How long does it take for fertilizer topdressing to be effective in the field?

Fertilizer is indispensable for us when planting crops, when planting crops, we basically will first put a good base fertilizer and then plant crops, planted crops need corresponding nutrients in the later growth stages, so when we plant crops, we will generally carry out corresponding top dressing in each growth stage of crops, to supplement the nutrients needed for crops, so that it can grow better.

So, how long does it take for the fertilizer topdressing to be effective after the subject asks about it in the ground? For this topic, farmers personally think that how long does it take for fertilizer topdressing to be effective in the ground, which depends on the weather temperature and soil humidity during topdressing, as well as what type of fertilizer is used during topdressing and the method of application during topdressing.

Or organic fertilizer, the fertilizer applied is different, their effective time will be different, and there is no topdressing when using watering, sprinkling, or trenching and other different fertilization methods Its effective time will be different.

When topdressing crops, they are applied to the ground, and at the right temperature and humidity, chemical fertilizers, such as ammonium chloride and urea, are generally more effective.

This kind of fertilizer, after topdressing, can be effective in about 3 5 days, but their fertilizer effect time is not very long, generally only about 30 days, and there is a special fertilizer for crops, their effect time is also relatively fast, generally in a few days can be effective. In one is compound fertilizers, which are basically nitrogen, phosphorus and potassium.

The combination of comprehensive fertilizer, can be used as base fertilizer and top dressing, this kind of fertilizer top dressing can be effective for about 10 days, fertilizer effect than fertilizer will be longer, generally about 90 days.

When topdressing crops, the effect is relatively slow is organic fertilizer, which generally takes 20 days to 30 days or so to take effect, but the fertilizer effect of organic fertilizer is the longest, which can be maintained at about 6 8 months, organic fertilizer is not only long-lasting, but also makes the soil more loose and breathable, and better water and fertilizer retention, so when planting crops, we generally use organic fertilizer as base fertilizer, which can provide more adequate nutrients for crops.

Therefore, farmers personally believe that how long does it take for the fertilizer to be effective when topdressing to the ground, it depends on the weather temperature when topdressing, the humidity of the soil, the fertilizer used in topdressing and the method of topdressing.

Ammonium carbonate: effective on the same day, fertilizer effective period of 15 days;

Ammonium chloride: effective in three days, fertilizer effective period of 25 days, later defertilization;

Urea: effective in seven days, fertilizer effective period of 45 days;

Compound fertilizer: effective in 10 days, fertilizer effective period of 90 days;

One month. In about a month, the fertilizer was completely absorbed, and the vegetables were very plump.

It mainly depends on what fertilizer is used, each fertilizer has a different time of effect, and they are affected by the temperature as well as various aspects of the soil.

The interval between fertilizers depends on the plant species and the type of fertilizer. Usually, if the round is fertilized for the foliar surface, the interval is about 7-14 days. If fertilizing the soil, the interval is usually about 3-4 weeks.

However, the specific interval should be determined according to the needs of the plant, so as not to over-fertilize the plant and cause problems such as poor growth or infection with pests and diseases. At the same time, it is recommended to strictly follow the recommended dosage on the instructions when using fertilizer, excessive fertilization may cause the roots and leaves of the plant to burn the spike. In addition, regular repotting and removal of excess dead leaves and bouquets of plants can also help improve the absorption of fertilizers and promote plant growth.

Fertilizer can be sprinkled in the field for 3 days.

FertilizersIt refers to the substances that can provide nutrients needed for crop growth, improve soil properties, and improve crop yield and quality. It is an important means of production in agricultural production. Generally, it is divided into organic fertilizer, inorganic fertilizer, and biological fertilizer.

It can also be divided into farm fertilizer and chemical fertilizer according to **. According to the amount of nutrients contained, it is divided into complete fertilizer and incomplete fertilizer; According to the characteristics of fertilizer, it is divided into direct fertilizer and indirect fertilizer; According to the components contained, it is divided into nitrogen fertilizer, potassium fertilizer, trace element fertilizer and rare earth element fertilizer.

Fertilizers are essential for increasing crop yields.

The essential nutrients for higher plants include carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, boron, manganese, copper, zinc, molybdenum, chlorine and nickel. These 17 essential nutrients can be divided into macronutrients, medium nutrients and micronutrients due to their different contents in crops. A large number of nutrients in the crop body account for about a few thousandths to tens of percent of the dry matter weight, such as carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, etc.; Medium and micronutrients account for about a few thousandths to a few hundredths of the dry matter weight in crops, such as calcium, magnesium, sulfur, iron, boron, manganese, copper, zinc, molybdenum and chlorine.

The lack of any element will affect the normal growth of crops, for example, nitrogen deficiency will lead to leakage and cause plants to be short and weak, and the leaves are yellow-green, yellow-orange and other abnormal green, when the nitrogen deficiency is severe, the crops are significantly premature senescence and early maturity, and the yield is significantly reduced, and only by increasing nitrogen fertilizer can the harm be reduced.

