What is the relationship between soil fertility retention and fertilization and fertilization? What

What is the relationship between soil fertility retention and fertilization and fertilization?

Soil fertility refers to the ability of the soil to absorb and retain nutrients. Soil fertility refers to the ability of soil to release and ** plant nutrients. Good soil should cooperate with fertilizer to ensure the supply of nutrients to meet the nutrient needs of crops at any time.

The soil with heavy texture and high organic matter content has good fertilizer retention performance, and the applied fertilizer is not easy to lose, but the fertilizer supply is slow, and the effect is slow after fertilization. However, in soils with high sandiness and low organic matter content, the application of fast-acting fertilizers such as ammonium sulfate and urea is easy to lose with rain or irrigation water. Such soil "produces small seedlings and does not grow old", although the fertilizer supply performance is good, but there is no stamina, and the crop yield is not high.

Therefore, fertilization should be targeted at different soils, and the fertilization measures are also different.

For the soil with poor fertilizer retention and low organic matter content, in addition to applying more organic fertilizer in the base fertilizer, chemical fertilizer should also be applied "in stages" to avoid excessive one-time fertilization causing "seedling burning" and nutrient loss, and to prevent premature aging caused by later fertilization.

For clay soils with good fertilizer retention or high organic matter content, because of good fertilizer retention, the amount of chemical fertilizer can be increased at one time, which will not cause "seedling burning" and nutrient loss. But this kind of soil "grows seedlings, not seedlings". Seed fertilizer or early topdressing should be used to promote early growth in the early stage of crop growth, and the amount of chemical fertilizer, especially nitrogen fertilizer, should be controlled in the middle and late growth stage to avoid excessive growth and yield reduction.

What are the methods of soil fertilization?

1) Circular fertilization. Young trees have a small root distribution, so this method is commonly used. This method is simple and economical. The disadvantage is that the circular ditching has great damage to the horizontal root system and the fertilization area is small.

2) Radiant ditch fertilization. This method is generally used for trees in the peak fruiting stage. When ditching, this method digs in the direction of horizontal growth of the root system, which causes less damage to the root system. Moreover, the fertilization site can be changed every other year or every once in a while to expand the fertilization area and promote root absorption.

3) furrow fertilization. That is, the ditch between the pomegranate trees is often combined with the deep turning of the pomegranate orchard in autumn. When ditching, fertilizer is applied in each row or alternately rows, depending on the specific situation. This method is mostly used for autumn fertilization in kindergartens with deep ploughing, wide rows and dense planting.

4) Cave fertilization. That is, under the vertical projection of the canopy, evenly dig pits and fertilize. This fertilization method is mostly used for top dressing during the growth period of mature gardens.

5) All over the park. This method is used when the orchard is closed at the fruiting stage and the root system is dense throughout the garden. The fertilization area is large, and the pomegranate tree absorbs a large area, but it cannot be used every year. Instead, it should be combined with deep tillage and fertilization, and used alternately.

Fertilizer retention and fertilization are a relationship of mutual absorption and mutual accumulation, and fertilization and fertilization are a kind of relationship that coordinates each other and can meet the demand for crop nutrients. There are three main types, full-layer fertilization, radial ditch fertilization, and ring fertilization, which are very good and particularly convenient.

Soil fertility retention refers to the ability of soil to absorb and retain nutrients;

Soil fertilisation refers to the ability of soil to release and supply nutrients to plants;

For the soil with poor fertilizer retention and low organic matter content, in addition to applying more organic fertilizer in the base fertilizer, the application of chemical fertilizer should be "a small amount and many times", so as to avoid excessive fertilization at one time to cause "seedling burning" and nutrient loss, and to prevent premature aging caused by later defertilization.

There will be a direct impact, sometimes depending on the type of fertilizer, and sometimes there is a problem with the type of fertilizer that will affect the fertility of the soil. The fertilizer can be spread on the bottom of the soil as a base fertilizer, and then some compound fertilizer can also be sprinkled on the surface.

The fertilizer in the soil for plant growth is nitrogen, phosphorus and potassium fertilizer, which is the fertilizer that is most demanded by plants during the growth process. Nitrogen fertilizer can make plant branches and leaves grow more luxuriantly and increase the chlorophyll content of leaves. During the growth of the plant, the application of phosphate fertilizer can improve its own cold resistance and avoid frostbite of the leaves.

Potassium can be used as a base fertilizer to produce more vibrant flowers.

The fertilizers in the soil for plant growth are nitrogen, phosphorus and potassium fertilizers, which are the ones that require the most nutrients for plant growth and take away the most after harvest. Among them, nitrogen is an essential component for plant growth, and phosphorus is second only to nitrogen and potassium in plants, and potassium is the main nutrient required for plant growth.

