JPH10297985A - Agent for improving calcium cyanamide, composition and granule containing the same, and controlling of hydrolysis rate of calcium cyanamide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a calcium cyanamide-modifying agent suitable for a calcium cyanamide fertilizer capable of controlling a fertilizer effect and an agrochemical effect without being affected by soil, etc., by including a substance for retarding the hydrolysis rate of the calcium cyanamide, to obtain a calcium cyanamide composition containing the modifying agent, and to obtain a fertilizer. SOLUTION: This calcium cyanamide-modifying agent comprises a compound having a functional group of the formula, such as one or more kinds of hydroxy carboxylic acids, their salts, ketocarboxylic acids and their salts. The calcium cyanamide-modifying agent comprises also a saccharide having the functional group of the formula or a saccharide capable of being decomposed into the saccharide having the functional group of the formula, preferably waste molasses, a waste solution on the production of sugar, or a corn syrup, further one or more kinds of aromatic sulfonic acids or lignin sulfonic acids or their salts, preferably pulp waste fluids, or further a compound having an aromatic ring having plural hydroxyl groups bound thereto, or preferably a compound having hydroxyl groups at the adjacent positions of the aromatic ring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a lime nitrogen composition containing lime nitrogen, for example, when used in fertilizers.
The present invention relates to a lime nitrogen composition having a characteristic that a hydrolysis rate is controlled and a fertilizer effect and an agrochemical effect can be adjusted, and a granulated product thereof. The present invention also relates to a method for adjusting the hydrolysis rate of the lime nitrogen composition and its granulated product by appropriately controlling the proportion of a lime nitrogen modifier.

[0002] Lime-nitrogen fertilizer is a slow-release fertilizer containing calcium cyanamide as a main component and has a pesticidal effect and has been awarded for many years. However, the slow-release effect of lime nitrogen fertilizer is susceptible to soil, and the pesticide effect appears within 1-2 days after application, and the medicinal effect lasts for about one week after the onset. Have difficulty. For this reason, there has been a drawback that the intended use for maintaining the medicinal effect for a longer period of time cannot be satisfied and workability is poor. Therefore, a lime nitrogen fertilizer that is not affected by soil and the like and that can adjust the fertilizer effect, for example, the period until nitration, and the pesticide effect, for example, the sustained release of cyanamide, is desired.

[0003]

2. Description of the Related Art Conventionally, it has been known that fertilizers are formed into granules and the surface thereof is coated with a resin or the like in order to adjust the solubility of the fertilizer components to achieve a slow effect. 30
No. 40, Japanese Patent Publication No. Sho 60-21952, Japanese Patent Publication No. 2
However, all of these objects relate to fertilizers such as urea, ammonium sulfate, ammonium nitrate, and potassium chloride, and do not relate to lime nitrogen fertilizers. With respect to lime nitrogen fertilizer, it is only disclosed that the surface of the granulated lime nitrogen fertilizer is coated with sulfur (Japanese Patent Publication No. 40-22896).

[0004] The above-mentioned granular lime nitrogen fertilizer coated with sulfur is rather manufactured so as not to suppress the elution, so that when the soil is different, the fertilizing effect is maintained and the slow effect and the pesticide effect are maintained. Can be difficult to adjust,
Ingenuity and improvement such as granulating lime nitrogen fertilizer and coating the surface with a thermoplastic resin or a rubber polymer have been further advanced.

However, all of the above methods aim at substantially reducing the surface area of lime nitrogen in a portion that comes into contact with water when lime nitrogen in lime nitrogen fertilizer is hydrolyzed. When hydrolysis of lime nitrogen is started, its effect is lost and the rate of hydrolysis increases, and as a result, it is possible to adjust the slow release and pesticide effects while maintaining the original fertilizing effect of lime nitrogen fertilizer It can be difficult.

