JPH11278973A - Preventive granular agent for nitration, compound fertilizer containing the same and method for cultivating crop - Google Patents
Preventive granular agent for nitration, compound fertilizer containing the same and method for cultivating cropInfo
- Publication number
- JPH11278973A JPH11278973A JP10103973A JP10397398A JPH11278973A JP H11278973 A JPH11278973 A JP H11278973A JP 10103973 A JP10103973 A JP 10103973A JP 10397398 A JP10397398 A JP 10397398A JP H11278973 A JPH11278973 A JP H11278973A
- Authority
- JP
- Japan
- Prior art keywords
- fertilizer
- nitrification
- dicyandiamide
- granule
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil
Abstract
Description
【発明の属する技術分野】本発明は硝化抑制粒剤に関す
る。更に詳しくは、特定の溶出機能を有する消化抑制粒
剤に関する。TECHNICAL FIELD The present invention relates to a nitrification suppressing granule. More specifically, the present invention relates to a digestion-suppressing granule having a specific dissolution function.
【０００２】[0002]
【従来の技術とその問題点】化学肥料に含まれているア
ンモニア、アンモニウム塩、尿素等のアンモニア態窒素
や、有機質肥料が分解することによって生成したアンモ
ニア態窒素は、土壌中特に畑や水田の表層などの酸化的
条件で硝酸態窒素に変化しやすい。硝化と呼ばれるこの
作用は亜硝酸菌および硝酸菌等の硝化細菌によって行わ
れ、施肥されたアンモニアは亜硝酸菌によって亜硝酸態
窒素に変化し、生成した亜硝酸態窒素は硝酸菌によって
硝酸態窒素に変化する。陽イオンであるアンモニア態窒
素は、負の荷電状態にある土壌コロイドに吸着されやす
いが、陰イオンである硝酸態窒素は前述の土壌コロイド
に吸着されることなく、地下水や大気中に流亡・放出さ
れる。このため硝酸化成作用の強い土壌条件において
は、施肥した窒素肥料の作物による利用率は非常に低い
ものであった。また、作物によっては施肥窒素を硝酸態
よりもアンモニア態で供給した方が品質を向上しうると
言われている。したがって、該利用率の向上、作物の品
質向上のためには、土壌中における硝化作用を抑制し、
施用した窒素肥料をアンモニア態の状態で維持すること
が有効である。2. Description of the Related Art Ammonia nitrogen contained in chemical fertilizers, such as ammonia, ammonium salts and urea, and ammonia nitrogen generated by decomposition of organic fertilizers are found in soil, especially in fields and paddy fields. It easily changes to nitrate nitrogen under oxidizing conditions such as the surface layer. This action, called nitrification, is carried out by nitrifying bacteria such as nitrites and nitrites, and the fertilized ammonia is converted to nitrite nitrogen by the nitrite bacteria, and the nitrite nitrogen produced is converted to nitrate nitrogen by the nitrite bacteria. Changes to Ammonium nitrogen, which is a cation, is easily adsorbed by negatively charged soil colloids, while nitrate nitrogen, which is an anion, is not adsorbed by the above-mentioned soil colloids and flows into and out of groundwater and the atmosphere. Is done. Therefore, under soil conditions of strong nitrification, the utilization rate of fertilized nitrogen fertilizer by crops was very low. Also, it is said that depending on the crop, the quality can be improved by supplying fertilized nitrogen in an ammonia state rather than a nitrate state. Therefore, in order to improve the utilization rate and the quality of crops, the nitrification effect in the soil is suppressed,
It is effective to maintain the applied nitrogen fertilizer in an ammonia state.
【０００３】ジシアンジアミドは硝化抑制剤として従来
から広く用いられており、その施用に当たっては、ジシ
アンジアミド粉体、またはその造粒物、更には特開昭４
８−９０８５０号に開示の、ジシアンジアミド入り造粒
肥料の表面を酸化マグネシウムまたは、水酸化マグネシ
ウムを含むリン酸マグネシウム系難溶性塩類で被覆した
ものや、特開昭５６−８４３９４号に開示の、ジシアン
ジアミド入り尿素を樹脂等で被覆したものなどが用いら
れてきた。しかしながら、これらの資材は、その有効成
分であるジシアンジアミドが施用直後から溶出し始め、
硝化抑制を発揮するため、基肥と共に該資材を施用した
場合には、作物の生育初期にアンモニア過剰による障害
が発生するといった問題点を有していた。[0003] Dicyandiamide has been widely used as a nitrification inhibitor, and its application is performed by using dicyandiamide powder or granulated product thereof, and
A granulated fertilizer containing dicyandiamide, the surface of which is coated with magnesium oxide or a magnesium phosphate-based hardly soluble salt containing magnesium hydroxide disclosed in JP-A-8-90850, and a dicyandiamide disclosed in JP-A-56-84394. Urea containing urea coated with a resin or the like has been used. However, these materials begin to elute dicyandiamide as an active ingredient immediately after application,
When the material is applied together with the base fertilizer in order to exert the nitrification suppression, there has been a problem that a failure due to excess ammonia occurs in the early stage of growing the crop.
【０００４】[0004]
【発明が解決しようとする課題】本発明者らはこのよう
な従来技術の問題点に鑑み、基肥と共に施用した場合に
おいても作物の生育初期にアンモニアの過剰障害を発生
させない硝化抑制剤について、鋭意研究開発を行った。
その結果、本発明者らはついに、ジシアンジアミドを含
有する粒子であって、該粒子の施用からジシアンジアミ
ドの累積溶出率が該粒子が含有する全ジシアンジアミド
の１０重量％に達するまでの期間（Ｄ１）と、１０重量
％を越えて８０重量％に達するまでの期間（Ｄ２）との
比（Ｄ１／Ｄ２）が０．２以上である硝化抑制粒剤に優
れた機能があることを見いだし、知見に基づき本発明を
完成した。以上の記述からも明らかなように、本発明の
目的は、基肥と共に施用した場合においても作物の生育
初期にアンモニアによる過剰障害が発生しにくい硝化抑
制剤を提供することにある。SUMMARY OF THE INVENTION In view of such problems of the prior art, the present inventors have keenly developed a nitrification inhibitor which does not cause excessive damage of ammonia in the early stage of crop growth even when applied together with a base fertilizer. Research and development.
