How about slow release fertilizer, how to use slow release fertilizer?

Slow-release fertilizer is also known as slow-acting fertilizer or controlled-release fertilizer. The nutrient release rate in the fertilizer can be controlled to a certain extent for the continuous absorption and utilization of crops, and the common slow-release fertilizer on the market is mostly a fertilizer mixed with other fertilizers in a certain proportion after nitrogen fertilizer is coated with resin or sulfur. Generally, slow-release fertilizers are divided into three categories: water-insoluble compounds, coated or coated fertilizers, and carrier slow-release fertilizers.

In order to be able to introduce how to apply slow-release fertilizer in more detail, let's first understand the advantages of slow-release fertilizer:

1: It can reduce the loss of fertilizer nutrients, especially nitrogen, in the soil.

2: It can reduce the number of fertilization, save labor and costs.

3: It can avoid damage to seeds or seedlings caused by excessive fertilization.

4: To increase crop yield and income, the application of slow-release fertilizer can improve the ability of crops to resist disease and lodging, and increase crop yield by more than 5%.

According to the characteristics and advantages of slow-release fertilizer, slow-release fertilizer and fast-acting fertilizer are generally applied with base fertilizer or base fertilizer, and direct contact with seeds is contraindicated when slow-release fertilizer is used as base fertilizer or base fertilizer, otherwise it will affect the emergence of seedlings, and even the phenomenon of burning seedlings and rotting roots will occur.

Joy * full * land * fertilizer * industry.

The effect of slow-release fertilizer is good.

Advantages of slow-release fertilizer.

1. The amount of fertilizer is reduced and the utilization rate is improved. The fertilizer efficiency of slow-release fertilizer is more than 30 days longer than that of general uncoated fertilizer, the leaching volatilization loss is reduced, and the fertilizer dosage can be reduced by 10-20% compared with conventional fertilization, so as to achieve the purpose of saving costs.

2. Easy to apply, labor-saving and safe. It can be applied with fast-acting fertilizer with base fertilizer at one time, reducing the labor of fertilization by about one-third, and the application is safe and prevents fertilizer damage.

3. Increase production and income. After application, the fertilizer effect is stable and long, the later stage is not off, the disease resistance is resistant, and the yield is increased by more than 5%.

Mix soil and fertilize.

Slow-release fertilizer is a kind of inorganic fertilizer with moderate fertilizer efficiency, which is rich in various elements and trace elements, which is different from the fast-acting compound fertilizer usually used. Fast-acting compound fertilizer can be directly soluble in water, but the appearance of slow-release fertilizer granules has a layer of biodegradable resin coating, and water will penetrate through this envelope to evenly dissolve the nutrients in the particles.

The nutrients in it can slowly penetrate out of it with the change of temperature, and go through a long-lasting and long-term process, so the fertilizer effect is relatively longer, and the general fertilizer efficiency is maintained for about four months.

1. Mix soil: The most direct way is to mix the soil with slow-release fertilizer, mix a small amount of slow-release fertilizer with the soil, and finally plant the flowers.

2. Acupuncture:This method is also commonly used, digging a few holes in the potting soil, then putting the slow-release fertilizer into the holes, and then covering it with soil.

3. Shallow burial: Shallow burial of slow-release fertilizer is relatively troublesome, but the effect is very good, and the fertilizer effect will not be lost too much. The soil surface in the pot should be removed first, the slow-release fertilizer should be evenly sprinkled on the soil surface, and then the soil should be evenly placed in the pot.

Precautions for the use of slow-release fertilizer.

It should be noted that the fertilizer effect of slow-release fertilizer is longer, and it is suitable for many people to use plants and flowers. However, it should be noted that the fertilizer release rate of slow-release fertilizer will be affected by temperature, that is, the higher the temperature, the faster its fertilizer effect will be released.

When using slow-release fertilizer, if you are afraid of fertilizer damage, you can choose to use the method of spreading. Sprinkle the slow-release fertilizer directly on the soil surface, and then pay attention to the observation during the curing process, if the fertilizer damage is found, the slow-release fertilizer particles should be selected immediately, which can effectively prevent the fertilizer damage from continuing to appear.

I used 20 pots of flowers in a bag of 100g of slow-release fertilizer, mixed with soil. I found that there seems to be a layer of plastic shell on the outside of the O'green particles, because I added it to the longevity soil, put it on the protective fence and rained a few times, some of the O'green particles were exposed, and they would not dissolve at all, and I used the tip of the chopsticks to puncture the particles. Hydroponic pothos will not dissolve if you add it to it.

As for whether Aolu has an effect, I can't see it, because I also apply water-soluble compound fertilizer.

Usually I buy the universal type. Slow-release fertilizer does not burn the roots, I always grab a handful and sprinkle it into the soil very casually, more or less. However, the effect of slow-release fertilizer is generally not clearly felt. It is still organic fertilizer, and after applying it once or twice, the flowers will grow slowly.

How to use fertilizer, today I will share with you clear steps and several methods, the next time you face a variety of fertilizers, you will know how to use it at a glance.

Compound fertilizer. Refers to the chemical fertilizer containing two or more nutrients, compound fertilizer has the advantages of high nutrient content, few side components and good physical properties, etc., which plays a very important role in balanced fertilization, improving fertilizer utilization rate, and promoting high and stable yield of crops. Slow-release fertilizer is an inorganic fertilizer with mild fertilizer efficiency, which is rich in various elements and trace elements.

