阅读说明：本技术 粉体生物膜肥水保持剂 (Powdered biological film fertilizer water retaining agent ) 是由 李彬 张凤云 黄娟 夏强 李阳 贺琴 于 2021-08-11 设计创作，主要内容包括：本发明提供粉体生物膜肥水保持剂,涉及肥料技术领域。粉体生物膜肥水保持剂,以肥料助剂的重量百分比计：聚谷氨酸和葡聚糖含量为4％～10％(重量)、水溶性成膜材料和膜增强剂的含量共为50％～90％(重量)、促生、抗逆、抗病等功能性增效物质的含量为1％～10％。该粉体生物膜肥水保持剂,能提高作物根系的吸水与保水能力,促进氮磷钾和中微量元素吸收,提高肥料利用率,促进生根、壮根,根系发达,能提高保水保肥功能,减少养分损失,延长肥效期。提高肥料养分利用率,且生物膜肥水保持剂中高分子保水材料吸水性好,易于生物降解,安全无毒,且能提高作物的营养吸收效率,提高植物免疫机能,增加植物光合作用效率。(The invention provides a powdery biological film fertilizer water retaining agent, and relates to the technical field of fertilizers. The powder biological film fertilizer water retention agent comprises the following components in percentage by weight: the content of polyglutamic acid and glucan is 4-10 percent (weight), the content of water-soluble film forming material and film reinforcing agent is 50-90 percent (weight), and the content of functional synergistic substances with growth promotion, stress resistance, disease resistance and the like is 1-10 percent. The powder biomembrane fertilizer water retaining agent can improve the water absorption and water retention capacity of crop roots, promote absorption of nitrogen, phosphorus and potassium and medium and trace elements, improve the utilization rate of fertilizer, promote rooting and root strengthening, develop roots, improve the functions of water retention and fertilizer retention, reduce nutrient loss and prolong the fertilizer effect period. The fertilizer nutrient utilization rate is improved, and the polymer water-retaining material in the biomembrane fertilizer water retaining agent has good water absorption, is easy to biodegrade, is safe and nontoxic, can improve the nutrient absorption efficiency of crops, improves the immune function of plants and increases the photosynthesis efficiency of the plants.)

1. The powder biological film fertilizer water retaining agent is characterized in that: the fertilizer comprises the following components in percentage by weight: the content of polyglutamic acid and glucan is 4-10 percent (weight), the content of water-soluble film forming material and film reinforcing agent is 50-90 percent (weight) and the content of functional synergistic substance is 1-10 percent.

2. The powder biofilm fertilizer water retention agent as defined in claim 1, wherein: the water-soluble film forming material consists of 0.5 to 5 weight percent of guar gum and 0.3 to 5 weight percent of glucan gel, and the film reinforcing agent consists of 2 to 10 weight percent of sodium tetraborate and 60 to 85 weight percent of high-viscosity attapulgite powder.

3. The powder biofilm fertilizer water retention agent as defined in claim 1, wherein: the functional synergistic substance comprises: 1 to 15 percent of brown algae oligosaccharide, 0.5 to 4 percent of chitosan oligosaccharide and 0.2 to 1 percent of oligomeric acid.

4. The powder biofilm fertilizer water retention agent as defined in claim 1, wherein: the raw materials are as follows: 50kg of polyglutamic acid, 780kg of high-viscosity attapulgite powder, 50kg of sodium tetraborate, 20kg of alginate oligosaccharide, 20kg of chitosan oligosaccharide, 50kg of glucan, 10kg of glucan gel, 15kg of guar gum and 5kg of oligomeric acid.

5. The powder biofilm fertilizer water retention agent as defined in claim 1, wherein: the molecular weight of the polyglutamic acid is more than 200 ten thousand.

6. The powder biofilm fertilizer water retention agent as defined in claim 2, wherein: the viscosity of the high-viscosity attapulgite powder is more than 1000, and the mesh number is 200-400 meshes.

7. The powder biofilm fertilizer water retention agent as defined in claim 2, wherein: the brown algae oligosaccharide, chitosan oligosaccharide and oligomeric acid have the functions of growth promotion, stress resistance and disease resistance.