Nitrogen fertilizer can make the branches and leaves of plants grow more luxuriantly, increase the chlorophyll content in the plant, and replenish the nutrients needed for growth. Note that the amount of nitrogen fertilizer should not be too large in the process of using nitrogen fertilizer, otherwise it will make the plant stems and leaves grow, the disease resistance will deteriorate, and the cold tolerance will become low.

The phosphate fertilizers used in daily life are mainly divided into organic phosphorus fertilizers and inorganic phosphate fertilizers, and organic fertilizers include fertilizers with high phosphorus content such as bone meal, rice bran, and poultry fertilizers. Inorganic phosphate fertilizers include calcium phosphate, mineral phosphorus powder, calcium, magnesium phosphate fertilizer, etc. The application of phosphate fertilizer can effectively improve the cold resistance of the plant and avoid frostbite on the leaves.

Potash fertilizer can generally be used as basal fertilizer, top dressing or foliar fertilizer, and can achieve better results when used as basal fertilizer and foliar fertilizer. Before planting, a sufficient amount of plant ash can be mixed into the soil to meet the plant's need for potassium during the growth period, thereby improving the overall growth, making the plant produce more colorful flowers or improving the quality of the fruit.

Hello! The soil mainly contains nitrogen, phosphorus, and potassium nutrients for plant growth, followed by trace elements such as iron, calcium, copper, carbon, magnesium, sulfur, chlorine, manganese, boron, zinc, and other minerals.

Increase the application of organic fertilizer.

By applying manure, urine manure and compost, manure, green manure and other agricultural fertilizers with high organic matter content to increase or maintain the content of soil organic fertilizer, a large amount of fertilizer (river mud, grass carbon, etc.) can be applied in places where conditions permit, and it is obvious to improve the content of soil organic matter.

Second, straw returning to the field.

Straw returning is an effective measure to improve the soil and increase the soil production capacity. First, the straw is applied to the soil after being piled; The other is that after the crop is harvested, the straw is chopped and sprinkled on the surface of the ground and pressed with a plow, and directly returned to the field, which can improve the physical properties of the soil, promote the formation of soil aggregate structure, increase air permeability, water permeability, and fertilizer retention capacity, thereby improving soil fertility.

3. Reasonable crop rotation.

Reasonable crop rotation is the cultivation method of land cultivation, pay attention to two points in the rotation: one is to appropriately increase the planting area of leguminous crops, in the rotation process about four years to plant a legume crop can increase the nitrogen content in the soil, at the same time, leguminous green manure crops after turning into the soil, a large number of roots, stems, leaves can increase soil organic matter, improve soil physical and chemical properties, improve soil fertility; Second, the planting of land-consuming crops should be controlled for many years, and beans and melon crops should not be heavy and not stubble, and should be rotated for more than five years, which is conducive to restoring soil fertility and preventing and controlling diseases.

Fourth, plant grass and fertilize the field.

The planting of leguminous forage grasses should be vigorously advocated to fertilize the soil and increase economic yield. At present, it can be planted with grass rhinoceros and alfalfa, etc., in order to improve the soil, cultivate soil fertility, and increase soil production capacity.

5. Rationally adjust the proportion of agricultural, forestry, and pastoral land.

The development and restoration of forestry is a powerful measure to balance the ecology, improve the climatic conditions, and turn the vicious circle into a virtuous circle. Rational animal husbandry development can provide a large amount of organic matter for the soil, which is a direct measure to fertilize the soil and improve crop yields.

Summary. Dear, here are five ways to do it:1

Soil testing method: through soil testing, analyze the content of nutrients in the soil and pH value and other indicators, so as to determine the type and amount of fertilizer that need to be fertilized. 2.

According to the crop requirement determination method: different crops have different nutrient requirements, so the amount of fertilizer can be determined according to the needs of the crop. It is usually determined on the basis of a recognized scale of crop nutrient requirements.

3.Soil type and texture method: Different soil types and textures have different adsorption and retention capacity for fertilizer, so the appropriate amount of fertilizer needs to be determined according to soil type and texture.

4.Empirical method: Determine the amount of fertilizer based on past fertilization experience.

However, this method requires a certain amount of fertilization experience and skills, otherwise over-fertilization or under-fertilization may occur. 5.Leaf diagnostics:

By measuring the nutrient content in the leaves of crops, the nutrient deficiencies of crops and the type and amount of nutrients that need to be fertilized can be determined. This method requires specialized equipment and techniques and is often suitable for large plantations or farms.

Dear, here are five ways to do it:1Soil testing method:

Through the detection of the soil, the content of nutrients in the soil and the pH value and other indicators are analyzed, so as to determine the type and amount of fertilizer that need to be fertilized. 2.According to the crop demand to determine the high and late:

Different crops have different nutrient requirements, so the amount of fertilizer can be determined according to the requirements of the celery crop. It is usually determined on the basis of a recognized scale of crop nutrient requirements. 3.

Soil type and texture method: Different soil types and textures have different adsorption and retention capacity for fertilizer, so the appropriate amount of fertilizer needs to be determined according to soil type and texture. 4.