Its fertilization effect is comparatively more long-lasting.

Characteristics of slow-release fertilizer of compound fertilizer:Slow-release fertilizers can be divided into three categories, one is insoluble in water compounds, the other is coated or coated fertilizers, and the third is carrier slow-release fertilizers. Even if slow-release fertilizer is applied, fertilizer is still applied in the later growing season.

Slow-release fertilizer can be used as a base fertilizer or as a top dressing. When the base fertilizer is used, just mix it directly into the soil. When topdressing, it can be diluted with water and watered in the soil.

Compound fertilizer production mostly uses soil testing formula to measure the nutrients of the soil, soil testing formula fertilization is based on soil testing and fertilizer field tests, according to the law of crop fertilizer demand, soil fertilizer performance and fertilizer effect, on the basis of rational application of organic fertilizer, the application quantity, fertilization period and application method of nitrogen, phosphorus, potassium and medium and trace elements and other fertilizers are proposed.

The above content reference:

Encyclopedia - Compound fertilizer.

Fast-acting ternary compound fertilizer, slow-release fertilizer, controlled-release fertilizer, general-purpose flower fertilizer, potted flowers.

1. The production process is different

Slow-release fertilizer, also known as long-acting fertilizer, mainly refers to fertilizer that is slower to convert into effective nutrients for plants after being applied to the soil than ordinary fertilizer. In the production process, chemical substances such as oxamide and isobutydiurea are mainly added to make nitrogen fertilizer into organic compounds slightly soluble in water, so that nitrogen is slowly dissolved and released in the soil. or add urease inhibitors and nitrification inhibitors to inhibit urea.

Converted to ammonium carbonate.

and further conversion to ammonium nitrate.

speed. Extend the retention time of nitrogen fertilizer in the soil and reduce runoff.

Controlled-release fertilizer is to prolong the decomposition and release time of fertilizer by means of coating and wrapping, and in the production process, the fertilizer is mainly coated and wrapped in the membrane.

2. The nutrient release method is different

Slow-release fertilizer is simply making nitrogen fertilizer into organic compounds that are slightly soluble in water, and the rate of nutrient release depends on the speed of fertilizer dissolution.

Controlled-release fertilizer is when the fertilizer particles of the coating are in contact with the moist soil, the water in the soil penetrates into the interior through the envelope, so that part of the fertilizer is dissolved, and this part of the water-soluble nutrients slowly and continuously diffuses outward through the micropores on the envelope, and the speed of nutrient release is mainly affected by temperature and soil moisture.

The higher the soil temperature and the higher the water content, the faster the fertilizer dissolves and crosses the membrane.

3. The influencing factors of fertilizer release rate are different

The release of nutrients from slow-release fertilizer is affected by soil pH.

Microbial activity, soil content, soil type.

and the amount of irrigation water and many other external factors.

The rate of nutrient release from controlled-release fertilizer is mainly affected by the thickness of the envelope, soil temperature, soil moisture content and other factors.

4. Different application methods

Due to the single nutrient content of slow-release fertilizer, when used as a base fertilizer, it must be used with fertilizers containing other nutrients.

Controlled-release fertilizer Because it is a fertilizer containing a variety of nutrients wrapped in the membrane, only one type can be used when using.

Slow-release fertilizer is mainly nitrogen fertilizer, which generally provides nitrogen for plants.

The use of slow-release fertilizer can reduce the amount of fertilizer used (about 10-20%), reduce the leaching and volatilization loss of fertilizer, and improve the utilization rate of fertilizer. Slow-release fertilizer can be used as base fertilizer in combination with fast-acting fertilizer, one-time use, which can reduce the amount of labor by about one-third, and is relatively safe and not easy to cause fertilizer damage.

After the application of slow-release fertilizer, the fertilizer effect lasts for a long time, and the later stage does not lose force, which can also improve the disease resistance and lodging resistance of the plant, and increase the yield.

Slow-release fertilizer is greatly affected by temperature. In summer, when the temperature is high, the fertilizer is released faster. Plants that grow slowly or dormant in summer have limited absorption of fertilizer and are prone to fertilizer damage.

Therefore, when fertilizing, it is necessary to consider the growth state of the plants behind, and if it is going to be dormant or the growth is slowing, it is best not to fertilize first, or reduce the amount of fertilizer. There are also slow-release fertilizers, mainly nitrogen fertilizers, which should be used together with other compound fertilizers in the growth process of plants to make the nutrients more comprehensive and balanced.

The above content refers to Encyclopedia - Slow-release fertilizer.

To avoid the root system, just sprinkle a little around the crop (plant) and pay attention to the amount of slow-release fertilizer.

There are several main methods:

1. Soil mixing

Slow-release fertilizers can be mixed directly with the soil. Mix an appropriate amount of slow-release fertilizer with potting soil and plant it before planting.

2. Dig pits and sprinkle fertilizer:

Mix the slow-release fertilizer with a small amount of potting soil and cover it with soil.

3. Large-scale application

Fertilize in blocks and put the slow-release fertilizer into pots.

4. Shallow burial: buried in the surface layer of the soil, although the shallow burial fertilization method is more troublesome, it is a better fertilization method, which can make the fertilization efficiency more uniform and not lose the fertilization efficiency.