As a result, the present inventors finally found that the particles (D1) containing the dicyandiamide after application of the particles until the cumulative elution rate of dicyandiamide reached 10% by weight of the total dicyandiamide contained in the particles. It was found that the nitrification inhibiting granules having a ratio (D1 / D2) of 0.2 or more with respect to a period (D2) exceeding 10% by weight and reaching 80% by weight had an excellent function, and The present invention has been completed. As is clear from the above description, an object of the present invention is to provide a nitrification inhibitor which is less likely to cause excessive damage due to ammonia in the early stage of crop growth even when applied together with a base fertilizer.
【０００５】[0005]
【課題を解決するための手段】本発明は、下記（１）〜
（１２）の構成を有する。 （１）ジシアンジアミドを含有する粒子であって、該粒
子の施用からジシアンジアミドの累積溶出率が該粒子が
含有する全ジシアンジアミドの１０重量％に達するまで
の期間（Ｄ１）と、１０重量％を越えて８０重量％に達
するまでの期間（Ｄ２）との比（Ｄ１／Ｄ２）が０．２
以上である硝化抑制粒剤。 （２）ジシアンジアミドを含有する粒子の表面が被膜材
で被覆された前記第１項に記載の硝化抑制粒剤。 （３）肥料成分を含有する前記第１ないし２項に記載の
硝化抑制粒剤。 （４）肥料成分がアンモニア系窒素肥料である前記第３
項に記載の硝化抑制粒剤。 （５）肥料成分が尿素である前記第４項に記載の硝化抑
制粒剤。 （６）前記第１から５項に記載の何れか１つに記載の硝
化抑制粒剤と肥料成分とからなる硝化抑制粒剤配合肥
料。 （７）肥料が化学合成系緩効性肥料又は物理的に溶出速
度が制御された緩効性肥料である前記第６項に記載の硝
化抑制粒剤配合肥料。 （８）物理的に溶出速度が制御された緩効性肥料が、肥
料粒子の表面を被膜材で被覆した被覆粒状肥料である前
記第７項に記載の硝化抑制粒剤配合肥料。 （９）前記第１から５項の何れか１つに記載の硝化抑制
粒剤を用いた作物の栽培方法。 （１０）前記第６から８項の何れか１つに記載の硝化抑
制粒剤配合肥料を用いた作物の栽培方法。 （１１）前記第１から５項の何れか１つに記載の硝化抑
制粒剤を用いたホウレンソウの栽培方法。 （１２）前記第６から８項の何れか１つに記載の硝化抑
制粒剤配合肥料を用いたホウレンソウの栽培方法。 本発明の構成と効果について以下に詳述する。Means for Solving the Problems The present invention provides the following (1) to
It has the configuration of (12). (1) Dicyandiamide-containing particles (D1) during the period from the application of the particles until the cumulative elution rate of dicyandiamide reaches 10% by weight of the total dicyandiamide contained in the particles, and more than 10% by weight. The ratio (D1 / D2) to the period (D2) until reaching 80% by weight is 0.2
The nitrification suppressing granules described above. (2) The nitrification-suppressing granule according to the above (1), wherein the surface of the particles containing dicyandiamide is coated with a coating material. (3) The nitrification-suppressing granule according to the above (1) or (2), comprising a fertilizer component. (4) The third fertilizer wherein the fertilizer component is an ammonia-based nitrogen fertilizer.
Item 15. The nitrification-inhibiting granules according to Item. (5) The nitrification suppressing granule according to the above item 4, wherein the fertilizer component is urea. (6) A nitrification-suppressed granule-containing fertilizer comprising the nitrification-suppressed granule according to any one of the first to fifth items and a fertilizer component. (7) The nitrification-suppressed granule-containing fertilizer according to the above item 6, wherein the fertilizer is a chemically synthesized slow-release fertilizer or a slow-release fertilizer with a physically controlled dissolution rate. (8) The nitrification-suppressed granule-containing fertilizer according to the above item 7, wherein the slow-release fertilizer whose dissolution rate is physically controlled is a coated granular fertilizer in which the surface of fertilizer particles is coated with a coating material. (9) A method for cultivating a crop using the nitrification-suppressing granule according to any one of the first to fifth aspects. (10) A method for cultivating a crop using the nitrification-suppressed granule-containing fertilizer according to any one of the above items 6 to 8. (11) A method for cultivating spinach using the nitrification-suppressing granule according to any one of the first to fifth aspects. (12) A method for cultivating spinach using the nitrification-suppressed granule-containing fertilizer according to any one of the above items 6 to 8. The configuration and effect of the present invention will be described in detail below.
【０００６】本願第１の発明は、施用からジシアンジア
ミドの累積溶出率が該粒子が含有する全ジシアンジアミ
ドの１０重量％に達するまでの期間（以下「Ｄ１」と記
す。）と、１０重量％を越えて８０重量％に達するまで
の期間（以下「Ｄ２」と記す。）との比が０．２以上の
ジシアンジアミドの溶出機能（以下「時限溶出機能」と
記す。）を有する硝化抑制粒剤である。該時限溶出機能
を有するものであれば、如何なる組成のものであっても
本発明の効果が得られる。栽培する作物や栽培方法によ
って異なるものの、Ｄ１が１０日〜５０日の間であり、
Ｄ１とＤ２との比（Ｄ１／Ｄ２）が０．５以上の溶出機
能を有するものであれば特に顕著な効果が得られる。In the first invention of the present application, the period from application until the cumulative dissolution rate of dicyandiamide reaches 10% by weight of the total dicyandiamide contained in the particles (hereinafter referred to as "D1"), exceeds 10% by weight. Is a nitrification-inhibiting granule having a dissolution function of dicyandiamide (hereinafter, referred to as “timed dissolution function”) having a ratio of 0.2 or more to a period of time until reaching 80% by weight (hereinafter, referred to as “D2”). . The effects of the present invention can be obtained with any composition as long as it has the timed elution function. D1 is between 10 days and 50 days, although it depends on the crops and cultivation method to be cultivated,
Particularly remarkable effects can be obtained as long as the ratio (D1 / D2) of D1 and D2 has an elution function of 0.5 or more.
