JP5315584B2 - Granular fertilizer compound - Google Patents
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- JP5315584B2 JP5315584B2 JP2005122110A JP2005122110A JP5315584B2 JP 5315584 B2 JP5315584 B2 JP 5315584B2 JP 2005122110 A JP2005122110 A JP 2005122110A JP 2005122110 A JP2005122110 A JP 2005122110A JP 5315584 B2 JP5315584 B2 JP 5315584B2
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Abstract
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本発明は、複数種の粒状肥料を配合した粒状肥料配合物に関する。 The present invention relates to a granular fertilizer blend in which a plurality of types of granular fertilizers are blended.
近年、農業就労者の高年齢化、就労者数の減少、兼業農家の増加から、より効率よい作物栽培を目的に各種肥料成分を配合した粒状肥料配合物が提案されている。また、植物の成長にあわせ所定の時期に溶出させるために種々の肥効調整型被覆肥料も開発され、配合されている。例えば、特許文献１には緩行性被覆粒状肥料と非緩行性被覆粒状とを混合してなる被覆粒状配合肥料が記載され、特許文献２には窒素形態且つ供給パターンの異なる種類の粒状肥料からなる配合肥料が記載されている。
このように種々の目的に応じて設計された異なる肥料を配合した配合肥料が利用されているが、適切に配合された配合肥料が製品袋からの排出時や、動力肥料散布機のタンク内にて分離してしまい、実際に水田や畑に散布された際には、配合肥料の割合のムラが生じてしまい、作物の株によってはその成長に差異が生じる恐れがあった。
この為、動力肥料散布機の肥料タンク内に攪拌手段を設けた混合機等が使用されている（特許文献３を参照。）が、機械の構造が複雑になるなどの問題があった。
In recent years, granular fertilizer blends containing various fertilizer components have been proposed for the purpose of more efficient crop cultivation because of the aging of agricultural workers, the decrease in the number of workers, and the increase in part-time farmers. In addition, various fertilizer-adjusted coated fertilizers have been developed and blended for elution at a predetermined time according to the growth of plants. For example,
In this way, mixed fertilizers containing different fertilizers designed for various purposes are used, but properly mixed fertilizers are discharged from the product bag or in the tank of the power fertilizer spreader However, when it was actually sprayed on paddy fields and fields, the proportion of the mixed fertilizer was uneven, and there was a risk that the growth would differ depending on the crop stock.
For this reason, a mixer or the like provided with a stirring means is used in the fertilizer tank of the power fertilizer spreader (see Patent Document 3), but there is a problem that the structure of the machine is complicated.
肥料袋からの排出時や動力肥料散布機のタンク内など、粒状肥料の粒子が移動する過程において、異なる種類の粒状肥料の粒子が分離し難い粒状肥料配合物を提供すること。 To provide a granular fertilizer composition in which particles of different types of granular fertilizer are difficult to separate in the process of movement of granular fertilizer particles, such as when discharged from a fertilizer bag or in the tank of a power fertilizer spreader.
かかる状況下において、本発明者は粒状肥料配合物について鋭意検討を重ねた結果、主として配合された粒状肥料の形状に関する特定の係数が、互いに一定の関係にある粒状肥料を配合した場合に、筒状等の経路を移動する際に異なる種類の粒状肥料が容易に分離することがないことを見出し、本発明を完成するに至った。 Under such circumstances, the present inventor conducted extensive studies on the granular fertilizer blend, and as a result, when the specific coefficient regarding the shape of the blended granular fertilizer is blended with the granular fertilizer having a certain relationship with each other, the cylinder The present inventors have found that different types of granular fertilizers are not easily separated when moving along a path such as a shape, and have completed the present invention.
即ち、本発明は以下の発明を含む。
［発明１］
複数種の粒状肥料を配合してなる粒状肥料配合物であって、
最も多く配合された種の粒状肥料とそれ以外の１０重量％以上配合された種の粒状肥料との組み合わせの全てが下記の関係を有することを特徴とする粒状肥料配合物。
粒状肥料の個々の粒子を平面として取り込んだ画像より、下記式を用いて求められる
形状係数の平均値の比が、０．３〜１．０
形状係数＝１００−（包絡周囲長／周囲長）×１００
［発明２］
最も多く配合された種の粒状肥料とそれ以外の１０重量％以上配合された種の粒状肥料との組み合わせの全てが、更に下記の関係を有することを特徴とする、発明１に記載された粒状肥料配合物。
日本工業規格による流動度試験方法（ＪＩＳ Ｚ ２５０２）に基づいて
オリフィス径12mmφの漏斗状オリフィス管を用いて測定される
粒状肥料の流動度（秒／ｇ）の比が、０．８〜１．３
［発明３］
粒状肥料配合物が、少なくとも１種の被覆粒状肥料を配合してなる粒状肥料配合物であるであることを特徴とする、発明１または２に記載された粒状肥料配合物。
［発明４］
粒状肥料配合物に最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料の候補とを決定する工程（工程イ）、
工程イで決定された、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料の候補との組み合わせが、下記の関係を有するかを判定する工程（工程ロ）、および
工程ロで下記の関係を有すると判定された、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料とを、所定の割合で混合する工程（工程ハ）を有することを特徴とする粒状肥料配合物の製造方法。
粒状肥料の個々の粒子を平面として取り込んだ画像より、下記式を用いて求められる
形状係数の平均値の比が、０．３〜１．０
形状係数＝１００−（包絡周囲長／周囲長）×１００
［発明５］
工程ロが、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料の候補との組み合わせが、更に下記の関係を有するかを判定する工程である、発明４に記載された粒状肥料配合物の製造方法。
日本工業規格による流動度試験方法（ＪＩＳ Ｚ ２５０２）に基づいて
オリフィス径12mmφの漏斗状オリフィス管を用いて測定される
粒状肥料の流動度（秒／ｇ）の比が、０．８〜１．３
［発明６］
粒状肥料配合物に最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料との組み合わせが下記の関係を有するように、粒状肥料の粒子の形状を変化させる処理または粒状肥料の粒子の形状に基づき選別する処理に付する工程（工程ニ）、および
工程ニで粒状肥料の粒子の形状を変化させる処理または粒状肥料の粒子の形状に基づき選別する処理に付された、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料とを、所定の割合で混合する工程（工程ホ）を有することを特徴とする粒状肥料配合物の製造方法。
粒状肥料の個々の粒子を平面として取り込んだ画像より、下記式を用いて求められる
形状係数の比が、０．３〜１．０
形状係数＝１００−（包絡周囲長／周囲長）×１００
［発明７］
工程ニが、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料との組み合わせが、更に下記の関係を有するように、粒状肥料の粒子の形状を変化させる処理または粒状肥料の粒子の形状に基づき選別する処理に付する工程である、発明６に記載された粒状肥料配合物の製造方法。
日本工業規格による流動度試験方法（ＪＩＳ Ｚ ２５０２）に基づいて
オリフィス径12mmφの漏斗状オリフィス管を用いて測定される
粒状肥料の流動度（秒／ｇ）の比が、０．８〜１．３
That is, the present invention includes the following inventions.