[0006]

DISCLOSURE OF THE INVENTION The present inventors have made various experimental studies to solve the above-mentioned problems, and found that the rate of hydrolysis of lime nitrogen can be delayed in the presence of a specific substance. The present invention has been accomplished, the object of the present invention is a lime nitrogen fertilizer suitable for lime nitrogen fertilizer that can adjust the fertilizer effect and pesticide effect without being affected by soil, etc., and a lime nitrogen modifier An object of the present invention is to provide a lime nitrogen composition and a fertilizer containing the same. Further, another object of the present invention is to provide a granulated product of the lime nitrogen composition in which the fertilizer effect and the pesticide effect can be adjusted without being affected by soil and the like, and the workability is excellent. . Further, an object of the present invention is to provide a method for controlling the hydrolysis rate of the lime nitrogen composition so that the composition and the granulated product thereof can easily exert a fertilizing effect and an agrochemical effect according to soil and climatic conditions. Is to do.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a lime nitrogen modifier comprising a substance which delays the rate of lime nitrogen hydrolysis, comprising lime nitrogen and the modifier. It is a lime nitrogen composition characterized by the above-mentioned. More specifically, in the present invention, the modifier is a compound having a functional group represented by the formula (1), and the compound having a functional group represented by the formula (1) is oxycarboxylic acid or It is characterized by being at least one selected from the group consisting of a salt thereof and a ketocarboxylic acid or a salt thereof. In the present invention, the modifier is a saccharide having a functional group represented by the formula (1) or having a functional group represented by the formula (1) after decomposition, and preferably molasses or saccharide. It is characterized by being a waste liquid during production (hereinafter referred to as sugar waste liquid) or corn syrup. Further, the present invention is characterized in that the modifier is at least one selected from aromatic sulfonic acid or lignin sulfonic acid or a salt thereof, and is preferably a pulp waste liquid. Further, in the present invention, the modifier is a compound having an aromatic ring in which a plurality of hydroxyl groups are bonded, and preferably, the compound in which a hydroxyl group is bonded to adjacent carbon in the aromatic ring. It is characterized by the following.
In addition, the present invention is a lime nitrogen composition containing lime nitrogen and a modifier.

[0008]

Embedded image

The present invention relates to a lime nitrogen composition granulated product obtained by adding water to the lime nitrogen composition and drying the same. Preferably, the lime nitrogen composition contains lime nitrogen in the lime nitrogen composition. The lime nitrogen composition granulated product, wherein slaked lime is pre-slaked. The present invention also relates to a method for controlling the hydrolysis rate of a lime nitrogen composition containing lime nitrogen and a modifying agent, wherein the compounding ratio of the modifying agent to lime nitrogen is changed so that the lime nitrogen is hydrolyzed. This is a method for controlling the rate of hydrolysis of a lime nitrogen composition, which comprises controlling the rate of decomposition.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Lime nitrogen comes into contact with water contained in soil and the like, and is hydrolyzed to form a medicinal H ₂ CN.
₂ (Cyanamide), via urea, N
H ₄ ^+, NO ₃ ^- may change are known. As described above, lime nitrogen undergoes hydrolysis in the soil to release the cyanamide, but the hydrolysis is generally completed in 1 to 2 days, and the generated cyanamide is further hydrolyzed to urea or the like. As it goes, the medicinal effect is completed in about one week. The rate of hydrolysis of lime nitrogen can be slowed to slow down the rate of cyanamide generation, and the rate of subsequent generation of urea and the like can be slowed down, making it possible to prolong and extend the fertilizing effect. Therefore,
In order to adjust the fertilizing effect and the pesticidal effect, it is essential to adjust the rate of hydrolysis and the rate of generation of H ₂ CN ₂ , urea, NH ₄ ⁺ and NO ₃ ⁻ . As a method of adjusting the hydrolysis rate, conventionally, for example, granulate lime nitrogen fertilizer, and coat the particle surface with a resin or the like,
Attempts have been made to adjust the elution of lime nitrogen in lime nitrogen fertilizer by reducing the contact area with water in the soil, but it has not always been possible to achieve the objectives sufficiently.