【０００７】本発明の時限溶出機能は、物理的な手段に
より達成されたものでも、化学的な手段によって達成さ
れたものであっても構わないが、ジシアンジアミドを含
有する粒子の表面を、被膜材で被覆するといった物理的
手段が有効である。本発明に用いる被膜材は、有機材
料、無機材料の何れを用いても良く、有機材料としては
樹脂が挙げられ、無機材料としては硫黄などを挙げるこ
とができる。The timed elution function of the present invention may be achieved by physical means or by chemical means, but the surface of the particles containing dicyandiamide may be coated with a coating material. It is effective to use physical means, such as coating with. The coating material used in the present invention may be any of an organic material and an inorganic material. Examples of the organic material include a resin, and examples of the inorganic material include sulfur.
【０００８】本発明の被膜材として使用する樹脂につい
ては特に限定するものではなく、所望のＤ１およびＤ２
が得られるように材料を適宜選択して用いればよい。長
いＤ１を得るには、水分透過性の小さなオレフィン系重
合体、およびその共重合体、若しくは塩化ビニリデン系
重合体、およびその共重合体を用いることが望ましい。
具体的にはポリオレフィンおよびその共重合体で、ポリ
エチレン、ポリプロピレン、エチレン・プロピレン共重
合体、エチレン・酢酸ビニル共重合体、エチレン・一酸
化炭素共重合体、エチレン・酢酸ビニル・一酸化炭素共
重合体、エチレン・アクリレート共重合体、エチレン・
メタクリル酸共重合体、ゴム系樹脂、ポリスチレン、ポ
リメチルメタアクリレート等を挙げることができる。こ
れらの樹脂は単独で用いても良いし、また、所望の溶出
パターンが得られるように複数の樹脂を用いても良い。[0008] The resin used as the coating material of the present invention is not particularly limited.
The material may be appropriately selected and used so as to obtain. In order to obtain a long D1, it is desirable to use an olefin polymer having a small moisture permeability and a copolymer thereof, or a vinylidene chloride polymer and a copolymer thereof.
Specifically, polyolefins and their copolymers include polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-carbon monoxide copolymer, ethylene-vinyl acetate-carbon monoxide copolymer. Coalescence, ethylene acrylate copolymer, ethylene
Examples include methacrylic acid copolymers, rubber resins, polystyrene, polymethyl methacrylate, and the like. These resins may be used alone, or a plurality of resins may be used so as to obtain a desired elution pattern.
【０００９】さらに細かく溶出パターンを調節するため
に、本発明においては上記樹脂以外に、充填剤、界面活
性剤等を用いることができる。充填剤としては、タル
ク、クレイ、金属酸化物、珪酸塩鉱物、硫黄等の無機粉
体が水に難溶性ないし不溶性であるため望ましい。界面
活性剤としては高級脂肪酸塩類、高級アルキルジカルボ
ン酸塩類、高級アルコール硫酸エステル塩類、高級アル
キル・スルフォン酸塩類、高級アルキル・ジスルフォン
酸塩類、スルフォン化高級脂肪酸塩類、高級アルキル燐
酸エステル塩類等のアニオン界面活性剤、高級アルキル
・アミン塩類、第４級アンモニウム塩類等のカチオン界
面活性剤、ポリオールの脂肪酸エステル、ポリエチレン
・オキサイド縮合型等のノニオン界面活性剤を用いるこ
とができる。In order to finely control the elution pattern, in the present invention, a filler, a surfactant and the like can be used in addition to the above-mentioned resin. As the filler, inorganic powders such as talc, clay, metal oxides, silicate minerals, and sulfur are preferable because they are hardly soluble or insoluble in water. Surfactants include anionic interfaces such as higher fatty acid salts, higher alkyl dicarboxylates, higher alcohol sulfates, higher alkyl sulfonates, higher alkyl disulfonates, sulfonated higher fatty acid salts, higher alkyl phosphate salts and the like. Surfactants, cationic surfactants such as higher alkyl amine salts and quaternary ammonium salts, fatty acid esters of polyols, and nonionic surfactants such as polyethylene oxide condensation type can be used.
【００１０】時限溶出機能の達成可能な被膜組成として
は、例えば特開平６−８７６８４号に開示の、樹脂に糖
重合体を分散させた被膜、特開平４−２０２０７８号に
開示の、アルカリ物質からなる第１層とオレフィン系重
合体にアルカリ水可溶性重合体を混合したものからなる
第２層で構成された被膜、特開平４−２０２０７９号に
開示の、高吸水膨潤性物質からなる第１層とオレフィン
系樹脂からなる第２層で構成された被膜、特開平９−３
０８８３号に開示の、ワックスを含む第１層と熱可塑性
樹脂を含む第２層で構成された被膜などが挙げられる。
この中でも特開平６−８７６８４号に開示の被膜に開示
の組成であれば、単層の被膜で時限溶出機能が達成でき
ることから、製造コストの面で有効であり、更に、溶出
抑制期間制御の精密さの点でも有利である。The coating composition capable of achieving the timed elution function includes, for example, a coating in which a saccharide polymer is dispersed in a resin disclosed in JP-A-6-87684 and an alkali substance disclosed in JP-A-4-202078. Consisting of a first layer made of a mixture of an olefin polymer and an alkali water-soluble polymer, and a first layer made of a highly water-swellable substance disclosed in JP-A-4-202079. And a second layer comprising an olefin-based resin
No. 0883, a coating composed of a first layer containing a wax and a second layer containing a thermoplastic resin.
Among them, the composition disclosed in the coating disclosed in Japanese Patent Application Laid-Open No. 6-87684 is effective in terms of manufacturing cost since a timed elution function can be achieved with a single-layer coating, and furthermore, the precision of controlling the elution suppression period is controlled. It is also advantageous in terms of the point.
【００１１】更に、特開平９−２６８１０３において
は、水膨潤性物質と農薬成分とからなる粒子の表面を、
樹脂被膜で被覆した被覆農薬粒剤が開示されており、農
薬成分とジシアンジアミドを入れ替えた組成であっても
本発明の時限溶出機能が達成される。ジシアンジアミド
自体は水に難溶性であり、吸湿性も低いことから、被覆
を受ける粒子において、ジシアンジアミドの割合が非常
に高い場合、または、該粒子の組成に吸湿性の造粒助剤
を用いない、若しくはその使用量が少量の場合にも、特
開平９−２６８１０３に開示の被膜組成は特に有効であ
る。Further, in Japanese Patent Application Laid-Open No. 9-268103, the surface of a particle comprising a water-swellable substance and an agricultural chemical component is
A coated pesticide granule coated with a resin film is disclosed, and the time-dissolved function of the present invention is achieved even with a composition in which a pesticide component is replaced with dicyandiamide. Since dicyandiamide itself is poorly soluble in water and has low hygroscopicity, the particles to be coated have a very high proportion of dicyandiamide, or do not use a hygroscopic granulating aid in the composition of the particles. Alternatively, even when the amount used is small, the coating composition disclosed in JP-A-9-268103 is particularly effective.