[Invention 1]
It is a granular fertilizer blend formed by blending multiple types of granular fertilizer,
A granular fertilizer blend characterized in that all the combinations of the most commonly blended granular fertilizer and the other 10% by weight or more of the blended granular fertilizer have the following relationship.
From the image in which the individual particles of the granular fertilizer are captured as a plane, the ratio of the average value of the shape factor obtained using the following formula is 0.3 to 1.0.
Shape factor = 100− (envelope perimeter / perimeter) × 100
[Invention 2]
Granules described in
The ratio of fluidity (second / g) of granular fertilizer measured using a funnel-shaped orifice tube with an orifice diameter of 12 mmφ based on a flow rate test method (JIS Z 2502) according to Japanese Industrial Standard is 0.8-1. 3
[Invention 3]
The granular fertilizer blend according to
[Invention 4]
A step of determining a granular fertilizer of the seed most often mixed in the granular fertilizer blend and a candidate of the granular fertilizer of the other blended by 10% by weight or more (step a),
The step of determining whether the combination of the most frequently blended granular fertilizer and the other 10% by weight or more of the seeded granular fertilizer candidates determined in step (a) has the following relationship: (B), and the granular fertilizer of the most frequently blended seed that has been determined to have the following relationship in the process (b) and the other granular fertilizer blended by 10% by weight or more are mixed at a predetermined ratio. The manufacturing method of the granular fertilizer compound characterized by having a process (process c).
From the image in which the individual particles of the granular fertilizer are captured as a plane, the ratio of the average value of the shape factor obtained using the following formula is 0.3 to 1.0.
Shape factor = 100− (envelope perimeter / perimeter) × 100
[Invention 5]
The process b is a process for determining whether the combination of the most commonly blended granular fertilizer and the other 10% by weight or more of the blended candidate granular fertilizer further has the following relationship: 4. A method for producing a granular fertilizer composition described in 4.
The ratio of fluidity (second / g) of granular fertilizer measured using a funnel-shaped orifice tube with an orifice diameter of 12 mmφ based on a flow rate test method (JIS Z 2502) according to Japanese Industrial Standard is 0.8-1. 3
[Invention 6]
The shape of the particles of the granular fertilizer is changed so that the combination of the granular fertilizer of the seed most frequently mixed in the granular fertilizer compound and the granular fertilizer of the other seed mixed with 10% by weight or more has the following relationship: It is attached to the process (process D) attached to the process or the process of selecting based on the shape of the granular fertilizer particles, and the process to change the shape of the granular fertilizer particles in the process D or the process of selecting based on the granular fertilizer particle shapes. A granular fertilizer characterized by having a step of mixing the granular fertilizer of the most mixed seed and the granular fertilizer of the other 10% by weight or more in a predetermined ratio (step e) A method for producing a blend.
From the image obtained by capturing individual particles of the granular fertilizer as a plane, the ratio of the shape factor obtained using the following formula is 0.3 to 1.0.
Shape factor = 100− (envelope perimeter / perimeter) × 100
[Invention 7]
Change the shape of the granular fertilizer particles so that the combination of the granular fertilizer with the most blended seeds and the other 10% by weight or more of the blended granular fertilizers has the following relationship: The manufacturing method of the granular fertilizer compound described in invention 6 which is the process attached | subjected to the process to make or the process to classify | select based on the shape of the particle | grains of granular fertilizer.
The ratio of fluidity (second / g) of granular fertilizer measured using a funnel-shaped orifice tube with an orifice diameter of 12 mmφ based on a flow rate test method (JIS Z 2502) according to Japanese Industrial Standard is 0.8-1. 3
本発明の粒状肥料配合物は、肥料袋からの排出や、動力肥料散布機のタンク内等のような筒状の経路において移動する際に、異なる粒状肥料の粒子同士が容易に分離しないので、場所におけるバラツキを少なく、散布することが可能である。 When the granular fertilizer composition of the present invention moves in a cylindrical path such as discharge from a fertilizer bag or in a tank of a power fertilizer spreader, the particles of different granular fertilizers are not easily separated from each other. It is possible to spread with little variation in place.
次に、本発明を詳しく説明する。
本発明において使用され得る粒状肥料は、肥料成分を含有する粒状物である。肥料成分は、水稲などの植物栽培において養分を与えるために土壌に施される窒素、リン、カリウム、珪素、マグネシウム、カルシウム、マンガン、ホウ素、鉄等の種々の元素を含有する成分であり、具体例としては、尿素、硝酸アンモニウム、硝酸苦土アンモニウム、塩化アンモニウム、硫酸アンモニウム、リン酸アンモニウム、硝酸ソーダ、硝酸カルシウム、硝酸カリウム、石灰窒素、ホルムアルデヒド加工尿素肥料（ＵＦ）、アセトアルデヒド加工尿素肥料（ＣＤＵ）、イソブチルアルデヒド加工尿素肥料（ＩＢＤＵ）、グアニール尿素（ＧＵ）等の窒素質肥料；過リン酸石灰、重過リン酸石灰、熔成リン肥、腐植酸リン肥、焼成リン肥、重焼リン、苦土過リン酸、ポリリン酸アンモニウム、メタリン酸カリウム、メタリン酸カルシウム、苦土リン酸、硫リン安、リン硝安カリウム、塩リン安等のリン酸質肥料；塩化カリウム、硫酸カリウム、硫酸カリソーダ、硫酸カリ苦土、重炭酸カリウム、リン酸カリウム等のカリウム質肥料；珪酸カルシウム等の珪酸質肥料；硫酸マグネシウム、塩化マグネシウム等のマグネシウム質肥料；生石灰、消石灰、炭酸カルシウム等のカルシウム質肥料；硫酸マンガン、硫酸苦土マンガン、鉱さいマンガン等のマンガン質肥料；ホウ酸、ホウ酸塩等のホウ素質肥料；鉄鋼スラグ等の含鉄肥料等の肥料取締法に定められる普通肥料（複合肥料を含む）等を挙げることができる。窒素（Ｎ）、リン（Ｐ）およびカリウム（Ｋ）より選ばれる肥料成分の一種以上、特にこれら三種全ての肥料成分を含有する肥料としては、ＮＰＫ成分型（Ｎ−Ｐ２Ｏ５−Ｋ２Ｏ）肥料が挙げられ、かかる肥料としては、例えば、５−５−７（Ｎ−Ｐ２Ｏ５−Ｋ２Ｏの重量比率を意味する。以下同じ。）、１２−１２−１６等の１型平上り型、５−５−５、１４−１４−１４等の２型水平型、６−６−５、８−８−５等の３型平下がり型、４−７−９、６−８−１１等の４型上り型、４−７−７、１０−２０−２０等の５型上り平型、４−７−４、６−９−６等の６型山型、６−４−５、１４−１０−１３等の７型谷型、６−５−５、１８−１１−１１等の８型下がり平型、７−６−５、１４−１２−９等の９型下がり型、３−２０−０、１８−３５−０等の１０型ＮＰ型、１６−０−１２、１８−０−１６等の１１型ＮＫ型、０−３−１４、０−１５−１５等の１２型ＰＫ型等を挙げることができる。
Next, the present invention will be described in detail.