8. The method of powder biofilm manure water retention agent as claimed in claim 1, wherein: the preparation process comprises the following steps:

s1, firstly, weighing the raw materials according to the weight ratio;

s2, preparing powder high molecular polyglutamic acid by centrifugal spray drying of the fermentation liquor of the polyglutamic acid;

s3, starting the high-efficiency mixing stirrer, and then sequentially adding 780kg of high-viscosity attapulgite powder, 50kg of sodium tetraborate, 40kg of a mixture of alginate oligosaccharides, chitosan and oligomeric acid, 100kg of polyglutamic acid and 30kg of a mixture of sephadex and guar gum;

s4, stirring for 10-60min, then discharging, and quantitatively packaging to obtain a powdery biomembrane fertilizer water retaining agent;

s5, adding the obtained powder biological film fertilizer and water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%;

and S6, mixing and granulating, drying, cooling, screening and anti-caking treatment to obtain the biomembrane maintaining fertilizer.

9. The powder biofilm fertilizer water retention agent as defined in claim 8, wherein: the mesh number of the high molecular polyglutamic acid is 100-300 meshes.

Technical Field

The invention relates to the technical field of fertilizers, in particular to a powdery biological film fertilizer water retaining agent.

Background

After the fertilizer is applied to soil, the fertilizer cannot be completely absorbed and utilized by crops, and most of the fertilizer is converted into a form which can not be absorbed by the crops due to leaching, volatilization or fixation by the soil and other factors. Therefore, the conventional fertilizer has low nutrient utilization rate and short fertilizer effect period, and cannot meet the growth and development requirements of crops. At present, the utilization rate of the fertilizer in China in season is 30-35 percent of nitrogenous fertilizer, 10-25 percent of phosphate fertilizer and 35-50 percent of potash fertilizer. Due to the low utilization rate of the fertilizer, chemical fertilizer accounting for 32% of the total amount of the world is consumed by land accounting for 9% of the earth in China, and the problems of serious resource consumption, low crop quality, serious environmental pollution and the like are gradually aggravated.

In order to solve the problems, the powder biomembrane fertilizer and water retaining agent has the functions of fertilizer retention, water retention, root promotion, nutrient supply, stress resistance, soil improvement and the like.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: the powder biological film fertilizer water retention agent comprises the following components in percentage by weight: the content of polyglutamic acid and glucan is 4-10 percent (weight), the content of water-soluble film forming material and film reinforcing agent is 50-90 percent (weight) and the content of functional synergistic substance is 1-10 percent.

The water-soluble film forming material consists of 0.5 to 5 weight percent of guar gum and 0.3 to 5 weight percent of glucan gel, and the film reinforcing agent consists of 2 to 10 weight percent of sodium tetraborate and 60 to 85 weight percent of high-viscosity attapulgite powder.

The functional synergistic substance comprises: 1 to 15 percent of brown algae oligosaccharide, 0.5 to 4 percent of chitosan oligosaccharide and 0.2 to 1 percent of oligomeric acid.

The raw materials are as follows:

50kg of polyglutamic acid, 780kg of high-viscosity attapulgite powder, 50kg of sodium tetraborate, 20kg of alginate oligosaccharide, 20kg of chitosan oligosaccharide, 50kg of glucan, 10kg of glucan gel, 15kg of guar gum and 5kg of oligomeric acid.

Preferably, the molecular weight of the polyglutamic acid is more than 200 ten thousand.

Preferably, the viscosity of the high-viscosity attapulgite powder is more than 1000, and the mesh number is 200-400 meshes.

Preferably, the brown algae oligosaccharide, the chitosan oligosaccharide and the oligoacid have the functions of growth promotion, stress resistance and disease resistance.

The preparation process of the fertilizer water maintaining agent for producing powdered biomembrane includes the following steps:

s1, firstly, weighing the raw materials according to the weight ratio.

S2, centrifuging the fermentation liquor of the polyglutamic acid, and then spray-drying to prepare the biological fermentation high-molecular polyglutamic acid;

s3, starting the efficient mixing stirrer, and then sequentially adding 780kg of high-viscosity attapulgite powder, 50kg of sodium tetraborate, 40kg of a mixture of alginate oligosaccharides and chitosan, 100kg of polyglutamic acid and 30kg of a mixture of sephadex and guar gum;

s4, stirring for 10-60min, then discharging, and quantitatively packaging to obtain the powder biological film fertilizer water retaining agent.