【００１２】本発明のジシアンジアミドを含有する粒子
には、有効成分であるジシアンジアミド以外に、各種造
粒助剤、結合材などを添加しても良い。造粒助剤として
は、ベントナイト、クレイ、カオリン、セリサイト、タ
ルク、酸性白土、軽石、珪砂、珪石、炭酸カルシウム、
ゼオライト、パーライト、バーミキュライト等の鉱物
質、モミガラ、オガクズ、木質粉、パルプフロック、大
豆粉、デンプン等の植物質が挙げられ、結合材として
は、アラビアゴム、カルボキシメチルセルロース、ヒド
ロキシエチルセルロース、リグニンスルホン酸塩類、ポ
リビニルアルコール、ポリエチレングリコール、界面活
性剤類、流動パラフィン等を用いることができる。The dicyandiamide-containing particles of the present invention may contain various granulating auxiliaries, binders and the like in addition to the dicyandiamide as an active ingredient. Granulation aids include bentonite, clay, kaolin, sericite, talc, acid clay, pumice, quartz sand, quartzite, calcium carbonate,
Mineral substances such as zeolite, perlite, vermiculite, etc., and plant materials such as firgrass, sawdust, wood flour, pulp floc, soy flour, starch, etc., and as the binder, gum arabic, carboxymethyl cellulose, hydroxyethyl cellulose, lignin sulfonates , Polyvinyl alcohol, polyethylene glycol, surfactants, liquid paraffin, and the like.
【００１３】また、本発明のジシアンジアミドを含有す
る粒子には、本発明の有効成分であるジシアンジアミド
以外に、肥料成分を添加しても良く、肥料成分の中でも
尿素、塩安、硫安等のアンモニア系窒素肥料は、ジシア
ンジアミドと共に存在、さらに溶出することにより硝化
抑制作用がより効果的に発現される。その中でも尿素を
用いると作物の品質がさらに向上しうるため有効であ
る。The particles containing dicyandiamide of the present invention may contain a fertilizer component in addition to the dicyandiamide which is the active ingredient of the present invention. Among the fertilizer components, urea, ammonium salt such as ammonium salt and ammonium sulfate may be used. Nitrogen fertilizer is present together with dicyandiamide, and is further eluted to more effectively exhibit a nitrification suppressing effect. Among them, the use of urea is effective because the quality of crops can be further improved.
【００１４】本発明の硝化抑制粒剤の形状は限定される
ものではないが、本発明の硝化抑制粒剤と例えば肥料の
如き農業資材と配合する場合には、分級などの問題が起
きないよう、粒子径を、その他の資材と揃えるなどの配
慮が必要である。また、ジシアンジアミドを含有する粒
子の表面を被膜材で被覆する場合には、該粒子は出来る
だけ真球に近いほど均一な被膜が出来ることから、下記
式により求められる該粒子の円形度係数は０．７以上で
あることが好ましい。 円形度係数＝（４π×粒子の投影面積）／（粒子投影図
の輪郭の長さ）2 ジシアンジアミドを含有する粒子を造粒する方法は特に
限定されるものではないが、回転パンや回転ドラム内で
粒状化する方法が製造コストの面から有利である。The shape of the nitrification-inhibiting granules of the present invention is not limited. However, when the nitrification-inhibiting granules of the present invention are mixed with agricultural materials such as fertilizers, problems such as classification do not occur. In addition, it is necessary to consider that the particle diameter is made uniform with other materials. When the surface of the particles containing dicyandiamide is coated with a coating material, the particles can form a uniform film as close to a true sphere as possible, so that the circularity coefficient of the particles obtained by the following equation is 0. .7 or more. Circularity coefficient = (4π × projected area of particles) / (length of contour of particle projected view) The method of granulating particles containing 2 dicyandiamide is not particularly limited, but may be performed in a rotating pan or a rotating drum. The method of granulating by using is advantageous from the viewpoint of production cost.
【００１５】本願第２の発明は、施用からジシアンジア
ミドの累積溶出率が該粒子が含有する全ジシアンジアミ
ドの１０重量％に達するまでの期間と、１０重量％を越
えて８０重量％に達するまでの期間との比が０．２以上
のジシアンジアミドの溶出機能を有する硝化抑制粒剤
と、肥料成分とからなる硝化抑制粒剤配合肥料である。
本発明の硝化抑制粒剤配合肥料は、生育に必要な肥料成
分を各種作物、栽培地に合わせて混合したものである。
この肥料を用いることによって、単一成分を別々に施用
する手間を軽減することができるので有効である。[0015] The second invention of the present application relates to a period from the time of application until the cumulative dissolution rate of dicyandiamide reaches 10% by weight of the total dicyandiamide contained in the particles, and the period from when it exceeds 10% by weight to when it reaches 80% by weight. Is a nitrification-inhibiting granule-containing fertilizer comprising a nitrification-inhibiting granule having a function of dissolving dicyandiamide having a ratio of 0.2 or more and a fertilizer component.
The nitrification-suppressed granule-containing fertilizer of the present invention is obtained by mixing fertilizer components necessary for growth in accordance with various crops and cultivation areas.
Use of this fertilizer is effective because the labor for separately applying a single component can be reduced.
