When choosing foliar fertilizer, what are the scientific identification methods if you want to disti

1. Look at the packaging and instructions of the formal foliar fertilizer varieties that meet the national quality requirements should be indicated. 2. Product name, name and address of the manufacturer; 3. Agricultural registration certificate number, product standard number, name and content of active ingredient, net weight, and production date of fertilizer; 4. The product is suitable for crops, applicable areas, use methods and precautions.

Summary. Tip 1: Look at the common name of the foliar fertilizer product.

According to the requirements of the registration standards of the Ministry of Agriculture, several common generic names are: water-soluble fertilizer containing amino acids, water-soluble fertilizer containing alginic acid, water-soluble fertilizer containing humic acid, water-soluble fertilizer containing trace elements, and water-soluble fertilizer containing macroelements. Most foliar fertilizer products will highlight their respective brands and trade names, so buyers rarely pay attention to which type of foliar fertilizer their products belong to, and even many manufacturers do not have a generic name for standard foliar fertilizer.

Tip 1: Look at the common name of the foliar fertilizer product. According to the requirements of the registration standards of the Ministry of Agriculture, several common generic names are:

Water-soluble fertilizer containing amino acids, water-soluble fertilizer containing alginic acid, water-soluble fertilizer containing humic acid, water-soluble fertilizer containing trace elements, water-soluble fertilizer containing macroelements. Generally, foliar fertilizer products will highlight their respective brands and trade names, so buyers rarely pay attention to which type of foliar fertilizer their products belong to, and even many manufacturers do not have a generic name for standard foliar fertilizer. So remind buyers to pay attention:

If there is no standard foliar fertilizer product, the product with the common name is definitely a fake, and it should never be bought.

What is written above, it doesn't say foliar fertilizer, other names, fake foliar fertilizer, will it reduce yield.

Yes, there will be a serious reduction in production.

I'll send you a look, okay.

1. Distinguishing the name of the package: the actual name of the fertilizer should be placed in the most conspicuous place, and the company can not name the fertilizer to confuse the farmers, so it is necessary to see it clearly.

2. Weighing method: counterfeit and shoddy products will often appear inconsistent with the information on the bag, so the actual weight is inconsistent with the weight marked on the bag, for example, the 50kg printed on the bag is actually only 40kg, which is fake.

3. Content: The information signs of counterfeit and shoddy packaging bags are often unclear, and the most basic content is not clearly written, and consumers are not told what kind of fertilizer they are packing.

4. Sealing: In order to ensure that the fertilizer is not easy to leak during transportation and can not be deteriorated in preservation, the inner and outer packaging are subject to special processing procedures and strict sealing.

1.Looking at the packaging bags, there are strict regulations on fertilizer production. The packaging bag should be printed with trademarks, nutrient content, factory name, factory address, production license, etc., and we can all information the authenticity of the information on the Internet or to the relevant departments.

Also check whether the packaging buckle has been unsealed to avoid adulteration.

2.Fire burning method, take a little fertilizer and burn it on the top of the soup spoon, if there are particles that cannot be melted after melting, it proves that the fertilizer is fake, and there is no residue after a good fertilizer is melted.

3.The water-soluble method, which is very similar to the second one, is to find a bottle with water and add chemical fertilizer, the more thoroughly the chemical fertilizer melts, the better the chemical fertilizer.

4.Odor recognition method, chemical fertilizers are all raw materials processed by the factory, and they all have a smell of burning plastic paper. If there is a strong sour smell, it is recommended that you do not use it, as there may be waste sulfuric acid in it. That would burn crops, especially crops like rice.

5.Rubbing your hands, which is often used when we buy fertilizers, is the easiest way to identify. We can't rub the really good fertilizer, and the bad fertilizer may be kneaded into noodles with a handful.

Small circles of big agriculture we farm for the world.

The following number is worth paying attention to.

How to judge the authenticity of chemical fertilizers?The difference between real fertilizer and fake fertilizer may be just a thought.

One. First of all, give priority to the purchase of fertilizers from several large domestic manufacturers, compared with them, the quality of these large manufacturers is still the best, in case there is really a problem, in dealing with the follow-up problems, there will be a good statement, however, many friends respond to a problem, these large manufacturers of fertilizer, compared to it, will be more expensive than small and medium-sized manufacturers, this everyone should be clear.

Two. **Outer packaging, check whether it is standardized, such as whether the certificate number is complete, whether the content standard is correct, whether the manufacturer can be checked, etc., and remind everyone that if the package has words such as "import", "certification" and "unique", you should pay attention, because these words are counterfeit if they are not good.

How to judge the authenticity of chemical fertilizers?The difference between real fertilizer and fake fertilizer may be just a thought.

Three. Take out some samples and test them by calcination, taking ammonium bicarbonate as an example, after calcination, a large amount of white smoke will be produced, and there is a strong smell of ammonia in the air, after a period of time, there will be a little yellow crystals coming out, which can be judged to be true, under normal circumstances, it is to judge the authenticity by the color of the smoke, the smell in it, and the residue after combustion.