The present inventors have conducted various experimental studies based on the idea that the rate of hydrolysis of lime nitrogen is reduced by coating the surface of lime nitrogen solid with a specific substance in a microscopic order, When performing the hydrolysis of lime nitrogen while coexisting a specific compound having a strong affinity for calcium element with lime nitrogen, it has been found that the rate of hydrolysis of lime nitrogen can be adjusted, which has led to the present invention. It is. The present invention utilizes the affinity of the lime nitrogen modifier for the calcium element in the lime nitrogen fertilizer, and is completely different from the conventional concept.

The modifier of the present invention may be any modifier that has an affinity for the calcium element, easily forms a chelate compound or an adsorbed molecule, and can cover the calcium element at a molecular level. According to studies by the present inventors, a compound having a functional group represented by the formula (1) can be given. The molecular groups and atomic groups that bind to the functional group represented by the formula (1) preferably have an appropriate size so that calcium once bonded to the functional group does not bind to water molecules again. According to the study of the present inventors, for example, those having about 3 to 20 carbon atoms are suitable, and when the number of carbon atoms is 2 or less, or more than 20, some of them have insufficient hydrolysis retardation properties.

Examples of the compound having a functional group represented by the above formula (1) include oxycarboxylic acids such as gluconic acid, glucoheptonic acid, citric acid and tartaric acid and salts thereof, and ketocarboxylic acids represented by pyruvic acid and the like. And its salts.

Further, according to the study of the present inventors, among the saccharides, those having a functional group represented by the formula (1) or having a functional group represented by the formula (1) when decomposed, For example, monosaccharides such as glucose, lactose, oligosaccharides such as saccharose, dextran, polysaccharides such as β-cyclodextrin, and the like, have the same effect, and can be used as the lime nitrogen modifier of the present invention. it can. Further, derivatives of the above saccharides can also be used. It is to be noted that molasses, waste liquor, corn syrup and the like containing the above-mentioned saccharides are preferably used because they are inexpensive and a high-strength granulated product can be easily obtained.

As the modifier of the present invention, aromatic sulfonic acids such as dodecylbenzenesulfonic acid, decylbenzenesulfonic acid, undecylbenzenesulfonic acid, tridecylbenzenesulfonic acid, and other alkylbenzenesulfonic acids, and lignin. Sulfonic acids or their salts can be used. Further, a pulp waste liquid containing ligninsulfonic acid or a salt thereof as a component can also be used. Further, a water reducing agent widely used in the field of cement, for example, a waste liquid from the production of isoprene can also be used. The pulp waste liquid is preferably used because a high-strength granulated product can be obtained at low cost.

Further, as the modifier of the present invention, a compound having an aromatic ring to which a plurality of hydroxyl groups are bonded can be used. Examples of the compound include hydroquinone, catechol, pyrogallol, benzenetetrol, benzenepentolol, benzenehexyl, and derivatives thereof such as 1,2,4-benzenetriol, gallic acid, 2,4,6-hydroxybenzoic acid. And gallic acid. Of these, catechol, pyrogallol,
Compounds having a molecular structure in which a hydroxyl group is bonded to adjacent carbon atoms in an aromatic ring, such as gallic acid, are preferred because they have more remarkable effects.

The above-mentioned lime nitrogen modifiers can be used alone, or two or more of them can be used in combination. Alkaline metals, salts of alkaline earth metals other than calcium, etc. Any salt may be used as long as it has an affinity for calcium.

Commonly available lime nitrogen is mainly composed of lime nitrogen (CaCN ₂ ), and includes sub-components such as quicklime (CaO), slaked lime (Ca (OH) ₂ ), and carbon (C). Although various compositions are known, any of them can be used in the present invention.