The granular fertilizer that can be used in the present invention is a granular material containing a fertilizer component. A fertilizer component is a component containing various elements such as nitrogen, phosphorus, potassium, silicon, magnesium, calcium, manganese, boron, and iron, which are applied to soil in order to provide nutrients in plant cultivation such as paddy rice. Examples include urea, ammonium nitrate, ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium phosphate, sodium nitrate, calcium nitrate, potassium nitrate, lime nitrogen, formaldehyde processed urea fertilizer (UF), acetaldehyde processed urea fertilizer (CDU), isobutyl Nitrogenous fertilizers such as aldehyde-processed urea fertilizer (IBDU) and guaneaure urea (GU); superphosphate lime, heavy superphosphate lime, molten phosphorus fertilizer, humic acid phosphorus fertilizer, calcined phosphorus fertilizer, heavy calcined phosphorus, bitter soil Superphosphoric acid, ammonium polyphosphate, potassium metaphosphate, calcium phosphate Phosphoric fertilizers such as phosphoric acid, phosphoric acid ammonium phosphate, potassium ammonium phosphate, ammonium phosphate phosphate; potassium fertilizers such as potassium chloride, potassium sulfate, potassium sulfate, potassium sulfate clay, potassium bicarbonate, potassium phosphate Silicic fertilizers such as calcium silicate; Magnesium fertilizers such as magnesium sulfate and magnesium chloride; Calcium fertilizers such as quick lime, slaked lime and calcium carbonate; And borate fertilizers such as borate; ordinary fertilizers (including complex fertilizers) defined in the Fertilizer Control Law such as iron-containing fertilizers such as steel slag. One or more types of fertilizer components selected from nitrogen (N), phosphorus (P) and potassium (K), in particular, fertilizers containing all three types of fertilizer components include NPK component type (N-P2O5-K2O) fertilizers. Examples of such fertilizers include 5-5-7 (meaning the weight ratio of N-P2O5-K2O; the same applies hereinafter), 12-12-16, etc. , 14-14-14 etc. 2 type horizontal type, 6-6-5, 8-8-5 etc. type 3 flat down type, 4-7-9, 6-8-11 etc. 4 type up type, 5-7 ascending flat type such as 4-7-7, 10-20-20, 6-type mountain type such as 4-7-4, 6-9-6, 6-4-5, 14-10-13, etc. 7 type valley type, 6 type 5-5, 18-11-11 grade 8 flat type, 7-6-5, 14-12-9 grade 9 type, 3-20-0, 1 -10 type NP type such as -35-0, 11 type NK type such as 16-0-12, 18-0-16, 12 type PK type such as 0-3-14, 0-15-15, etc. Can do.
また、粒状肥料は除草剤、殺虫剤等の農薬成分を含有することができる。該農薬成分は、例えば粒状肥料表面に付着した状態、あるいは粒状肥料内部または全体に分散した状態で存在し得る。農薬成分を含有する粒状肥料は、例えば含有せしめる農薬成分の水、有機溶剤等の溶液、あるいは界面活性剤等がさらに添加されたエマルジョン液を、粒状肥料の粒子表面に散布し、粒子内部に浸透させ、同時、またはその後に溶媒を蒸散等により除去することによって製造できる。 The granular fertilizer can contain agrochemical components such as herbicides and insecticides. The agrochemical component can be present, for example, in a state of adhering to the surface of the granular fertilizer, or in a state dispersed inside or throughout the granular fertilizer. Particulate fertilizers containing agrochemical ingredients are, for example, sprayed on the surface of granular fertilizer particles with a solution of agrochemical ingredients to be added, such as water, organic solvents, or surfactants, and penetrated inside the particles. At the same time or thereafter, the solvent can be removed by evaporation or the like.
粒状肥料は、肥料を必須成分とする原料を造粒することにより得ることができる。造粒法としては、転動造粒法、押出し造粒法、圧縮造粒法、破砕造粒法、噴流造粒法等、公知の造粒法のいずれを用いてもよいが、これらの造粒法により得られる肥料の形状においては、針状、燐片状（フレーク状）のように、物理的な強度の不足した形状の固形肥料は除かれる。即ち、本発明における粒状肥料とは、塊状の肥料を意味し、具体的には塊における最大幅と、最小幅の比が０．２以上である粒状肥料を意味する。
粒状肥料の粒子径は、製造上の観点等から、通常、重量平均粒子径として、０．５〜１０ｍｍ、好ましくは１〜５ｍｍである。
A granular fertilizer can be obtained by granulating the raw material which uses a fertilizer as an essential component. As the granulation method, any of known granulation methods such as rolling granulation method, extrusion granulation method, compression granulation method, crush granulation method, jet granulation method, etc. may be used. In the form of fertilizer obtained by the grain method, solid fertilizer having a shape with insufficient physical strength, such as needle-like or flake-like (flakes), is excluded. That is, the granular fertilizer in the present invention means a massive fertilizer, and specifically means a granular fertilizer in which the ratio of the maximum width to the minimum width in the lump is 0.2 or more.
The particle diameter of the granular fertilizer is usually 0.5 to 10 mm, preferably 1 to 5 mm as the weight average particle diameter from the viewpoint of production.
本発明における粒状肥料は、肥料成分を含有する粒状物が樹脂にて被覆された被覆粒状肥料であってもよい。該被覆における樹脂としては、例えば、ワックス、水溶性高分子、熱可塑性樹脂、熱硬化性樹脂等が挙げられる。
ワックスとしては、例えば、カーボワックス、ヘキストロウ、蔗糖エステル、脂肪酸エステルなどの合成ワックス、カルナウバワックス、ミツロウ、木ロウなどの天然ワックス、パラフィンワックス、ペトロラクタムなどの石油ワックス等が挙げられる。熱可塑性樹脂としては、例えば、ポリエチレン、ポリプロピレン、ポリブテン、ポリスチレンなどのポリオレフィン、ポリ酢酸ビニル、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリアクリル酸、ポリメタアクリル酸、ポリアクリル酸エステル、ポリメタクリル酸エステルなどのビニル重合物、ブタジエン重合物、イソプレン重合物、クロロプレン重合物、ブタジエン−スチレン共重合物、エチレン−プロピレン−ジエン共重合物、スチレン−イソプレン共重合物などのジエン系重合物、エチレン−プロピレン共重合物、ブテン−エチレン共重合物、ブテン−プロピレン共重合物、エチレン−酢酸ビニル共重合物、エチレン−アクリル酸共重合物、エチレン−メタアクリル酸共重合物、エチレン−メタアクリル酸エステル共重合物、エチレン−一酸化炭素共重合物、エチレン−酢酸ビニル−一酸化炭素共重合物などのポリオレフィン共重合物、塩化ビニル−ビニルアセテート共重合物、塩化ビニリデン−塩化ビニル共重合物などの塩化ビニル共重合物等が挙げられる。熱硬化性樹脂としては、例えば、ウレタン樹脂、エポキシ樹脂、アルキド樹脂、不飽和ポリエステル樹脂、フェノール樹脂、ウレア・メラミン樹脂、尿素樹脂、シリコン樹脂等が挙げられる。
The granular fertilizer in the present invention may be a coated granular fertilizer in which a granular material containing a fertilizer component is coated with a resin. Examples of the resin in the coating include wax, a water-soluble polymer, a thermoplastic resin, and a thermosetting resin.