【００１６】肥料成分としては、尿素、硫安、塩安、硝
安、石灰窒素、腐植酸アンモニア等の窒素質肥料、過燐
酸石灰、重過燐酸石灰、溶成りん肥、焼成りん肥、腐植
酸りん肥等のリン酸肥料、硫酸加里、塩化加里、重炭酸
加里、腐植酸加里、珪酸加里等の加里肥料、骨粉、油か
す、肉かす等の有機質肥料、高度化成肥料、ウレアホル
ム、ＩＢＤＵ、ＣＤＵ、硫酸グアニル尿素、オキサミド
等の化学合成系緩効性肥料、肥料粒子の表面を樹脂など
の被膜材で被覆した被覆粒状肥料等の物理的に溶出速度
が制御された緩効性肥料を挙げることができる。[0016] Fertilizer components include nitrogenous fertilizers such as urea, ammonium sulfate, salt ammonium, ammonium nitrate, lime nitrogen, humic acid ammonia, lime superphosphate, heavy superphosphate, lime fertilizer, calcined phosphorus fertilizer, phosphorus humic acid. Phosphorus fertilizers such as fertilizers, sulfate fertilizers, chlorides, bicarbonates, humic acids, silicates, etc., organic fertilizers such as bone meal, oil residues, meat residues, etc., advanced chemical fertilizers, ureaform, IBDU, CDU, Slow-release fertilizers such as guanylurea sulfate, oxamide, etc., and chemically controlled slow-release fertilizers, such as coated granular fertilizers in which the surfaces of fertilizer particles are coated with a coating material such as resin, and the like, are physically controlled in dissolution rate. it can.
【００１７】これらのうち、化学合成系緩効性肥料また
は物理的に溶出速度が制御された緩効性肥料であれば、
ジシアンジアミドが作用する窒素肥料の追肥回数を減ら
すことができるので好ましい。さらに、物理的に溶出速
度が制御された緩効性肥料のうち、肥料粒子の表面を樹
脂などの被膜材で被覆した被覆粒状肥料であれば、溶出
速度の制御が厳密であるため、アンモニア態窒素の供給
量や供給時期を調節しやすいのでより好ましい。Of these, a chemically synthesized slow-release fertilizer or a slow-release fertilizer whose dissolution rate is physically controlled,
It is preferable because the number of times of top fertilization of the nitrogen fertilizer on which dicyandiamide acts can be reduced. Furthermore, among the slow-release fertilizers in which the elution rate is physically controlled, the coated granular fertilizer in which the surface of the fertilizer particles is coated with a coating material such as a resin, since the elution rate is strictly controlled, the ammonia state This is more preferable because the amount and timing of supply of nitrogen can be easily adjusted.
【００１８】本発明の第３の発明は、本発明の硝化抑制
粒剤、若しくは硝化抑制粒剤配合肥料を用いた作物の栽
培方法である。本発明の硝化抑制粒剤、若しくは硝化抑
制粒剤配合肥料は、いずれの作物の栽培に用いても有効
である。硝酸態窒素の割合が高い土壌で作物を栽培する
場合には、窒素成分は硝酸態窒素の状態で作物体中に取
り込まれる。植物体内の硝酸は、人間が摂食した場合、
アミノ酸やタンパク質のような人体の窒素源とならない
ばかりか、硝酸の一部は毒性のある亜硝酸に変わり、人
体に悪影響を及ぼす。また、ホウレンソウにおいては、
栽培土壌中の硝酸態窒素含有量が高くなるほど、植物体
内のシュウ酸含量が上昇する傾向がある。シュウ酸は食
味を悪くするあくの主成分とされ、また人が多量に摂取
するとカルシウムの吸収を阻害したり、結石の原因にな
るとされている。本発明はこのような、問題の回避手段
として非常に有効である。The third invention of the present invention is a method for cultivating a crop using the nitrification-inhibiting granules of the present invention or the fertilizer containing the nitrification-inhibiting granules. The nitrification-inhibiting granules or the nitrification-inhibiting granule-containing fertilizers of the present invention are effective for cultivation of any crop. When cultivating a crop in a soil where the proportion of nitrate nitrogen is high, the nitrogen component is taken into the crop body in the form of nitrate nitrogen. Nitric acid in the plant, when consumed by humans,
Not only does it not serve as a nitrogen source for the human body, such as amino acids and proteins, but also some of the nitrate turns into toxic nitrous acid, which has a negative effect on the human body. In spinach,
As the nitrate nitrogen content in the cultivation soil increases, the oxalic acid content in the plant tends to increase. Oxalic acid is considered to be the main ingredient in the stomach, which impairs palatability, and when taken in large quantities by humans, inhibits calcium absorption and causes calculi. The present invention is very effective as a means for avoiding such a problem.
【００１９】本発明の栽培方法は好アンモニア性植物と
好硝酸性植物の両方に適用することができるが、アンモ
ニア障害の発生しやすい好硝酸性作物の栽培に用いるこ
とが特に有効である。好硝酸性作物については、具体的
にはタバコ、トマト、トウガラシ、アズキ、エンドウ、
ジャガイモ、カブ、ソラマメ、キャベツ、ハクサイ、カ
ラシナ、ダイコン、ビート、ホウレンソウ、キュウリ、
コマツナ、シュンギク、タマネギ、ライムギ、ソバ、ワ
タ等が挙げられるが、葉身、葉柄、葉脈部が可食部位で
あるホウレンソウ、コマツナ、シュンギク等の葉菜類に
用いるのが特に有効である。Although the cultivation method of the present invention can be applied to both ammoniaphilic plants and nitrite plants, it is particularly effective to use it for cultivating nitrite crops which are susceptible to ammonia damage. For nitrite crops, specifically, tobacco, tomato, pepper, adzuki beans, peas,
Potato, turnip, broad bean, cabbage, Chinese cabbage, mustard, radish, beet, spinach, cucumber,
Komatsuna, shungiku, onion, rye, buckwheat, cotton and the like can be mentioned, and it is particularly effective to use leaf vegetables such as spinach, komatsuna and shungiku whose leaf blade, petiole and vein are edible sites.
【００２０】本発明の硝化抑制粒剤、若しくは硝化抑制
粒剤配合肥料の施用は、栽培前、栽培期間中のいずれの
時期に行ってもかまわないが、施用の手間を考えると基
肥の施用と一緒に行うのが最適である。基肥と一緒に施
用する場合、アンモニアによる障害が起きにくくなる時
期に、初期Ｄ２が終了するようなタイプのものを選択
し、肥料と混合後施用する方法が最も好ましい。土壌中
のアンモニア態窒素の割合は植物体がある程度成長して
から増加させる方が良い。そうすれば好硝酸性作物の初
期生育を確保しつつ、収穫時の葉中の硝酸態窒素濃度を
低下させ、安全性・品質を向上させることができる。The nitrification-inhibiting granules of the present invention or the fertilizer containing the nitrification-inhibiting granules may be applied at any time during the cultivation period before or during cultivation. It is best to work together. When applied together with the base fertilizer, it is most preferable to select a type in which the initial stage D2 is completed at a time when the trouble caused by ammonia is less likely to occur, and to apply the fertilizer after mixing. It is better to increase the proportion of ammonia nitrogen in the soil after the plant has grown to some extent. By doing so, it is possible to reduce the concentration of nitrate nitrogen in the leaves at the time of harvesting and to improve the safety and quality while securing the initial growth of the nitrite crop.