In the present invention, in order to exert its effect, the modifier must be added in an amount exceeding the amount corresponding to calcium element which is not bound as lime nitrogen in the lime nitrogen fertilizer. The reason for this is that, as described above, in a normal lime nitrogen fertilizer, calcium elements that are not bound as lime nitrogen, such as quick lime and slaked lime, are present in some amount, and therefore the compounded modifier is lime nitrogen It acts on both the calcium element bound as lime and the calcium element which is not bound as lime nitrogen, and exhibits a phenomenon in which part of the modifier incorporated in the fertilizer is consumed as if it were consumed.

According to the study of the present inventors, since the modifier has a similar or stronger affinity to calcium element which is not bound as lime nitrogen, the modifier behaves as if consumed. That is, when increasing the amount of the lime nitrogen modifier, until the amount of calcium element that is not in a bonded state as lime nitrogen contained in the lime nitrogen fertilizer is appropriate, the effect of delaying the hydrolysis rate is The effect is not exhibited, but when the amount exceeds the above-mentioned amount (hereinafter referred to as a threshold value), the effect gradually becomes stronger. Further, the above threshold value differs depending on the type of the lime nitrogen modifier from the relationship with the affinity for the calcium element.

The above-mentioned threshold value can be estimated by a chemical reaction model. The chemical reaction model can be considered as follows. That is, the lime nitrogen fertilizer is analyzed to determine the total calcium content (CaT) therein, and the calcium content (CaB) bound as lime nitrogen calculated from the total nitrogen content is determined. The amount of calcium that is not bound as nitrogen (Ca
F) is calculated.

On the other hand, the modifier of the present invention comprises a group of a compound having a functional group represented by the formula (1), a saccharide and a saccharide having a functional group decomposed (hereinafter referred to as a first group) and an aromatic group. Compounds such as sulfonic acid (hereinafter referred to as a second group) and compounds having an aromatic ring to which a plurality of hydroxyl groups are bonded (hereinafter referred to as a third group) can be classified. Assuming that one functional group, one sulfone group in the latter, and two hydroxyl groups in the third group correspond to one calcium atom which is not in the above-mentioned bonded state as lime nitrogen, CaF
The threshold value is obtained by calculating an amount corresponding to.

However, the above model is a case where the target calcium compound and the modifying agent are considered at the molecular level, and in reality, the target calcium compound acts only on the surface of a solid. Further, the lime nitrogen and the modifier may be mixed unevenly, so that the method obtained by the above calculation is not always accurate and provides only a guideline of the threshold value. The method of experimentally obtaining the value as shown in the examples described later is practical and useful in practical use.

The lower limit of the amount of the modifying agent relative to the lime nitrogen varies depending on the type of the modifying agent used and the amount of the calcium element that is not bound as lime nitrogen in the lime nitrogen. Beyond the threshold
At a blending ratio of 1% by weight or more, the rate of hydrolysis of lime nitrogen can be reduced. Depending on the purpose of use of the fertilizer, it is required that the period of completion of lime nitrogen hydrolysis is different,
The amount of modifier is 0.1% above the threshold for lime nitrogen.
By blending an appropriate amount of not less than% by weight, the rate of hydrolysis of the fertilizer can be controlled and the above requirement can be met.

There is no particular need to determine the upper limit of the amount of the modifier to lime nitrogen. However, the addition of large amounts of modifier results in a reduction of the nitrogen content in the fertilizer. Conventionally, it has been recognized that the nitrogen content in lime nitrogen fertilizers is 19% or more from the viewpoint of quality assurance. If this concept is maintained, the nitrogen content is 25% by weight.
Up to about 24% by weight of the modifier can be added to the lime nitrogen. However, the slower hydrolysis rate due to the addition of the modifier slows the subsequent rate of change from cyanamide to urea, urea to ammonia ions, and further from ammonia ions to nitrate ions. In practical use, the above compounds and ions caused by rainfall and water sprinkling are suppressed, and the effect of increasing the effective nitrogen content per unit soil used by plants as a nitrogen source can be expected. The upper limit of the amount of addition does not need to be limited to the above total nitrogen content, but may be increased depending on the purpose and the type of crop.