Four. Judging by water, continue to give example, wheat topdressing is mainly urea, and urea has a characteristic, it is very easy to dissolve in water, some samples can be removed, and it can be stirred in water, if it is all soluble in water, it is true, if after a period of time, there are still some impurities or residues, it is very likely to be fake.

The above 4 points are more common ways to distinguish, in addition, here is also a reminder that when buying fertilizer, remember to ask for invoices or receipts, just in case, if there is a problem in the future, there will be a situation of non-recognition.

To distinguish the "real and fake" fertilizer, only a bottle of water is needed, which is so practical that farmers are no longer afraid of being deceived!

One look: the high-quality compound fertilizer particles are consistent, no large hard lumps, and less powder. Small red potash granules, or white urea granules may be seen. Compound fertilizer with high nitrogen content can be stored for a period of time, and many attached white fine crystals can be seen on the surface of the fertilizer grains; Inferior compound fertilizers do not have these phenomena.

Second rubbing: rub the compound fertilizer by hand, leaving a layer of gray powder on the hand, and the sticky feeling is the high-quality compound fertilizer. Breaking its particles, you can see that the fine white crystals are also of high quality. Inferior compound fertilizer is mostly gray-black powder, no stickiness, and no white crystals in the particles.

Three burning: take a little compound fertilizer and put it on the iron sheet and burn it on an open flame, there is an ammonia smell indicating nitrogen, and a purple flame indicates potassium. The stronger the ammonia smell and the longer the purple flame is the high-quality compound fertilizer. On the contrary, it is inferior quality.

Four dissolving: high-quality compound fertilizer will dissolve in water, even if there is a small amount of precipitation, it is relatively small. Inferior compound fertilizer is rough and hard, and difficult to dissolve in water.

Five smells: compound fertilizers generally have no peculiar smell (except for organic and inorganic compound fertilizers), if they have peculiar smells, it means that they contain ammonium bicarbonate or toxic substances trichloroacetaldehyde (acid), etc.

Its quality can be judged by "one look, two touches, and three blisters."

One look: look at the appearance color of organic fertilizer. The organic fertilizer dried by the physical method still retains the original color of the manure, but the water content is reduced, and the organic fertilizer treated by the composting technology becomes brown or black-brown after decomposing. There are no other impurities in the finished product.

Two touch: grab a good organic fertilizer with your hands, feel the same, soft and elastic when wet, brittle and easy to break when dry, poor quality organic fertilizer can touch impurities with your hands, especially sand.

Three blisters: Take two cups of water, put some good and low-quality organic fertilizer into it, and you can distinguish the authenticity in a few minutes. Organic fertilizer adulteration is usually done by adding sand or soil to add weight. Good organic fertilizer is evenly distributed in water, while the bottom of the cup of poor organic fertilizer sinks into a lot of sand or soil.

The test method of powdered organic fertilizer is to put the powdered organic fertilizer directly in a glass of water, if it is floating, then it is a qualified organic fertilizer, if it sinks directly, then this organic fertilizer may have problems, because organic matter is lighter than water. To detect granular organic fertilizer, it is to put it in water to see the solubility, under normal circumstances, the more precipitation, the better, the higher the solubility, the better.

The following methods can be used.

One touch: slippery and dry, and it is high-quality fertilizer that can be scattered when you touch it.

Second smell: If there is a little fragrance and sake lees smell, it is better to rot.

Three looks: the off-white is over-rotten, and it is generally not recommended to choose. Semi-decomposed organic fertilizer is used in the field, which continues to decompose in the ground and can be combined with organic matter in the soil to form new humus, which has a better effect.

It should be noted that the action period of organic fertilizer is relatively long, and it also takes a process to fertilize the soil.

The following method of querying the truth and falsehood is a summary of personal practice, taking Dehua Xinlu query as an example, combined with ** and text to share with friends.

Log in to the official website of the National Fertilizer Inspection Center, as shown below

3.Then click on the fertilizer registration announcement, enter the query list, select "Enterprise Name Query", and enter the enterprise name such as Dehua Xinlu as shown below

The second trick is to test by hand.

Some of the water-soluble fertilizers are of poor quality due to the problem of inferior material selection. The product is prone to crystallization. This kind of product is inferior products, the effect is not obvious, and then the packaging inspection, the packaging is divided into plastic, aluminum coils, etc.

Aluminum coils are shiny and smooth, and the quality is much better.

The third trick is on-site weighing.

High-quality foliar fertilizers often weigh more than they do. For example, the volume is 100 ml, but the actual weight should be greater than 100 grams.

The reason is that all products according to the national registration indicators are pure organic fertilizers that need to be produced by chelation reaction, and the volume of 100 ml should be fully dissolved in various nutrients greater than 100 grams of water, so the actual weight will be greater than 100 grams.

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