【００２１】施肥方法としては、育苗ポットに入れる方
法、苗の定植時に定植穴の中に投入する方法、栽培土壌
表面に散布する方法、全面全層施肥法等が挙げられ、栽
培植物によって適宜選択すればよい。Examples of the fertilization method include a method of putting the seedlings in a seedling pot, a method of putting the seedlings into a planting hole at the time of planting, a method of spraying on the surface of the cultivated soil, a method of applying the whole layer of fertilizer, and the like. do it.
【００２２】以下実施例により本発明を説明する。 実施例１ １．粒子の製造例 表１に示される組成からなる粒剤原料を、加水しながら
ニーダーで混練し、これを押し出し造粒し、整粒機（不
二パウダル（株）製、マルメライザーＱＪ４００）にて
円形度係数が０．７以上になるまで平滑化処理を行っ
た。次に、該造粒物を熱風循環乾燥機を用いて乾燥し、
粒径２．３６ｍｍ〜２．００ｍｍの粒を得た。該粒子の
円形度係数は株式会社ピアス製のＰＩＡＳ−ＩＶを用い
て測定した。測定は、ランダムに取り出した粒子１００
個を用いて行った。Hereinafter, the present invention will be described with reference to examples. Example 1 Example of Production of Particles A raw material having the composition shown in Table 1 was kneaded with a kneader while adding water, extruded and granulated, and then sized using a granulator (Malmerizer QJ400, manufactured by Fuji Paudal Co., Ltd.). The smoothing process was performed until the circularity coefficient became 0.7 or more. Next, the granulated material is dried using a hot air circulation dryer,
Particles having a particle size of 2.36 mm to 2.00 mm were obtained. The circularity coefficient of the particles was measured using PIAS-IV manufactured by Pierce. The measurement was performed using particles 100 randomly taken out.
This was performed using individual pieces.
【００２３】[0023]
【表１】 [Table 1]
【００２４】２．被覆方法 粒の被覆には噴流被覆装置を用いた。本実施例において
用いた噴流被覆装置を図−１に示す。１は噴流塔で塔径
２５０ｍｍ、高さ２０００ｍｍ、窒素ガス噴出口径５０
ｍｍ、円錐角５０度で粒子投入口２、排ガス出口３を有
する。噴流用窒素ガスはブロアー１０から送られ、オリ
フィス流量計９、熱交換機８を経て噴流塔に至るが、流
量は流量計、温度は熱交換機で管理され、排気は排ガス
出口３から塔外に導き出される。被覆処理に使用される
粒子は粒子投入口２から所定の熱風（窒素ガス）を通し
ながら投入し、噴流を形成させる。熱風温度はＴ１、被
覆処理中の粒子温度はＴ２、排気温度はＴａの温度計に
より検出される。Ｔ２が所定の温度になったら、被覆液
を一流体ノズル４を通して噴霧状で噴流に向かって吹き
付ける。被覆液は液タンク１１で攪拌しておき、粉体使
用の場合は粉体が被覆液中に均一に分散されているよう
に攪拌しておく。所定の被覆率に達したらブロアーを止
め、被覆された粒子を抜き出し口７より排出する。本製
造例では下記の基本条件を維持しつつ所定の被覆率にな
るまで被覆を行った。 一流体ノズル：開口０．６ｍｍフルコン型 熱風量：４ｍ3／ｍｉｎ 熱風温度：１００±２℃ 粒子投入量：１０ｋｇ 供試溶剤：トルエン 被覆液濃度：固形分１．５重量％ 被覆液供給量：０．１ｋｇ／ｍｉｎ 被覆率：１５重量％ この方法で作成した粒剤の被膜組成は表２に示した。2. Coating method A jet coating device was used for coating the particles. FIG. 1 shows a jet coating apparatus used in this embodiment. Reference numeral 1 denotes a jet tower having a tower diameter of 250 mm, a height of 2000 mm, and a nitrogen gas outlet diameter of 50.
mm, a cone angle of 50 degrees, and a particle inlet 2 and an exhaust gas outlet 3. The nitrogen gas for the jet is sent from the blower 10 and reaches the jet tower through the orifice flow meter 9 and the heat exchanger 8. The flow rate is controlled by the flow meter, the temperature is controlled by the heat exchanger, and the exhaust gas is led out of the exhaust gas outlet 3 to the outside of the tower. It is. The particles used for the coating treatment are injected from the particle input port 2 while passing a predetermined hot air (nitrogen gas) to form a jet. The hot air temperature is detected by a thermometer T1, the particle temperature during the coating process is detected by T2, and the exhaust gas temperature is detected by a Ta thermometer. When T2 reaches a predetermined temperature, the coating liquid is sprayed through the one-fluid nozzle 4 toward the jet. The coating liquid is stirred in the liquid tank 11 and, in the case of using powder, is stirred so that the powder is uniformly dispersed in the coating liquid. When a predetermined coverage is reached, the blower is stopped and the coated particles are discharged from the outlet 7. In this production example, coating was performed until a predetermined coverage was achieved while maintaining the following basic conditions. One-fluid nozzle: opening 0.6 mm full-con type Hot air volume: 4 m 3 / min Hot air temperature: 100 ± 2 ° C. Particle input amount: 10 kg Test solvent: toluene Coating solution concentration: solid content 1.5% by weight Coating solution supply amount: 0.1 kg / min Coverage: 15% by weight The coating composition of the granules prepared by this method is shown in Table 2.