S5, adding the obtained powder biological film fertilizer and water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%.

And S6, mixing and granulating, drying, cooling, screening and anti-caking treatment to obtain the biomembrane maintaining fertilizer.

Preferably, the mesh number of the high molecular polyglutamic acid is 100-300 meshes.

In order to verify the application effect of the biomembrane maintaining fertilizer on wheat and provide a basis for the optimization and popularization of the fertilizer efficiency maintaining agent formula, a novel fertilizer effect test demonstration of wheat basal application is carried out.

Materials and methods

1. Fertilizer to be tested: and taking a conventional compound fertilizer as a contrast.

2. Test soil: the method comprises the steps of using sandy ginger black soil, clay loam, moderate fertility as soil, harvesting corn in a machine, crushing the straw, returning the crushed straw to the field, and ploughing and harrowing the corn.

3. The test varieties are: wheat (Triticum aestivum L.).

Second, design of experiment

1. The fertilization conditions under different fertilization treatments are shown in figure 1

50 kg/mu of mixed base application of 48 percent of biological membrane retention fertilizer, and the nitrogen application amount by taking the conventional fertilizer base application and the topdressing as a reference respectively: 15. 12, 8 and 20 kg/mu, the base-topdressing ratio is 8: 2; the base fertilizer is compounded with single element fertilizer, the top dressing is urea, and the two treatments of no fertilizer application and no nitrogen application are additionally arranged for 9 treatments, except that no fertilizer application is carried out, the application amount of the phosphorus-potassium fertilizer in the test area is 6 kg/mu, the phosphorus-potassium fertilizer is randomly arranged in groups and repeated for 3 times, and the area of the test area is 10 square meters.

2. Exemplary fertilizer treatment is shown in FIG. 2

The 48% of the biomembrane maintaining fertilizer is compared with the compound fertilizer on the market in an exemplary way, the fertilizing amount of the fertilizer to be tested is all applied according to 50 kg/mu of base, 50 kg/mu of conventional fertilizer (CK1), 50 kg/mu of conventional fertilizer and 6.5 kg/mu of additional urea (CK2) and blank areas are additionally arranged and arranged in sequence, the middle of the comparison and blank areas is inserted, the area of the test area is 200 square meters, the test area is tested for 10 months and 20 days, manual ditching and drilling are carried out, the topdressing is carried out for 3 months and 11 days, the micro-spraying is carried out for 40min for 3 months and 13 days, and the field management is carried out according to the requirement of a high-yield field.

3. Climatic conditions of production cycle

The climate is not obviously abnormal from 10 middle ten days to 5 months of the next year.

Third, results and analysis

1. The yields of the different treatments are shown in FIG. 3

The yield of 50 kg/mu (CK1) of conventional fertilizer basal application is 385.3 kg/mu, 438.2 kg/mu of N12 basal application (CK2) of conventional fertilizer, 48% of yield of 48% of basal application biomembrane retention fertilizer is 458.1 kg/mu, and the yield is increased by 18.9% compared with CK 1; compared with CK2, the yield is increased by 4.5%, and the yield of 48% of the biomembrane maintaining fertilizer is obviously different from CK1 and is not obviously different from CK 2.

The results show that: 48 percent of the biological film retention fertilizer can ensure the wheat yield under the condition of not carrying out later-stage additional fertilization, and the effect is better than that of the conventional fertilizer base additional fertilization.

2. The utilization rates of nitrogen fertilizers for different treatments are shown in figure 4

The nitrogen fertilizer utilization rate of 48% basal application of the biomembrane maintaining fertilizer is improved by 18.2% compared with CK1 according to the calculation of N3.0kg required for producing 100kg of wheat, and therefore, the nitrogen fertilizer utilization rate can be greatly improved when 48% basal application of the biomembrane maintaining fertilizer is carried out by 50 kg.