When the lime nitrogen composition of the present invention is used for fertilizer, it is generally applied in the form of the lime nitrogen composition of the present invention in which a fertilizer containing lime nitrogen and a modifier are mixed in advance. However, it is also possible to separately apply the fertilizer containing lime nitrogen and the modifier. That is, after the lime nitrogen fertilizer is applied to the soil, and before the elution into the soil is completed, the modifier of the present invention may be applied and brought into contact with the lime nitrogen in the soil to delay the hydrolysis rate. I can do it
The reverse procedure may be used. In addition, a lime nitrogen composition having the same type and amount of the modifying agent can be applied as a fertilizer a plurality of times. Furthermore, a plurality of lime nitrogen compositions having different types and amounts of modifiers are prepared, and a desired slow-release effect suitable for the natural environment, such as the type of crop, the type of soil, or the rainfall in the application area. It can also be applied as a lime nitrogen containing fertilizer having medicinal properties.

It is desired that the lime nitrogen fertilizer be granular because it is less likely to be scattered during operation than when powdered as it is. The lime nitrogen composition containing the lime nitrogen and the modifier of the present invention can be made into a granulated product by adding water and drying. As a liquid used for granulation, an organic solvent can be used. However, water is preferable because the obtained granulated product has excellent hardness and strength, and also in consideration of working environment and cost. The lime nitrogen composition to which water is added is generally kneaded to increase the homogeneity, and if necessary, extruded, embossed, or subjected to a treatment such as granulation using a bread granulator or the like, and then heated, A granulated product can be obtained by drying by means such as blowing.

When granulating a lime nitrogen composition using water, if a large amount of quick lime is contained in the lime nitrogen, a large amount of heat is generated when quick lime hydrates (also called slaking). Then, the granulated product may be powdered and collapsed. Therefore, it is preferable to mix a small amount of water with lime nitrogen in advance to slack off the quick lime in the lime nitrogen.

Further, the present inventors, in the production of a granulated product, use a compound having a functional group represented by the formula (1), a saccharide, or decomposed by the formula (1) as a modifier. When a saccharide having a functional group is used, it has been found that the obtained granulated product can maintain its shape even if immersed in water for a long period of time, and the present invention has been accomplished. Examples of the compound having a functional group represented by the formula (1) include oxycarboxylic acids such as gluconic acid, glucoheptonic acid, tartaric acid, and citric acid and salts thereof. Among them, gluconic acid, glucoheptonic acid, tartaric acid and Are preferred. As the saccharide having the functional group represented by the formula (1) or decomposing to have the functional group represented by the formula (1),
Lactose, glucose, β-cyclodextrin, saccharose, dextran or waste molasses, sugar waste liquid, corn syrup and the like containing these in the components, among them molasses, sugar waste liquid and corn syrup are inexpensive and easily available. Are particularly preferably used.

In addition, the present inventors have found that when a pulp waste liquid containing aromatic sulfonic acid or lignin sulfonic acid is used as a modifier in the preparation of a granulated product, the obtained granulated product can be used for a long time. The present inventors have found that the shape can be maintained even when immersed in water, and the strength is high, leading to the present invention. In particular, pulp waste liquor is preferable because a granulated product having the above-mentioned high strength and excellent shape retention properties over a long period of time can be obtained at low cost.

In producing the granulated lime nitrogen composition of the present invention, a conventionally known method, for example, a method of granulating using urea, and coating the surface of the obtained granulated product with a resin or the like. A method or the like can be applied.

Hereinafter, the present invention will be described in more detail with reference to examples.