Examples of the wax include synthetic waxes such as carbo wax, Hoechst wax, sucrose ester, and fatty acid ester, natural waxes such as carnauba wax, beeswax, and wood wax, and petroleum waxes such as paraffin wax and petrolactam. Examples of thermoplastic resins include polyolefins such as polyethylene, polypropylene, polybutene, and polystyrene, polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyacrylic acid, polymethacrylic acid, polyacrylic acid ester, and polymethacrylic acid ester. Vinyl polymers, butadiene polymers, isoprene polymers, chloroprene polymers, butadiene-styrene copolymers, ethylene-propylene-diene copolymers, diene polymers such as styrene-isoprene copolymers, ethylene-propylene copolymers Polymer, butene-ethylene copolymer, butene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-methacrylic acid copolymer, ethylene-methacrylic acid ester copolymer , Ethylene Carbon oxide copolymer, polyolefin copolymer such as ethylene-vinyl acetate-carbon monoxide copolymer, vinyl chloride copolymer such as vinyl chloride-vinyl acetate copolymer, vinylidene chloride-vinyl chloride copolymer, etc. Can be mentioned. Examples of the thermosetting resin include urethane resin, epoxy resin, alkyd resin, unsaturated polyester resin, phenol resin, urea / melamine resin, urea resin, and silicon resin.
本発明において、異なる種の粒状肥料とは、イ）粒状肥料に含有されるいずれかひとつの肥料成分の種類が異なる、ロ）粒状肥料に含有されるいずれかひとつの肥料成分の含有率が実質的に異なる（例えば、含有率が１．５倍以上異なる）、ハ）粒状肥料における被覆の有無が異なる、ニ）被覆粒状肥料における被覆の種類が異なる、ホ）粒状肥料の粒径が実質的に異なる（例えば、粒径が２倍以上異なる）、または、ヘ）粒状肥料の形状が実質的に異なることを意味する。 In the present invention, different types of granular fertilizers are a) the type of any one fertilizer component contained in the granular fertilizer is different; b) the content rate of any one fertilizer component contained in the granular fertilizer is substantially (E.g., the content is different by 1.5 times or more), (c) the presence or absence of coating on the granular fertilizer is different, (d) the type of coating on the coated granular fertilizer is different, and (e) the particle size of the granular fertilizer is substantially (For example, the particle size is different by 2 times or more), or f) the shape of the granular fertilizer is substantially different.
本発明における粒状肥料配合物は、粒状肥料配合物に主として配合された粒状肥料の関係において、具体的には、粒状肥料配合物の全体に対して最も多く配合された種の粒状肥料とそれ以外の１０重量％以上配合された種の粒状肥料との組み合わせ、より好ましくは、最も多く配合された種の粒状肥料とそれ以外の５重量％以上配合された種の粒状肥料との組み合わせの全てが、下記の形状係数の平均値に関する関係を有する粒状肥料配合物であり、さらに好ましくは、該粒状肥料の組み合わせの全てが、更に下記の流動度に関する関係を有する粒状肥料配合物である。 The granular fertilizer blend in the present invention is mainly related to the granular fertilizer blended in the granular fertilizer blend. Specifically, the granular fertilizer blended most with respect to the whole of the granular fertilizer blend and the others. More preferably, all of the combinations of the granular fertilizer with more than 10% by weight of the blended seed, more preferably the granular fertilizer with the most blended seed and the other of the granular fertilizer with more than 5% by weight of the seed The granular fertilizer blend having a relationship regarding the average value of the following shape factors, and more preferably, all of the combinations of the granular fertilizers are further the granular fertilizer blend having the relationship regarding the following fluidity.
まず、本発明における粒状肥料の形状係数について、以下に説明する。本発明における粒状肥料の形状係数は、下記に示す方法により測定される。
粒状肥料の粒子を板硝子面等の滑らかな平面上に置く。該平面に対して垂直方向から、該粒子の各々の平面として画像を取得する。次に平面画像として取り込んだ粒子の輪郭における、周囲長と包絡周囲長を市販の画像解析装置等を用いて測定して、下記の式に従い、形状係数を計算する。
形状係数＝（１−包絡周囲長／周囲長）×１００
例えば図１に示した粒子の輪郭においては、「包絡周囲長」とは破線で示したようにその凸部を最短の距離をもって結んだときの周囲の長さを意味し、「周囲長」とは実線で表わされた輪郭そのものの長さを意味する。因みに、包絡周囲長と周囲長より算出される該形状係数は、一般に「収縮率」と呼称される形状係数である。
実際には、該形状係数を統計的に有意な数の粒状肥料の粒子について取得し、これの平均値を計算する。具体的には２０〜１００粒の粒状肥料の粒子を用いて、各々の形状係数の平均値を算出する。
First, the shape factor of the granular fertilizer in the present invention will be described below. The shape factor of the granular fertilizer in the present invention is measured by the method shown below.
The granular fertilizer particles are placed on a smooth surface such as a plate glass surface. Images are acquired as each plane of the particles from a direction perpendicular to the plane. Next, the perimeter and envelope perimeter of the contour of the particles captured as a planar image are measured using a commercially available image analyzer or the like, and the shape factor is calculated according to the following equation.
Shape factor = (1-envelope perimeter / perimeter) × 100
For example, in the particle outline shown in FIG. 1, “envelope perimeter” means the perimeter when the convex portions are connected with the shortest distance as shown by the broken line, and “perimeter” Means the length of the contour itself represented by a solid line. Incidentally, the shape factor calculated from the envelope perimeter and the perimeter is a shape factor generally referred to as “shrinkage rate”.
In practice, the shape factor is obtained for a statistically significant number of granular fertilizer particles and the average value is calculated. Specifically, an average value of each shape factor is calculated using 20 to 100 granular fertilizer particles.