3. The effect of the wheat-based fertilizer-retaining agent is shown in FIG. 5

Compared with CK1, the yield of wheat is increased by 72.8 kg/mu by 50kg treatment with 48% basal application of the biomembrane maintaining fertilizer, the yield increasing effect is obvious, the net income increase is 157.4 yuan/mu higher than that of the conventional basal application by the price of 125 yuan of the conventional compound fertilizer, 135 yuan of the novel fertilizer and 15 yuan/mu of topdressing labor, and the net income increase is 35.7 yuan/mu higher than that of the conventional basal application.

4. Conservation fertilizer demonstration effect analysis

Yield and benefit of different treatments see figure 6

The nitrogen application amount per mu of the biomembrane maintaining fertilizer is 12kg, the yield per mu is 533.3 kg/mu, the yield is increased by 14.3 percent compared with the adjacent control of equal nitrogen, and the yield is increased by 8.5 percent compared with the N15 base topdressing combination (CK 2). Compared with the adjacent control, the yield is increased by 143.3 yuan/mu, and the yield is increased by 72.1 yuan/mu more than that of CK2, the benefit is obvious, and compared with the compound fertilizer product on the market, the effect is outstanding, and the advantage is obvious.

Fifth, summarize

The 48% nitrogen fertilizer utilization rate of the biological film retention fertilizer is obviously improved compared with the nitrogen fertilizer utilization rate of the conventional basal fertilizer, the yield and income can be increased, and the biological film retention fertilizer is suitable for being widely popularized. The yield of the biomembrane maintaining fertilizer treatment group can reach equal-nutrient conventional fertilizer base dressing treatment, the yield can be ensured while the fertilizer is saved, and certain effects of saving fertilizer and increasing efficiency are achieved; compared with the yield and benefit of compound fertilizer products on the market, the method has obvious advantages and is worthy of popularization.

Compared with the prior art, the invention provides the powder biomembrane fertilizer water retaining agent, which has the following beneficial effects:

1. the powdery biomembrane fertilizer water retaining agent improves the water absorption and retention capacity of crop roots and promotes the absorption of nitrogen, phosphorus and potassium and medium and trace elements while exerting the slow release effect of the fertilizer through the macromolecular polymer, improves the utilization rate of the nitrogen fertilizer of 48 percent basal application of the biomembrane retaining fertilizer by 18.2 percent compared with CK1 when 100kg of wheat is produced, improves the utilization rate of the fertilizer, and simultaneously promotes the formation of a soil aggregate structure to repair soil.

2. The powder biomembrane fertilizer water retaining agent plays a role in growth regulation after being degraded into oligopeptide and oligosaccharide, promotes rooting and root strengthening, has developed root system and robust plants, is degraded into monomer glutamic acid molecules and monosaccharide, supplies nutrition to crops and microorganisms, and improves the root system and the micro-ecological environment.

3. The powder biomembrane fertilizer and water retaining agent can improve the effect of a hydrogel biomembrane, improve the functions of water retention and fertilizer retention, reduce nutrient loss, prolong the fertilizer effect period and improve the utilization rate of fertilizer nutrients by adding the water-soluble film forming material and the film reinforcing agent, and the polymer water retention material in the biomembrane fertilizer and water retaining agent has good water absorbability, is easy to biodegrade, is safe and nontoxic and can be widely used in the fields of fertilizer synergism, soil conditioning, plant regulation and the like.

4. The powder biological film fertilizer water retaining agent can take root and promote growth by adding functional synergistic substances such as growth promotion, stress resistance, disease resistance and the like, and improves the nutrition absorption efficiency of crops; improving the immune function of the plant and increasing the photosynthesis efficiency of the plant.

Drawings

FIG. 1 is a schematic view of different fertilization processing conditions of the present invention;

FIG. 2 is a schematic view of an exemplary treatment of a fertilizer of the present invention;

FIG. 3 is a schematic of the throughput of the various processes of the present invention;

FIG. 4 is a schematic diagram of nitrogen fertilizer utilization efficiency of different treatments of the present invention;

FIG. 5 is a schematic view showing the effect of the wheat-based fertilizer;

FIG. 6 is a schematic of the throughput and efficiency of the different processes of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the powder biological film fertilizer water retaining agent is as follows:

the first embodiment is as follows: the powder biomembrane fertilizer water retaining agent comprises the following raw materials in percentage by weight:

60kg of polyglutamic acid, 750kg of high-viscosity attapulgite powder, 40kg of sodium tetraborate, 40kg of alginate oligosaccharide, 15kg of chitosan oligosaccharide, 40kg of glucan, 10kg of glucan gel, 35kg of guar gum and 10kg of oligomeric acid.