[0033]

【Example】

[Examples 1 to 17 and Comparative Examples] (Preparation of sample) Mortar with 0.5 g of various modifiers (when the modifier is in the form of an aqueous solution, 0.5 g in terms of solid content) To be collected. When the modifier is in the form of granules or lump, it is crushed with a pestle and turned into powder. Powdered lime nitrogen sludge (made by Denki Kagaku Kogyo KK; particle size: 0.1 m)
m) 9.5 g is collected in a mortar and crushed and mixed with a modifier using a pestle. Further, kneading is performed while mixing 3 to 5 ml of pure water so as to form a paste. After kneading with a pestle for 5 minutes, an appropriate amount is collected into a syringe and extruded into a rod having a diameter of 2 to 3 mm. Pre-dried at 60 ° C for 20 minutes,
It is cut into pellets having a length of 5 to 7 mm to obtain granules. Furthermore,
After heating at 100 ° C. to evaporate water, the mixture was allowed to cool in a desiccator to obtain a granulated lime nitrogen composition. A lime nitrogen composition granulated product containing no modifier was produced by the same procedure as above and used as a comparative example. The various lime nitrogen composition granules obtained above were subjected to the following hydrolytic evaluation test for 5 days, and the hydrolysis rates were measured. Table 1 shows the results.

<Test Method for Evaluation of Hydrolysis Property>
g Weigh precisely and collect in a 120 ml styrene bottle. 100 ml of pure water is added, the lid is closed, and the operation of inverting the contents is repeated several times to stir the contents. Then, it is left at room temperature for a predetermined period.

<Measurement Method of Hydrolysis Rate> The above aqueous solution was stirred and allowed to stand for a while, then the supernatant water was collected and the amount of nitrogen eluted into the water was determined by the Kjeldahl method to determine the total amount of eluted nitrogen. Further, the total nitrogen content in the granulated product subjected to the hydrolytic evaluation test is calculated from the total nitrogen content and the mixing ratio of the lime nitrogen used for producing the granulated product. From the total amount of dissolved nitrogen and the total amount of nitrogen in the granulated product, the hydrolysis rate is calculated by the following formula. Hydrolysis rate (%) = (total amount of dissolved nitrogen / total amount of nitrogen in granulated product) × 100

[0036]

[Table 1]

Examples 18 to 24 A granulated product was prepared in the same manner as in Examples 1 to 17, except that 0.5 to 8 g of molasses having a solid content of 47% was used as a modifier. The hydrolysis rate after 5 days was measured in the hydrolysis test.
The results are shown in Table 2.

[0038]

[Table 2]

Examples 25 to 31 A granulated product was obtained in the same manner as in Examples 18 to 24 except that sodium gluconate was added in an amount of 0.01 to 2.0% by weight as a modifier. Was evaluated. Table 3 shows the results.

[0040]

[Table 3]

Examples 32-39 As a modifier, molasses having a solid content of 47% was made into 0.3 g (3% by weight as a mixing ratio) and 0.6 g (6% by weight as a mixing ratio), and hydrolyzed. 5 days, 10 days, 20 days, 30 days
Except for the day, granulated products were produced and evaluated under the same conditions as in Examples 18 to 24. Table 4 shows the results.

[0042]

[Table 4]

Examples 40 to 54 (Preparation of Evaluation Samples) Sodium gluconate (N
a) is 1.0, 1.2, 1..
Example 32 except that 6, 1.8 and 5.0% were used.
A granulated product was prepared and evaluated in the same manner as in Examples # 39 to # 39. Table 5 shows the results.