本発明における上記の式で求められる形状係数は、具体的には、ＣＣＤカメラ等を用いて取り込んだ粒状肥料の平面画像を、ＷｉｎＲＯＯＦ(三谷商事製)等の画像解析処理装置を使いて、測定することができる。 Specifically, the shape factor obtained by the above formula in the present invention is measured using a plane image of granular fertilizer captured using a CCD camera or the like, using an image analysis processing device such as WinROOF (manufactured by Mitani Corporation). can do.
上記の方法により、粒状肥料配合物に最も多く配合された種の粒状肥料およびそれ以外の１０重量％以上配合された種の粒状肥料について、各々の粒子の形状係数を測定する。
次に、最も多く配合された種の粒状肥料と、それ以外の１０重量％以上配合された種の粒状肥料との組み合わせにおいて、形状係数の大きい粒状肥料を「粒状肥料Ａ」とし、もう一方を「粒状肥料Ｂ」とする。粒状肥料Ａの形状係数に対する、粒状肥料Ｂの形状係数の比を求める。本発明の粒状肥料配合物は、この形状係数の比が０．３〜１．０、好ましくは０．４〜１．０である。
粒状肥料配合物にそれ以外の１０重量％以上配合された種の粒状肥料が２種以上ある場合は、最も多く配合された種の粒状肥料と、それ以外の２種以上の１０重量％以上配合された種の粒状肥料との組み合わせにおいても、同様の形状係数の比を求める。
According to the above method, the shape factor of each particle is measured for the granular fertilizer of the seed most blended in the granular fertilizer blend and the granular fertilizer of the seed blended by 10% by weight or more.
Next, in the combination of the most commonly blended granular fertilizer and the other 10% by weight or more of the blended granular fertilizer, the granular fertilizer with a large shape factor is referred to as “granular fertilizer A”, and the other Let it be "granular fertilizer B". The ratio of the shape factor of the granular fertilizer B to the shape factor of the granular fertilizer A is obtained. In the granular fertilizer composition of the present invention, the ratio of the shape factor is 0.3 to 1.0, preferably 0.4 to 1.0.
When there are two or more types of granular fertilizers mixed with 10% by weight or more of the granular fertilizer compound, the most common type of granular fertilizer and other two or more types of 10% by weight or more The same shape factor ratio is also determined in combination with the granular fertilizer of the seeds.
本発明において、最も多く配合された種の粒状肥料とそれ以外の１０重量％以上配合された種の粒状肥料との組み合わせは、更に粒状肥料の流動性が下記の関係を有していることが好ましい。
本発明における粒状肥料の流動性は、下記に示すように、日本工業規格による流動度測定方法に基づいた方法により測定される。
まず、図２に示す、オリフィス管部の口径12mmφ、長さ55mm、漏斗状部の上端部の口径75mmφ、長さ50mmである、漏斗状オリフィス管を用意し、該オリフィス管が垂直となるように固定する。予め量り取っておいた粒状肥料５０ｇを、該オリフィス管の漏斗状部へ投入して、下端から落下しはじめた時点をスタート時として、全量がオリフィス管から出るまでの時間を測定して、単位重量あたりの粒子の落下時間を流動度（秒／ｇ）として算出する。１種類の粒状肥料について、３度の測定を行い、その平均値を算出し、その粒状肥料における流動度とする。
In the present invention, the combination of the most commonly blended granular fertilizer and the other 10% by weight or more of the blended granular fertilizer is such that the fluidity of the granular fertilizer has the following relationship: preferable.
The fluidity of the granular fertilizer in the present invention is measured by a method based on a fluidity measurement method according to Japanese Industrial Standards as shown below.
First, a funnel-shaped orifice tube having a diameter of 12 mmφ and a length of 55 mm of the orifice tube portion, a diameter of 75 mmφ and a length of 50 mm of the upper end portion of the funnel-shaped portion shown in FIG. 2 is prepared so that the orifice tube is vertical. To fix. The amount of granular fertilizer weighed in advance was put into the funnel-shaped portion of the orifice tube, and the time until the whole amount came out of the orifice tube was measured starting from the time when it started to fall from the lower end. The drop time of the particles per weight is calculated as the fluidity (second / g). One type of granular fertilizer is measured three times, the average value is calculated, and the fluidity in the granular fertilizer is obtained.
本発明の粒状肥料配合物は、形状係数に基づいて定めた“粒状肥料Ａ”および“粒状肥料Ｂ”について、粒状肥料Ａの流動度に対する、粒状肥料Ｂの流動度の比が好ましくは０．８〜１．３、更に好ましくは０．９〜１．２である。 In the granular fertilizer composition of the present invention, the ratio of the flow rate of the granular fertilizer B to the flow rate of the granular fertilizer A is preferably about 0.00 for “particulate fertilizer A” and “particulate fertilizer B” determined based on the shape factor. It is 8-1.3, More preferably, it is 0.9-1.2.
本発明の粒状肥料配合物は、例えば、最も多く配合された粒状肥料と１０重量％以上配合された他の粒状肥料との比重差が０．１〜０．４ｇ／ｃｍ3程度あったとしても、混合された粒状肥料同士が容易に分離することがないので、攪拌手段を有しない動力肥料散布機のタンク内においても、分離することなく、均一に粒状肥料配合物を散布することが可能である。 The granular fertilizer blend of the present invention may have a specific gravity difference of about 0.1 to 0.4 g / cm 3 between, for example, the most blended granular fertilizer and other granular fertilizers blended by 10% by weight or more. Because the mixed granular fertilizers are not easily separated from each other, even in the tank of a power fertilizer spreader that does not have a stirring means, it is possible to uniformly disperse the granular fertilizer compound without separation. is there.
粒状肥料の製造においては、その肥料成分の種類や量が同一であっても、造粒方法や造粒条件等が異なると、得られる粒状肥料の粒径分布や形状が変化する場合がある。この場合には、同一種類の粒状肥料においても、造粒方法、造粒条件、更には保存条件が変化した製品毎に、上記の形状係数や流動度を測定しておき、実際に粒状肥料配合物を製造する際に、形状係数や流動度の比が特定の範囲となるような粒状肥料を組み合わせて配合することにより、本発明の分離し難い本発明の粒状肥料配合物を製造することができる。
具体的には、粒状肥料配合物に最も多く配合される種の粒状肥料を決定し、更に粒状肥料配合物に１０重量％以上配合するそれ以外の粒状肥料の候補を決定する。それ以外の１０重量％以上配合する粒状肥料が複数の種類ある場合には、その粒状肥料についての候補も決定する。次に、粒状肥料配合物に最も多く配合させる種の粒状肥料およびそれ以外の１０重量％以上配合する種の粒状肥料の候補について、上記ような粒状肥料の形状係数、好ましくは更に流動度を測定する。そして、最も多く配合させる種の粒状肥料とそれ以外の１０重量％以上配合する種の粒状肥料の候補との組み合わせにおいて、粒状肥料の形状係数の比、好ましくは更に流動度の比を計算し、その組み合わせが分離し難い粒状肥料の組み合わせであるかを判定する。次いで、分離し難い粒状肥料の組み合わせから選ばれた粒状肥料を所定の割合で混合することにより、本発明の粒状肥料配合物を製造することができる。
In the production of granular fertilizer, even if the types and amounts of the fertilizer components are the same, the particle size distribution and shape of the obtained granular fertilizer may change if the granulation method, granulation conditions, and the like are different. In this case, even with the same type of granular fertilizer, measure the shape factor and fluidity for each product whose granulation method, granulation conditions, and storage conditions have changed, and actually add the granular fertilizer. When producing a product, it is possible to produce the granular fertilizer composition of the present invention that is difficult to separate by blending granular fertilizers in which the ratio of shape factor and fluidity falls within a specific range. it can.