The preparation process of biological film fertilizer water maintaining agent includes the following steps:

s1, firstly, weighing the raw materials according to the weight ratio.

S2, centrifuging the fermentation liquor of the polyglutamic acid, and then spray-drying to prepare the biological fermentation high-molecular polyglutamic acid;

s3, starting the efficient mixing stirrer, and then sequentially adding 750kg of high-viscosity attapulgite powder, 40kg of sodium tetraborate, 55kg of a mixture of alginate oligosaccharides and chitosan, 60kg of polyglutamic acid, 40kg of glucan, 45kg of a mixture of glucan gel and guar gum and 10kg of oligomeric acid;

s4, stirring for 10-60min, then discharging, and quantitatively packaging to obtain the powder biological film fertilizer water retaining agent.

S5, adding the obtained powder biological film fertilizer and water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%.

And S6, mixing and granulating, drying, cooling, screening and anti-caking treatment to obtain the biomembrane maintaining fertilizer.

The mesh number of the high molecular polyglutamic acid is 100-300 meshes, the molecular weight of water is more than 200 ten thousand, the viscosity of the high-viscosity attapulgite powder is more than 1000, the mesh number is 200-400 meshes, and the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acid have the functions of growth promotion, stress resistance and disease resistance.

The biomembrane fertilizer water retaining agent takes a three-dimensional network framework formed by crosslinking high-molecular polyglutamic acid and glucan prepared by a fermentation method as a framework supporting material to construct a multilayer biomembrane fertilizer nutrient space carrier; adding water-soluble film-forming material, film intensifier and functional synergistic substances for promoting growth, resisting stress and resisting diseases. After being mixed with inorganic fertilizer, the macromolecular structure can exert the embedding effect, and the free carboxyl of polyglutamic acid and the free hydroxyl of dextran can chelate cations such as potassium, magnesium, and the dual function of multilayer embedding and chelation can make the fertilizer reach the effect of slowly-releasing. The fertilizer has strong rooting and stress resistance, fertilizer and water retention functions, forms water-fertilizer-soil swelling granule groups after being applied to soil, reduces the migration rate and volatilization characteristics of water molecules and nutrient molecules and ions dissolved in water, changes the dissolution characteristic and active release property of the fertilizer, can continuously supply sufficient nutrients for the growth of crops, improves the yield and quality of the crops, and simultaneously improves the soil performance.

Example two: 50kg of polyglutamic acid, 780kg of high-viscosity attapulgite powder, 50kg of sodium tetraborate, 20kg of alginate oligosaccharide, 20kg of chitosan oligosaccharide, 50kg of glucan, 15kg of glucan gel and 15kg of guar gum.

The preparation process of biological film fertilizer water maintaining agent includes the following steps:

s1, firstly, weighing the raw materials according to the weight ratio.

S2, centrifuging the fermentation liquor of the polyglutamic acid, and then spray-drying to prepare the biological fermentation high-molecular polyglutamic acid;

s3, starting the efficient mixing stirrer, and then sequentially adding 780kg of high-viscosity attapulgite powder, 50kg of sodium tetraborate, 40kg of a mixture of alginate oligosaccharides and chitosan, 50kg of glucan, 50kg of polyglutamic acid and 30kg of a mixture of glucan gel and guar gum;

s4, stirring for 10-60min, then discharging, and quantitatively packaging to obtain the powder biological film fertilizer water retaining agent.

S5, adding the obtained powder biological film fertilizer and water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%.

And S6, mixing and granulating, drying, cooling, screening and anti-caking treatment to obtain the biomembrane maintaining fertilizer.

The mesh number of the high molecular polyglutamic acid is 100-300 meshes, the molecular weight of water is more than 200 ten thousand, the viscosity of the high-viscosity attapulgite powder is more than 1000, the mesh number is 200-400 meshes, and the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acid have the functions of growth promotion, stress resistance and disease resistance.