[0044]

[Table 5]

[Examples 55-58] 4% (in terms of solid content) of molasses was added to slaked lime nitrogen, granules were prepared in the same manner as in Examples 1 to 17, and hydrolysis was performed in soil. The properties were measured. The soil used was coarse brown lowland soil. In a 50 ml cylindrical container, 50 g of the soil is weighed, and 90 mg of the finely weighed granules are evenly placed on the soil. In addition, 10g
And water is sprinkled over the soil so that the water content becomes 60%. To prevent evaporation of water, cover with aluminum foil so that it is not sealed, weigh the whole weight,
Leave in a constant temperature bath at ℃. The amount of volatile water is periodically checked by a gravimetric method, and when volatilization is confirmed, water is replenished by the amount of volatile water to make the water content 60%. After elapse of a predetermined period, the soil is transferred to a petri dish, and the soil and granules are uniformly ground, and then transferred to a 500-ml separating funnel, and a 2% acetic acid solution is added to extract cyanamide. After filtration through filter paper, the amount of cyanamide in the filtrate is measured spectrophotometrically using pentacyanoammine ferroate as a coloring reagent.
Table 6 shows the results. As described above, the conventional lime nitrogen loses its medicinal effect in about one week, whereas in the case of this example, cyanamide is detected until about 20 days. It is expected to have a migratory effect and a slower fertilizer effect.

[0046]

[Table 6]

[0047]

According to the present invention, there is provided a lime nitrogen composition in which the rate of hydrolysis of lime nitrogen is directly delayed, and the lime nitrogen composition is directly applied to fertilizers, and It is possible to provide a lime nitrogen fertilizer having an appropriate slow effect. Further, according to the present invention, the hydrolysis rate can be easily controlled by changing the type of the lime nitrogen modifier and the blending ratio of the modifier beyond the threshold value. It is easy to provide lime nitrogen fertilizer with slow effect according to the purpose, and it is possible to freely design the fertilizing period of lime nitrogen fertilizer and the medicinal period peculiar to lime nitrogenous fertilizer. It is extremely useful industrially. Furthermore, since the lime nitrogen composition of the present invention has a characteristic that the medicinal effect period can be adjusted and can be used for a long period of time, conventionally known uses of lime nitrogen, for example, pesticides, deodorants, ripening accelerators It can also be applied to soil conditioner applications and the like.

Claims (13)

[Claims] 1. A lime nitrogen modifier comprising a substance which retards the rate of lime nitrogen hydrolysis. 2. The lime nitrogen modifier according to claim 1, which is a compound having a functional group represented by the formula (1). Embedded image 3. The compound having a functional group represented by the formula (1) is at least one selected from the group consisting of oxycarboxylic acids or salts thereof and ketocarboxylic acids or salts thereof. The lime nitrogen modifier according to claim 2, wherein 4. The lime nitrogen modification according to claim 1, wherein the saccharide is a saccharide having a functional group represented by the formula (1) or decomposed to have a functional group represented by the formula (1). Agent. 5. The lime nitrogen modifier according to claim 4, which is molasses or corn syrup. 6. The lime nitrogen modifier according to claim 1, which is at least one member selected from the group consisting of aromatic sulfonic acid, lignin sulfonic acid, and salts thereof. 7. The lime nitrogen modifier according to claim 6, which is a pulp waste liquid. 8. The lime nitrogen modifier according to claim 1, which is a compound having an aromatic ring to which a plurality of hydroxyl groups are bonded. 9. The lime nitrogen modifier according to claim 8, which is a compound in which a hydroxyl group is bonded to adjacent carbons in an aromatic ring. 10. A lime nitrogen composition comprising lime nitrogen and a modifier. 11. A granulated lime nitrogen composition obtained by adding water to the lime nitrogen composition according to claim 10 and drying. 12. The granulated lime nitrogen composition according to claim 11, wherein the lime nitrogen is slaked from quick lime in the lime nitrogen. 13. A method for controlling a hydrolysis rate of a lime nitrogen composition containing lime nitrogen and a lime nitrogen modifier, the method comprising changing the mixing ratio of the lime nitrogen modifier to lime nitrogen. A method for controlling the rate of hydrolysis of a lime nitrogen composition, comprising controlling the rate of hydrolysis of a nitrogen composition.