Specifically, the granular fertilizer of the kind most blended in the granular fertilizer blend is determined, and further candidates for the other granular fertilizer blended in the granular fertilizer blend by 10% by weight or more are determined. When there are a plurality of other types of granular fertilizer to be blended at 10% by weight or more, candidates for the granular fertilizer are also determined. Next, the shape factor of the granular fertilizer as described above, preferably further the fluidity is measured for the granular fertilizer of the seed to be blended most in the granular fertilizer blend and the other candidate of the granular fertilizer to be blended by 10% by weight or more. To do. And in the combination of the granular fertilizer of the seed to be blended most and the other candidate of the granular fertilizer to be blended by 10% by weight or more, the ratio of the shape factor of the granular fertilizer, preferably the ratio of the fluidity is calculated, It is determined whether the combination is a combination of granular fertilizers that are difficult to separate. Subsequently, the granular fertilizer compound of this invention can be manufactured by mixing the granular fertilizer selected from the combination of the granular fertilizer which is hard to isolate | separate in a predetermined ratio.
また、粒状肥料における上記の形状係数や流動度は、粒状肥料に対して、粒子の形状を変化させる処理、または粒子の形状に基づき選別する処理を行うことにより、その形状係数や流動度を変化させることができる。粒子の形状を変化させる処理としては、例えば整粒機を用いた粒子の角取り処理が挙げられ、粒子の形状に基づき選別する処理としては、篩を用いた粒径による粒子を選別する処理、転選機を用いた転がり度合いより粒子を選別する処理が挙げられる。角取り処理を行うことにより、上記の形状係数が小さな粒状肥料とすることができる。転がり度合いによる選別にて、転がり易い粒状肥料を集めると、上記の形状係数が小さな粒状肥料を得ることができる。このような処理に付することにより、最も多く配合される種の粒状肥料およびそれ以外の１０重量％以上配合する種の粒状肥料との組み合わせにおいて、形状係数や流動度の比が特定の範囲とすることができ、本発明の分離し難い粒状肥料配合物を製造することができる。
具体的には、設計された粒状肥料配合物において、最も多く含有させる種の粒状肥料と、それ以外の１０重量％以上配合する種の粒状肥料との組み合わせにおける、形状係数が上記の関係を有するように、好ましくは更に流動度が上記の関係を有するように、粒子の形状を変化させる処理、または粒子の形状に基づき選別する処理を行う。その後、前記処理に付した粒状肥料を所定の割合で混合することにより、本発明の粒状肥料配合物を製造することができる。
In addition, the shape factor and fluidity of the granular fertilizer can be changed by performing a process for changing the shape of the particles or a process for selecting based on the shape of the particles for the granular fertilizer. Can be made. Examples of the process for changing the shape of the particles include a chamfering process for particles using a particle sizer, and the process for selecting based on the shape of the particles includes a process for selecting particles based on the particle diameter using a sieve, The process which classify | selects particle | grains from the rolling degree using a selection machine is mentioned. By performing the chamfering process, a granular fertilizer having a small shape factor can be obtained. When granular fertilizers that are easy to roll are collected by sorting based on the degree of rolling, granular fertilizers having a small shape factor can be obtained. By applying such treatment, the combination of the most frequently blended granular fertilizer and the other 10% by weight or more of the blended granular fertilizer, the ratio of shape factor and fluidity is within a specific range. It is possible to produce a granular fertilizer composition that is difficult to separate according to the present invention.
Specifically, in the designed granular fertilizer blend, the shape factor in the combination of the most granular fertilizer to be contained and the other granular fertilizer to be blended by 10% by weight or more has the above relationship. Thus, preferably, a process for changing the shape of the particles or a process for selecting based on the shape of the particles is performed so that the fluidity has the above relationship. Then, the granular fertilizer compound of this invention can be manufactured by mixing the granular fertilizer attached | subjected to the said process in a predetermined ratio.
本発明の粒状肥料配合物は、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料との組み合わせが、上記したような特定の形状係数の関係を、好ましくは更に特定の流動度の関係をも有している、複数種の粒状肥料の混合物であるが、粒状肥料の混合割合は特に限定されない。粒状肥料配合物が、例えば２種の粒状肥料の配合物である場合、最も多く配合される粒状肥料の割合は粒状肥料配合物の全体に対して９０〜５０重量％の割合であり、３種の粒状肥料の配合物である場合、最も多く配合される粒状肥料の割合は粒状肥料配合物の全体に対して８５〜３５重量％の割合である。
例えば粒状肥料配合物が、４０重量％の粒状肥料ａ、４０重量％の粒状肥料ｂおよび２０重量％の粒状肥料ｃの配合物である場合、粒状肥料ａまたは粒状肥料ｂのどちらか一方を最も多く配合された種の粒状肥料として、粒状肥料ａと粒状肥料ｂとの組み合わせ及び粒状肥料ａと粒状肥料ｃとの組み合わせが上記関係を有するか、あるいは、粒状肥料ｂと粒状肥料ａとの組み合わせ及び粒状肥料ｂと粒状肥料ｃとの組み合わせが上記関係を有する場合に、本発明の粒状肥料配合物であるものとする。
In the granular fertilizer blend of the present invention, the combination of the most commonly blended granular fertilizer and the other 10% by weight or more of the blended granular fertilizer has a specific shape factor relationship as described above. Preferably, it is a mixture of a plurality of types of granular fertilizers having a specific fluidity relationship, but the mixing ratio of the granular fertilizers is not particularly limited. When the granular fertilizer blend is, for example, a blend of two kinds of granular fertilizers, the ratio of the most frequently blended granular fertilizer is 90 to 50% by weight with respect to the whole granular fertilizer blend, and three kinds In the case of a granular fertilizer blend, the ratio of the most frequently blended granular fertilizer is 85 to 35% by weight based on the whole granular fertilizer blend.