The biomembrane fertilizer water retaining agent takes a three-dimensional network framework formed by crosslinking high-molecular polyglutamic acid and glucan prepared by a fermentation method as a framework supporting material to construct a multilayer biomembrane fertilizer nutrient space carrier; adding water-soluble film-forming material, film intensifier and functional synergistic substances for promoting growth, resisting stress and resisting diseases. After being mixed with inorganic fertilizer, the macromolecular structure can exert the embedding effect, and the free carboxyl of polyglutamic acid and the free hydroxyl of dextran can chelate cations such as potassium, magnesium, and the dual function of multilayer embedding and chelation can make the fertilizer reach the effect of slowly-releasing. The fertilizer has strong rooting and stress resistance, fertilizer and water retention functions, forms water-fertilizer-soil swelling granule groups after being applied to soil, reduces the migration rate and volatilization characteristics of water molecules and nutrient molecules and ions dissolved in water, changes the dissolution characteristic and active release property of the fertilizer, can continuously supply sufficient nutrients for the growth of crops, improves the yield and quality of the crops, and simultaneously improves the soil performance.

Example three:

the powder biomembrane fertilizer water retaining agent comprises the following raw materials in percentage by weight:

70kg of polyglutamic acid, 800kg of high-viscosity attapulgite powder, 30kg of sodium tetraborate, 40kg of alginate oligosaccharide, 10kg of chitosan oligosaccharide, 15kg of glucan, 10kg of glucan gel, 20kg of guar gum and 5kg of oligomeric acid.

The preparation process of biological film fertilizer water maintaining agent includes the following steps:

s1, firstly, weighing the raw materials according to the weight ratio.

S2, centrifuging the fermentation liquor of the polyglutamic acid, and then spray-drying to prepare the biological fermentation high-molecular polyglutamic acid;

s3, starting the high-efficiency mixing stirrer, and sequentially adding 800kg of high-viscosity attapulgite powder, 30kg of sodium tetraborate, 50kg of a mixture of alginate oligosaccharides and chitosan, 70kg of polyglutamic acid, 15kg of glucan, 30kg of a mixture of glucan gel and guar gum and 5kg of oligomeric acid.

S4, stirring for 10-60min, then discharging, and quantitatively packaging to obtain the powder biological film fertilizer water retaining agent.

S5, adding the obtained powder biological film fertilizer and water retention agent into a compound fertilizer granulation system according to the proportion of 0.5-4%.

And S6, mixing and granulating, drying, cooling, screening and anti-caking treatment to obtain the biomembrane maintaining fertilizer.

The mesh number of the high molecular polyglutamic acid is 100-300 meshes, the molecular weight of water is more than 200 ten thousand, the viscosity of the high-viscosity attapulgite powder is more than 1000, the mesh number is 200-400 meshes, and the alginate oligosaccharides, the chitosan oligosaccharides and the oligomeric acid have the functions of growth promotion, stress resistance and disease resistance.

The biomembrane fertilizer water retaining agent takes a three-dimensional network framework formed by crosslinking high-molecular polyglutamic acid and glucan prepared by a fermentation method as a framework supporting material to construct a multilayer biomembrane fertilizer nutrient space carrier; adding water-soluble film-forming material, film intensifier and functional synergistic substances for promoting growth, resisting stress and resisting diseases. After being mixed with inorganic fertilizer, the macromolecular structure can exert the embedding effect, and the free carboxyl of polyglutamic acid and the free hydroxyl of dextran can chelate cations such as potassium, magnesium, and the dual function of multilayer embedding and chelation can make the fertilizer reach the effect of slowly-releasing. The fertilizer has strong rooting and stress resistance, fertilizer and water retention functions, forms water-fertilizer-soil swelling granule groups after being applied to soil, reduces the migration rate and volatilization characteristics of water molecules and nutrient molecules and ions dissolved in water, changes the dissolution characteristic and active release property of the fertilizer, can continuously supply sufficient nutrients for the growth of crops, improves the yield and quality of the crops, and simultaneously improves the soil performance.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.