Nitrogen, phosphorus and potassium dominate China's fertilizer market, and new fertilizers come into being.

The development sequence of China's fertilizer industry is nitrogen fertilizer first, then phosphate fertilizer, then potassium fertilizer, compound (mixed) fertilizer, and the development trend of conventional fertilizer varieties basically follows the mainstream trend of the development of the world's fertilizer industry, that is, to move forward in the direction of high concentration and compounding. The pattern of chemical fertilizers in China is as follows: nitrogen fertilizer is basically self-sufficient, phosphate fertilizer is imported in small amounts, and potassium fertilizer needs to be imported for most of it.

New fertilizer refers to a new variety of fertilizer with a certain fertilizer function and a certain effect of increasing yield, developed and produced by fertilizer production enterprises, in line with industry or enterprise standards, containing organic, inorganic, microbial agents or both, and processed by physical, chemical and biological methods. The new fertilizer can effectively improve a series of problems caused by low utilization rate and overapplication of traditional fertilizer, and the correct application can improve the utilization rate of fertilizer, achieve the purpose of increasing efficiency and yield, reducing quantity and reducing pollution, which is an inevitable requirement for the development of efficient, green and sustainable agriculture.

<> fertilizer types are more than jujube, and the common ammonium chloride fertilizer can be effective in 3 days, and the fertilizer effective period is about 25 days; Urea can be effective in 7 days, and the fertilizer effective period is about 45 days; Compound fertilizer can be effective in 10 days, and the fertilizer effect period is about 90 days; Biofertilizer can be effective in 30 days, and the fertilizer effect period can last for about 6-8 months. The stool collapsed.

In particular, after the application of biological fertilizer in the soil, the fungus adapts to the soil environment and reproduces a process, and if the temperature is relatively low, the effect will be slower. Even, some crops after the use of biological fertilizer, the growth is not as good as normal fertilizer, especially wheat and some vegetables that need to be transplanted, what is the reason?

Crop growth is regular, deep roots can defeat the first leaves, early rooting, mid-term long stems, later fruiting, if the fertilizer is unreasonable or the use of hormones, when the long root system, the stems and leaves are vigorous, the root system is weak, then the stems and leaves are only a symptom, the result will only lead to premature aging and death of crops. We are looking for yield and quality, not stems and leaves, and many people complain that my crops are growing so well, while others are growing mediocre, why is my yield not as high as others? Then you should think about the problem of using fertilizer yourself.

In short, when we choose fertilizer, we can not judge the quality of a product by its growth alone, but understand that the ultimate goal is yield and quality, and fertilizer that can increase yield and ensure quality is a good fertilizer.

Urea is a molecular nitrogen fertilizer, crops can not directly absorb a large amount, must be applied to the soil, under the action of urease secreted by soil microorganisms into ammonium carbonate, (that is, often said ammonium nitrogen fertilizer), crops can be absorbed and utilized in large quantities. In short, according to the characteristics of urea that needs to be transformed after being applied to the soil, in order to better exert the fertilizer effect, it should be converted into ammonium nitrogen in time according to specific conditions for crop absorption and utilization.

Deep application of urea. Whether it is used as base fertilizer or top dressing, it should be deeply covered with soil, and the fertilization depth of 10-12 cm is appropriate; Deep application of urea can significantly improve the utilization rate. According to the test, urea superficial or shallow application of 2-3 cm, the utilization rate is only 30%; The fertilization depth is 5 cm, and the utilization rate is 45%; Apply 10-20 cm deep, and the utilization rate can reach 65%.

Mix urea. The combination of urea and organic fertilizer, phosphorus and potassium fertilizer and trace element fertilizer can maintain soil nutrient balance, maximize nutrient utilization efficiency and increase fertilizer yield.

It can be effective within three days, and at this time you must pay attention to the choice of fertilizer. It is necessary to water the town in time, and at the same time, it is necessary to pay attention to ventilation and not let the outside temperature be too high.

You must pay attention to the humidity of the soil at this time, and you must also water it in time, and you must also pay attention to the specific components of the fertilizer.

Generally speaking, the higher the temperature, the faster the fertilizer effect. For example, urea can be fully decomposed in 1-2 days in summer, while oak banquet takes about 7 days in winter.

The application of ammonium bicarbonate must have suitable soil moisture, otherwise ammonium bicarbonate will volatilize and run away and lose its fertilizer effect.

<> taking vegetable planting as an example, it can generally be applied once every 7-15 days. Fertilizer refers to a class of substances that can provide nutrients necessary for one or more kinds of plants, as well as improve the properties of the soil and improve the fertility level of the soil, and it is one of the basic substances for agricultural production.