For example, when the granular fertilizer blend is a blend of 40 wt% granular fertilizer a, 40 wt% granular fertilizer b and 20 wt% granular fertilizer c, either granular fertilizer a or granular fertilizer b is the most. The combination of granular fertilizer a and granular fertilizer b and the combination of granular fertilizer a and granular fertilizer c have the above-mentioned relationship, or a combination of granular fertilizer b and granular fertilizer a. And when the combination of the granular fertilizer b and the granular fertilizer c has the said relationship, it shall be the granular fertilizer compound of this invention.
本発明の粒状肥料配合物は、所定割合の複数種の粒状肥料を公知の混合機を用いて均一混合することにより、製造することができる。本発明の粒状肥料配合物の製造に用いることのできる混合機としては、実開昭５３−９０２７４号公報、特開２００１−１７８４７等に記載の重力落下式混合機や、Ｖ型混合機、二重円錐混合機、リボン型混合機等の動力式混合機を挙げることができる。また、製造する粒状肥料配合物の量が少量である場合は、所定の割合の複数種の粒状肥料等を、袋または小型容器に入れて、振り混ぜるような簡易な方法により、製造することも可能である。 The granular fertilizer blend of the present invention can be produced by uniformly mixing a plurality of types of granular fertilizers at a predetermined ratio using a known mixer. Examples of the mixer that can be used for the production of the granular fertilizer composition of the present invention include a gravity drop mixer described in Japanese Utility Model Laid-Open No. 53-90274, Japanese Patent Laid-Open No. 2001-17847, a V-type mixer, two Examples thereof include a power mixer such as a heavy cone mixer and a ribbon mixer. In addition, when the amount of the granular fertilizer compound to be manufactured is small, it can be manufactured by a simple method such as putting a plurality of kinds of granular fertilizers in a predetermined ratio into a bag or a small container and shaking them. Is possible.
本発明の粒状肥料配合物は、一般的な粒状肥料の包装形態に包装される。一般的な包装形態における包装材としては、クラフト袋、ポリエチレン袋、ポリエチレン内装アルミニウム袋、紙袋、ポリエチレン内装紙袋が挙げられる。 The granular fertilizer composition of the present invention is packaged in a general granular fertilizer packaging form. Examples of the packaging material in a general packaging form include kraft bags, polyethylene bags, polyethylene-incorporated aluminum bags, paper bags, and polyethylene-incorporated paper bags.
以下、実施例により本発明をさらに具体的に説明するが、本発明はこれらに限定されるものではない。
参考例
５種類の粒状肥料(イ)〜（ホ）について、本発明の方法により、その形状係数および流動度を測定した。更に、重量平均粒径、密度を測定した。結果を、表１に示す。
EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited thereto.
Reference Example Five types of granular fertilizers (A) to (E) were measured for their shape factor and fluidity by the method of the present invention. Furthermore, the weight average particle diameter and density were measured. The results are shown in Table 1.
*2：りん酸肥料（Ｐ2Ｏ5＝４５％）
*3：粒状化成肥料（Ｎ−Ｐ2Ｏ5−Ｋ2Ｏ＝１４％−２％−１７％）
*4：被覆粒状肥料（Ｎ＝４２％、ウレタン樹脂コート率＝７％）
*5：粒状尿素肥料（Ｎ＝４６％）
* 2: Phosphate fertilizer (P 2 O 5 = 45%)
* 3: granular compound fertilizer (N-P 2 O 5 -K 2 O = 14% -2% -17%)
* 4: Coated granular fertilizer (N = 42%, urethane resin coating rate = 7%)
* 5: Granular urea fertilizer (N = 46%)
尚、表１に記載の粒状肥料の比重は、農薬公定検査法に準じて測定した。即ち、内径50mm、100ml容の金属製容器に、容器上縁１０ｃｍの高さから測定する粒状肥料を自然落下させて、容器内につめる。その後、ただちにスライドガラスを用いて余剰の粒状肥料をすり切りし、容器内の内容物の重量を測定し、見かけ比重（g/cm3）を求める。 In addition, the specific gravity of the granular fertilizer described in Table 1 was measured according to the official agricultural chemical inspection method. That is, the granular fertilizer measured from the height of 10 cm of the upper edge of the container is naturally dropped into a metal container having an inner diameter of 50 mm and a capacity of 100 ml, and is put in the container. Immediately thereafter, the excess granular fertilizer is ground using a slide glass, the weight of the contents in the container is measured, and the apparent specific gravity (g / cm 3 ) is obtained.
製造例１
１Ｌのポリエチレン袋に、粒状肥料(ハ)を５０ｇ、ついで粒状肥料（ニ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
製造例２
１Ｌのポリエチレン袋に、粒状肥料(ニ)を５０ｇ、ついで粒状肥料（ホ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
比較例１
１Ｌのポリエチレン袋に、粒状肥料(イ)を５０ｇ、ついで粒状肥料（ニ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
比較例２
１Ｌのポリエチレン袋に、粒状肥料(ロ)を５０ｇ、ついで粒状肥料（ニ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
Production Example 1
Weigh 50g of granular fertilizer (C) and then 50g of granular fertilizer (D) into a 1L polyethylene bag, seal the mouth of the polyethylene bag and shake with both hands for 30 seconds to prepare a granular fertilizer compound did.
Production Example 2
Weigh 50 g of granular fertilizer (d) and 50 g of granular fertilizer (e) into a 1 L polyethylene bag, seal the mouth of the polyethylene bag and shake it with both hands for 30 seconds to prepare a granular fertilizer compound did.
Comparative Example 1
Weigh 50g of granular fertilizer (I) and then 50g of granular fertilizer (D) into a 1L polyethylene bag, seal the mouth of the polyethylene bag and shake with both hands for 30 seconds to prepare a granular fertilizer compound did.
Comparative Example 2
In a 1L polyethylene bag, weigh 50g of granular fertilizer (b) and then 50g of granular fertilizer (d), seal the mouth of the polyethylene bag and shake and shake for 30 seconds with both hands to prepare a granular fertilizer compound did.
試験例１
製造例１、製造例２、比較例１及び比較例２で得られた粒状肥料配合物について、異なる粒状肥料の分離のし易さについて、下記の方法により測定した。
図２に示す漏斗状オリフィス管を、紙製のウエスを敷いた床面と、下端との間隔が５ｃｍとなるように垂直に固定した。この漏斗状オリフィス管に、粒状肥料配合物１００ｇを投入し、床面に形成された略円錐形形状の粒状肥料配合物の堆積物について、中央部と周辺部における肥料粒子の分布を目視にて観察した。その結果、２種類の肥料粒子の分布状態を、下記の評価基準にて評価した。
評価基準
分離がまったく認められない ○
２種類の粒子が少し分離している △
完全に２種類の粒子が分離している ×
結果を、表２に示す。
Test example 1
About the granular fertilizer compound obtained in Production Example 1, Production Example 2, Comparative Example 1 and Comparative Example 2, the ease of separating different granular fertilizers was measured by the following method.