【００２５】[0025]
【表２】 [Table 2]
【００２６】実施例２ ３．土壌中での溶出試験 １Ｌ容の容器に２ｍｍパスの風乾土壌（シラス）を１ｋ
ｇ入れ、そこに実施例１の方法で得た粒剤を全窒素で
１．０ｇ相当量、水を最大容水量の６０％になるように
入れ混合した。容器の上縁をポリエチレンフィルムで覆
い２５℃の恒温室に静置した。所定の期間経過後に試料
を全て回収し粉砕して被膜の内部に残存するジシアンジ
アミドを定量し、溶出率を算出した。試験は全て３反復
制とした。このような操作を反復して土中に溶出したジ
シアンジアミドの溶出累計と日数の関係をグラフ化して
溶出速度曲線を作成し、Ｄ１とＤ２を求め表２に示し
た。Embodiment 2 3. Dissolution test in soil 1k of air-dried soil (silas) with 2mm pass in 1L container
g of the granules obtained by the method of Example 1 was added thereto in an amount equivalent to 1.0 g of total nitrogen, and water was mixed so as to be 60% of the maximum water capacity. The upper edge of the container was covered with a polyethylene film and allowed to stand in a constant temperature room at 25 ° C. After a lapse of a predetermined period, all the samples were collected and pulverized, and dicyandiamide remaining inside the coating film was quantified to calculate the elution rate. All tests were performed in triplicate. By repeating such an operation, the relationship between the total amount of dicyandiamide eluted in the soil and the number of days was graphed to prepare an elution rate curve, and D1 and D2 were determined and shown in Table 2.
【００２７】実施例３ ４．該粒剤入り配合肥料の作成 硫安、苦土リン肥、硫加、被覆尿素、及び実施例１で作
成した粒剤を混合し、硝化抑制粒剤配合肥料を得た。こ
の配合肥料は、ホウレンソウを栽培する際必要とされる
施肥量をもとに作成した。配合組成を表３に示した。Embodiment 3 4. Preparation of Combined Fertilizer Containing Granules Ammonium sulfate, magnesium phosphate fertilizer, sulfuration, coated urea, and the granules prepared in Example 1 were mixed to obtain a nitrification-suppressed granule-combined fertilizer. This compound fertilizer was prepared based on the amount of fertilization required when spinach was grown. The composition is shown in Table 3.
【００２８】[0028]
【表３】 [Table 3]
【００２９】実施例４ ５．ホウレンソウの栽培試験 黒ボク土の圃場で、十分な灌水を行った後播種（播種
日：９月３０日、品種アトラス、条間１５ｃｍ）した。
施肥は播種時に全面全層施肥方式で行った。播種後２０
日後に間引きを行い、株間が６ｃｍになるようにした。
サンプリングは播種後７５日後に行い、葉中の硝酸態窒
素含量およびシュウ酸含量を測定した。結果を表４に示
す。ジシアンジアミドを用いていない試験区１と他の試
験区で、葉中の硝酸態窒素含量及びシュウ酸含量を比べ
ると、試験区１は両含量とも非常に高かった。したがっ
て、ジシアンジアミドをホウレンソウの栽培に用いるの
は、葉中の硝酸態窒素含量及びシュウ酸含量を下げるの
に有効であると言えた。被覆していないジシアンジアミ
ド入り粒子を用いた試験区２及び３は生育初期のアンモ
ニア態窒素供給量が多すぎ、正常に発芽しなかった。こ
のことから、該粒子を基肥として用いる場合、粒子を被
覆して生育初期にジシアンジアミドが土壌中に供給され
ないようにすることは有効であると考えられた。試験区
４及び１２はＤ１／Ｄ２の比が０．２以下の粒剤を用い
たため、アンモニア障害が若干発生した。また、硝酸態
窒素含量及びシュウ酸含量を、試験区４、１２とＤ１／
Ｄ２の比が０．２以上の該粒剤を用いた試験区５、６、
７、８、９、１０、１１、１２で比較すると、両含量共
に該粒剤を用いた区の方が低かった。したがって、これ
らの比が０．２以上の該粒剤を用いることによって硝酸
態窒素含量とシュウ酸含量が低い作物を作ることができ
ると言えた。これらのうち、試験区８は期溶出抑制期間
／Ｄ２の比が０．５以下の該粒剤を用いたため、硝化抑
制の効果が少なく、望ましくは比が０．５以上である方
が良いことが示された。試験区６と試験区７を比較する
と、葉中の硝酸態窒素含量とシュウ酸含量が低かったの
は試験区７の方であった。このことから、粒子を作る
際、ジシアンジアミドと混合する肥料成分は尿素である
方が良いことが分かった。該粒剤を混合した配合肥料を
用いた試験区において、葉中の硝酸態窒素含量が低かっ
たのは試験区１０、１１、１２であった。試験区１０、
１１で低かったのは、該粒剤に混合した窒素肥料が物理
的に溶出速度が制御された樹脂被覆の肥料であったた
め、該粒剤からのジシアンジアミド溶出と同時期に窒素
肥料成分が土壌に供給されたことによると考えられる。
また、試験区１２で低かったのは試験区７と同じよう
に、尿素を混合したジシアンジアミドの粒剤を用いたた
めと考えられた。以上の結果から、本発明の粒剤を用い
ることによってホウレンソウの品質・安全性を高めうる
ことが示された。Embodiment 4 5. Spinach cultivation test In a field of Andosols, after sufficient irrigation, sowing was performed (seeding date: September 30, cultivar atlas, strip 15 cm).
Fertilization was performed at the time of sowing using a full-thickness fertilization system. 20 after sowing
After a day, thinning was performed so that the distance between the strains became 6 cm.
Sampling was performed 75 days after sowing, and the nitrate nitrogen content and oxalic acid content in the leaves were measured. Table 4 shows the results. Comparing the nitrate nitrogen content and the oxalic acid content in the leaves between the test section 1 in which dicyandiamide was not used and the other test section, the test section 1 was very high in both contents. Therefore, it could be said that the use of dicyandiamide for spinach cultivation was effective in reducing the nitrate nitrogen content and oxalic acid content in the leaves. Test groups 2 and 3 using uncoated dicyandiamide-containing particles did not germinate normally because the supply of ammonia nitrogen in the initial stage of growth was too large. From this, it was considered effective to coat the particles so that dicyandiamide would not be supplied to the soil in the early stage of growth when the particles were used as a base fertilizer. In the test plots 4 and 12, since the granules having a D1 / D2 ratio of 0.2 or less were used, some ammonia damage occurred. In addition, the nitrate nitrogen content and the oxalic acid content were measured with D1 / D1 /
Test plots 5, 6, using the granules having a ratio of D2 of 0.2 or more,
As compared with 7, 8, 9, 10, 11, and 12, both contents were lower in the section using the granules. Therefore, it can be said that a crop having a low nitrate nitrogen content and a low oxalic acid content can be produced by using the granules having these ratios of 0.2 or more. Among these, in test section 8, the ratio of the period elution inhibition period / D2 was 0.5 or less, so that the effect of inhibiting nitrification was small, and the ratio should preferably be 0.5 or more. It has been shown. When the test plot 6 and the test plot 7 were compared, the test plot 7 had the lower nitrate nitrogen content and the lower oxalic acid content in the leaves. From this, it was found that the fertilizer component to be mixed with dicyandiamide when producing particles was better to be urea. In the test plots using the compound fertilizer mixed with the granules, the test plots 10, 11, and 12 had low nitrate nitrogen contents in the leaves. Test plot 10,
11 was low because the nitrogen fertilizer mixed with the granule was a resin-coated fertilizer with a physically controlled elution rate, and the nitrogen fertilizer component was released to the soil at the same time as the dicyandiamide elution from the granule. Probably because it was supplied.