Empirical method: Determine the amount of fertilizer according to Qi Pai Li's past fertilization experience. However, this method requires a certain amount of fertilization experience and skills, otherwise over-fertilization or under-fertilization may occur.

5.Leaf diagnostics: By detecting the nutrient content in the leaves of crops, the nutrient deficiency of crops and the type and amount of nutrients that need to be fertilized are determined.

This method requires specialized equipment and techniques and is often suitable for large plantations or farms.

You refer to the following.

Soil fertility refers to the soil's ability to adsorb and retain nutrients. Soil fertilisation refers to the ability of soil to release and supply nutrients to crops. A good soil should be in harmony with fertilizer conservation, which can meet the nutrient needs of crops at any time.

The soil with heavy soil texture and more organic matter has good fertilizer retention performance, and the fertilizer applied is not easy to be lost, but the fertilizer supply is slow, and the effect after fertilization is also slow; Sandy soil, soil with low organic matter content, applied ammonium sulfate, urea, potassium chloride and other fast-acting fertilizers are easy to be lost with rainwater and irrigation water, although the fertilizer supply is good, but there is no stamina, the result is "small seedlings, no old seedlings", and the crop yield is also low. Therefore, there should be differences in fertilization for soils with different fertilizer retention and fertilizer supply capacity. For sandy soils with poor fertility retention and soil with little organic fertilizer content, in addition to applying more organic fertilizer in the base fertilizer, chemical fertilizer should be applied "a small amount and many times", so as to avoid "seedling burning" and nutrient loss caused by excessive dosage at one time, and prevent premature aging caused by later defertilization; For the cohesive soil with good fertilizer retention performance, or the soil with more organic matter, because of the good fertilizer retention, the amount of chemical fertilizer is more at one time, and it will not cause "burning seedlings" or nutrient loss, but this kind of soil "old seedlings, not small seedlings", in the early stage of crop growth, seed fertilizer or early top dressing should be applied to promote early onset, and the amount of nitrogen fertilizer should be controlled in the middle and late stages of growth, so as not to cause crop greed or crazy growth, resulting in reduced yield.

Now whether it is farmland or flowers, a large number of inorganic fertilizers are used, long-term use of inorganic fertilizers will lead to soil hardening, reduce soil fertilizer efficiency, so in terms of improving soil fertilizer efficiency, to reduce the use of inorganic fertilizers, such as compound fertilizer, urea, these are inorganic fertilizers, reduce chemical fertilizers, the use of organic fertilizers, such as sheep manure, chicken manure, bean cake, sesame cake water. This series of organic fermentation fertilizers, one is to improve soil fertility, the other is to increase the formation of microorganisms in the soil, which can improve the compaction of the soil and make the soil better and better. The soil of potted flowers and nursery farms is organic matter, such as peat and coconut peat, and the loose soil is good in the nursery farm, and the plants raised are also very good, but many people use garden soil to cultivate at home, and it is easy to use inorganic fertilizer again after the garden soil hardens, and the soil is easier to harden, and the soil is more likely to harden for a long time, reducing the effect of soil fertility.

Growing plants at home can find that the soil is getting harder and harder, and in this case, how can you make the soil fertile again and breathe freely? A lot of friends are talking about fertilization. If chemical fertilizer is applied for a long time, not only can it not play the role of fertilizing the soil, but also the utilization rate of chemical fertilizer is very low, which will also cause soil compaction.

It can also be directly undertaken to change the soil, and for small plants, it can also be done, but it is more troublesome for large potted plants. To make compacted soil more loose, there are ways to improve the soil.

Organic fertilizers, such as chicken manure and sheep manure, have more organic matter and microorganisms in these fertilizers, which can be mixed into the soil to increase the content of organic matter and microorganisms in the soil, so as to improve the soil. Fertile soil, in fact, is a biological community, not pure loess or clay, sand, etc., generally healthy soil can generally be divided into several common parts, the first is inorganic soil, loess, which is common to us followed by organic matter, which is the basis for the survival of microorganisms and insects, the third is rich in microorganisms, insects, etc., of course, others such as moisture and air are also necessary.

Now the soil hardening in many places and too many experts attribute the soil hardening to the excessive use of chemical fertilizers, in fact, in my opinion, this is a bit one-sided, the real reason for the hard soil is not the excessive use of chemical fertilizers, but because many people use a lot of chemical fertilizers. Organic fertilizer is no longer used, so the soil organic matter is excessively reduced, and beneficial bacteria, microorganisms, insects and earthworms cannot grow and survive normally in the soil, so the ecological community of the soil becomes more and more fragile, and finally causes the soil to be poor. In the past, our rural areas were composted farming, and now everyone is lazy and easy not to compost, but foreign compost has been very prosperous, it seems that we also have to reflect on it, after all, the tide of economic development, so that we tend to do one thing, will use the most convenient method to maximize benefits.