The funnel-shaped orifice tube shown in FIG. 2 was fixed vertically so that the distance between the floor surface on which paper waste was laid and the lower end was 5 cm. 100 g of granular fertilizer composition is put into this funnel-shaped orifice tube, and the distribution of fertilizer particles in the central part and the peripheral part is visually observed with respect to the deposit of the substantially conical granular fertilizer composition formed on the floor surface. Observed. As a result, the distribution state of the two types of fertilizer particles was evaluated according to the following evaluation criteria.
Evaluation criteria Separation is not allowed at all ○
Two types of particles are slightly separated △
Two types of particles are completely separated ×
The results are shown in Table 2.
製造例３
１Ｌのポリエチレン袋に、粒状肥料(イ)を５０ｇ、ついで粒状肥料（ロ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
製造例４
１Ｌのポリエチレン袋に、粒状肥料(ハ)を５０ｇ、ついで粒状肥料（ホ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
比較例３
１Ｌのポリエチレン袋に、粒状肥料(イ)を５０ｇ、ついで粒状肥料（ハ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
比較例４
１Ｌのポリエチレン袋に、粒状肥料(イ)を５０ｇ、ついで粒状肥料（ホ）を５０ｇ秤量して入れ、該ポリエチレン袋の口を密封して両手で30秒間振り混ぜて、粒状肥料配合物を調製した。
Production Example 3
Weigh 50 g of granular fertilizer (I) and then 50 g of granular fertilizer (B) into a 1 L polyethylene bag, seal the mouth of the polyethylene bag and shake and shake for 30 seconds with both hands to prepare a granular fertilizer composition did.
Production Example 4
Weigh 50g of granular fertilizer (C) and then 50g of granular fertilizer (E) into a 1L polyethylene bag, seal the mouth of the polyethylene bag and shake it with both hands for 30 seconds to prepare a granular fertilizer compound did.
Comparative Example 3
Weigh 50g of granular fertilizer (I) and then 50g of granular fertilizer (C) into a 1L polyethylene bag, seal the mouth of the polyethylene bag and shake and shake for 30 seconds with both hands to prepare a granular fertilizer compound did.
Comparative Example 4
Weigh 50g of granular fertilizer (I) and then 50g of granular fertilizer (e) into a 1L polyethylene bag, seal the mouth of the polyethylene bag and shake with both hands for 30 seconds to prepare a granular fertilizer compound did.
試験例２
製造例３、製造例４、比較例３及び比較例４で得られた粒状肥料配合物について、異なる粒状肥料の分離のし易さについて、試験例１と同様の方法により測定した。結果を、表３に示す。
Test example 2
About the granular fertilizer compound obtained in Production Example 3, Production Example 4, Comparative Example 3 and Comparative Example 4, the ease of separating different granular fertilizers was measured by the same method as in Test Example 1. The results are shown in Table 3.
本発明の粒状肥料配合物は、配合物における異なる種の粒状肥料が分離し難く、特に動力肥料散布機を用いた肥料散布時の均一性を確保することができる。 In the granular fertilizer blend of the present invention, different types of granular fertilizers in the blend are difficult to separate, and in particular, uniformity during fertilizer spraying using a power fertilizer spreader can be ensured.
１ 包絡周囲長
２ 周囲長
1
Claims (4)
最も多く配合された種の粒状肥料とそれ以外の１０重量％以上配合された種の粒状肥料との組み合わせの全てが、下記１．および２．の関係を有することを特徴とする粒状肥料配合物。
１．粒状肥料の個々の粒子を平面として取り込んだ画像より、下記式を用いて求められる
形状係数の平均値の比が、０．３〜１．０
形状係数＝１００−（包絡周囲長／周囲長）×１００
２．日本工業規格による流動度試験方法（ＪＩＳ Ｚ ２５０２）に基づいて
オリフィス径12mmφの漏斗状オリフィス管を用いて測定される
粒状肥料の流動度（秒／ｇ）の比が、０．８〜１．３ A granular fertilizer blend comprising a plurality of kinds of granular fertilizers each having a weight average particle diameter of 2.9 to 3.2 mm,
All the combinations of the most commonly blended granular fertilizer and the other 10% by weight or more of the blended granular fertilizer are described in the following 1. And 2. The granular fertilizer compound characterized by having the following relationship.
1. From the image in which the individual particles of the granular fertilizer are captured as a plane, the ratio of the average value of the shape factor obtained using the following formula is 0.3 to 1.0.
Shape factor = 100− (envelope perimeter / perimeter) × 100
2. The ratio of fluidity (second / g) of granular fertilizer measured using a funnel-shaped orifice tube with an orifice diameter of 12 mmφ based on a flow rate test method (JIS Z 2502) according to Japanese Industrial Standard is 0.8-1. 3
工程イで決定された、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料の候補との組み合わせが、下記の関係を有するかを判定する工程（工程ロ）、および
工程ロで下記の関係を有すると判定された、最も多く配合される種の粒状肥料とそれ以外の１０重量％以上配合される種の粒状肥料とを、所定の割合で混合する工程（工程ハ）を有することを特徴とする粒状肥料配合物の製造方法。
粒状肥料の個々の粒子を平面として取り込んだ画像より、下記式を用いて求められる
形状係数の平均値の比が、０．３〜１．０
形状係数＝１００−（包絡周囲長／周囲長）×１００ The weight average particle diameter of the seeds blended most frequently in the granular fertilizer blend is 2.9 to 3.2 mm, and the weight average particle diameter of seeds blended at 10% by weight or more is 2.9. A step of determining a candidate for a granular fertilizer of ~ 3.2 mm (step a);
The step of determining whether the combination of the most frequently blended granular fertilizer and the other 10% by weight or more of the seeded granular fertilizer candidates determined in step (a) has the following relationship: B), and
The step of mixing a granular fertilizer of the most frequently blended seed that has been determined to have the following relationship in the step B with a granular fertilizer of the other blended by 10% by weight or more at a predetermined ratio (process c) The manufacturing method of the granular fertilizer compound characterized by having.
It can be obtained using the following formula from an image obtained by capturing individual particles of granular fertilizer as a flat surface.
The ratio of the average shape factor is 0.3 to 1.0
Shape factor = 100− (envelope perimeter / perimeter) × 100
日本工業規格による流動度試験方法（ＪＩＳ Ｚ ２５０２）に基づいて
オリフィス径12mmφの漏斗状オリフィス管を用いて測定される
粒状肥料の流動度（秒／ｇ）の比が、０．８〜１．３ The step B is a step of determining whether the combination of the most frequently blended granular fertilizer and the other 10% by weight or more of the blended candidate granular fertilizer has the following relationship: The manufacturing method of the granular fertilizer compound described in claim | item 3 .
Based on the flow rate test method (JIS Z 2502) according to Japanese Industrial Standards
Measured using a funnel-shaped orifice tube with an orifice diameter of 12 mm
The ratio of fluidity (second / g) of granular fertilizer is 0.8 to 1.3
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