Also, it was considered that the reason why the value was low in the test plot 12 was that, similarly to the test plot 7, the dicyandiamide granules mixed with urea were used. From the above results, it was shown that the use of the granules of the present invention can improve the quality and safety of spinach.
【００３０】[0030]
【表４】 [Table 4]
【００３１】[0031]
【発明の効果】本発明の硝化抑制粒剤、及び該粒剤を配
合した本発明の硝化抑制粒剤配合肥料は、基肥と共に、
若しくは基肥として施用した場合においても、作物の生
育初期にアンモニアによる過剰障害が発生しにくい効果
を有する。The nitrification-inhibiting granules of the present invention, and the nitrification-inhibiting granules-containing fertilizer of the present invention containing the granules, together with the base fertilizer,
Alternatively, even when applied as a base fertilizer, there is an effect that excessive damage due to ammonia hardly occurs in the early stage of growing the crop.
【図１】噴流層のフローシートの図FIG. 1 is a diagram of a flow sheet of a spouted bed.
１．噴流塔 ２．粒剤投入口 ３．排ガス出口 ４．スプレーノズル ５．粒子 ６．ポンプ ７．抜き出し口 ８．熱交換器 ９．オリフィス流量計 １０．ブロアー １１．溶解槽 １２．被膜材料の混合溶解液 Ｔ１．熱風温度 Ｔ２．粒体温度 Ｔ３．排気温度 ＳＬ．スチーム 1. Spout tower 2. 2. Granule inlet Exhaust gas outlet 4. Spray nozzle 5. Particles 6. Pump 7. Outlet 8. Heat exchanger 9. Orifice flow meter 10. Blower 11. Dissolution tank 12. Mixed solution of coating material T1. Hot air temperature T2. Granular temperature T3. Exhaust temperature SL. steam
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ０５Ｃ 3:00 9:00） (72)発明者 阿山 香子 熊本県水俣市築地４番218号──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI C05C 3:00 9:00) (72) Inventor Kako Ayama 4-218 Tsukiji, Minamata City, Kumamoto Prefecture
Claims (12)
て、該粒子の施用からジシアンジアミドの累積溶出率が
該粒子が含有する全ジシアンジアミドの１０重量％に達
するまでの期間（Ｄ１）と、１０重量％を越えて８０重
量％に達するまでの期間（Ｄ２）との比（Ｄ１／Ｄ２）
が０．２以上である硝化抑制粒剤。Claims 1. A particle (D1) containing dicyandiamide, wherein a period from application of the particle until the cumulative elution rate of dicyandiamide reaches 10% by weight of the total dicyandiamide contained in the particle (D1) is 10% by weight. Ratio (D1 / D2) to the period (D2) until it exceeds 80% by weight
Is 0.2 or more.
が被膜材で被覆された請求項１に記載の硝化抑制粒剤。2. The nitrification-suppressing granule according to claim 1, wherein the surface of the particles containing dicyandiamide is coated with a coating material.
記載の硝化抑制粒剤。3. The nitrification-suppressing granule according to claim 1, further comprising a fertilizer component.
請求項３に記載の硝化抑制粒剤。4. The nitrification-suppressing granule according to claim 3, wherein the fertilizer component is an ammonia-based nitrogen fertilizer.
硝化抑制粒剤。5. The nitrification-suppressing granule according to claim 4, wherein the fertilizer component is urea.
載の硝化抑制粒剤と肥料成分とからなる硝化抑制粒剤配
合肥料。6. A nitrification-suppressed granule-containing fertilizer, comprising the nitrification-suppressed granule according to any one of claims 1 to 5 and a fertilizer component.
に溶出速度が制御された緩効性肥料である請求項６に記
載の硝化抑制粒剤配合肥料。7. The nitrification-suppressed granule-containing fertilizer according to claim 6, wherein the fertilizer is a chemically synthesized slow-release fertilizer or a slow-release fertilizer whose dissolution rate is physically controlled.
料が、肥料粒子の表面を被膜材で被覆した被覆粒状肥料
である請求項７に記載の硝化抑制粒剤配合肥料。8. The nitrification-inhibiting granule-containing fertilizer according to claim 7, wherein the slow-release fertilizer whose dissolution rate is physically controlled is a coated granular fertilizer in which the surface of fertilizer particles is coated with a coating material.
化抑制粒剤を用いた作物の栽培方法。9. A method for cultivating a crop using the nitrification-suppressing granules according to claim 1.
化抑制粒剤配合肥料を用いた作物の栽培方法。10. A method for cultivating a crop using the fertilizer containing nitrification-suppressed granules according to any one of claims 6 to 8.
化抑制粒剤を用いたホウレンソウの栽培方法。11. A method for cultivating spinach using the nitrification-inhibiting granules according to any one of claims 1 to 5.
化抑制粒剤配合肥料を用いたホウレンソウの栽培方法。 【０００１】12. A method for cultivating spinach using the fertilizer containing nitrification-suppressed granules according to any one of claims 6 to 8. [0001]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10103973A JPH11278973A (en) | 1998-03-31 | 1998-03-31 | Preventive granular agent for nitration, compound fertilizer containing the same and method for cultivating crop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10103973A JPH11278973A (en) | 1998-03-31 | 1998-03-31 | Preventive granular agent for nitration, compound fertilizer containing the same and method for cultivating crop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11278973A true JPH11278973A (en) | 1999-10-12 |
Family
ID=14368287
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10103973A Pending JPH11278973A (en) | 1998-03-31 | 1998-03-31 | Preventive granular agent for nitration, compound fertilizer containing the same and method for cultivating crop |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11278973A (en) |
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