly increase yields.

Organic fertilizer: mainly on plants or animals, after processing (usually fermentation, decomposition, high temperature, etc.) to remove the toxic and harmful substances, applied to the soil to provide plant nutrition of carbon-containing materials.

Inorganic fertilizer: Inorganic fertilizer is mineral fertilizer, also known as chemical fertilizer, abbreviation: chemical fertilizer. It has the characteristics of simple ingredients, high active ingredients, soluble in water, fast decomposition, and easy to be absorbed by the root system.

Production process, consider indicators, use effect. Because of its rich organic matter and multifunctional microorganisms, bio-organic fertilizer can improve the microbial community of crop rhizosphere and play a role in regulating and health care for crop growth.

Generally, it is the composition in the fertilizer, and the types of natural fertilizers will be different depending on the composition.

The fertilizer needs of different crops are not the same.

The fertilizer needs of different crops are also different, let's take a look at them specifically

1. Nitrogen demand characteristics.

1. Different crops have different nitrogen requirements and sensitivities.

Rice, wheat, sorghum, corn and other cereal crops, as well as cotton, vegetables, and fruit trees are crops that require more nitrogen, and the amount of nitrogen fertilizer should be larger. Soybeans, peanuts and other legume crops have rhizobia symbiotic nitrogen fixation, and the nitrogen requirements are not urgent, so less or no nitrogen fertilizer can be applied. Different varieties of the same crop have different fertilizer requirements, and hybrid rice and japonica rice in rice have more nitrogen absorption and demand than conventional rice due to their developed root systems.

Therefore, the distribution of nitrogen fertilizer should be combined with the fertilizer demand characteristics of crops to meet the needs of various crops.

2. Different crops have different degrees of response to nitrogen types.

paddy field: the fertilizer efficiency of ammonium nitrogen fertilizer is greater than that of nitrate nitrogen; Dryland: Ammonium nitrogen fertilizer is as efficient as nitrate nitrogen fertilizer or slightly less.

Carbohydrate-rich crops, ammonium nitrogen fertilizers; The fertilizer efficiency of ammonium nitrogen fertilizer in the early stage of sugar beet was lower than that of nitrate nitrogen, and the fertilizer efficiency of ammonium nitrogen fertilizer was greater than that of nitrate nitrogen in the later stage. Ammonium nitrate was applied to fruit trees, vegetables and tobacco, which had good fertilizer efficiency, which could not only increase crop yield but also improve quality. Potatoes and garlic are sulfur-loving crops, and the application of ammonium sulfate has a good effect on increasing yield, and ammonium chloride should not be applied to potatoes, fruit trees, tobacco and other crops. Among nitrogen fertilizers, urea, ammonium bicarbonate and ammonia are suitable for a variety of crops without obvious selectivity.

Second, the characteristics of phosphorus.

Different crops respond differently to phosphate fertilizers. Generally speaking, leguminous crops (including leguminous green manure), sugar crops (sugarcane, sugar beet), cotton in fiber crops, rape in oil crops, root and tuber crops (sweet potato, potato), melons, fruits, mulberry trees and tea trees all require more phosphorus. Cereal crops are not as sensitive to phosphorus as the above crops, but corn, wheat and barley have better response to phosphorus than millet and rice.

Therefore, on the same soil, phosphate fertilizers should be preferentially distributed to leguminous crops or crops that respond well to phosphate fertilizers.

3. Potassium requirements.

1. Oil crops, potato crops, sugar crops, cotton and linen crops, leguminous crops and leaf crops (tobacco, mulberry, tea) need more potassium, and fruit trees need more potassium, especially bananas. Cereal crops require less potassium, and the cation exchange capacity of the roots of these crops is small, the utilization of monovalent cations is strong, and the potassium absorption from the soil is more, so the effect of potassium application is not significant.

2. The demand for potassium is different in different growth periods: the peak period of potassium demand of general crops appears in the vigorous period of crop growth, such as the tillering of cereal crops to the jointing stage of potassium needs, and its absorption accounts for 60 70 of the total absorption, and it decreases significantly after the flowering period; The potassium requirement period of cotton is from the budding stage to the boll stage, accounting for about 60. Vegetable crops (e.g., nightshades) appear at the bud stage, and pear trees at the fruit development stage; Grapes at the beginning of berry coloring.

Fertilizer needs should not be excessive, but should be in moderation. Before using it, you must be optimistic about what kind of crop and how much fertilizer you need.