JP2006342028A - Fertilizer - Google Patents
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- JP2006342028A JP2006342028A JP2005170259A JP2005170259A JP2006342028A JP 2006342028 A JP2006342028 A JP 2006342028A JP 2005170259 A JP2005170259 A JP 2005170259A JP 2005170259 A JP2005170259 A JP 2005170259A JP 2006342028 A JP2006342028 A JP 2006342028A
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Abstract
Description
本発明は肥料に関する。 The present invention relates to a fertilizer.
従来、シアナミド含有溶液からなる液状肥料が提案(特許文献1)されているが、窒素肥効が十分でなかった。一方、腐植酸は植物体の生育に有用な天然由来の高分子有機物であり、リン酸の土壌への固定化防止、根の活力向上、土壌の保肥力向上などの作用を有することが知られているが、肥料取締法による肥料成分としては認定されていない。しかし、腐植酸のこのような長所を利用して腐植酸と苦土分とを混合した腐植酸苦土肥料が市販されている。腐植酸苦土肥料は、例えば亜炭や草炭等の若年炭と硝酸を反応させて腐植酸を人工的に生成させ、それを塩基性マグネシウム含有物質で中和することによって製造されている(特許文献2)。
本発明の目的は、窒素肥効の改善されたシアナミド含有肥料を提供することである。 An object of the present invention is to provide a cyanamide-containing fertilizer having an improved nitrogen fertilization effect.
本発明は、シアナミドと、腐植酸又はその含有物とを含有してなる肥料である。シアナミドの含有率が2〜15質量%、腐植酸又はその含有物の含有率が98〜85質量%であることが好ましい。また、これらの肥料は造粒されていることが好ましい。 The present invention is a fertilizer comprising cyanamide and humic acid or a content thereof. It is preferable that the content of cyanamide is 2 to 15% by mass and the content of humic acid or its content is 98 to 85% by mass. These fertilizers are preferably granulated.
本発明によれば、窒素肥効の改善されたシアナミド含有肥料が提供される。また、造粒することによって、粉立ちの少ない施肥作業の容易な、窒素肥効が更に改善されたシアナミド含有肥料が提供される。 According to the present invention, a cyanamide-containing fertilizer having improved nitrogen fertilization effect is provided. In addition, by granulating, a cyanamide-containing fertilizer with improved nitrogen fertilization effect that is easy for fertilization work with less dusting is provided.
腐植酸(「フミン酸」とも呼ばれている。)又はその含有物としては、天然に産出する天然腐植酸の他に、例えば亜炭、草炭等の若年炭の酸化物ないしは若年炭と硝酸及び/又は硫酸との反応生成物などの腐植酸含有物を例示することができ、これらから選ばれた少なくとも1種が使用される。また、シアナミドとしては、例えば石灰窒素等から抽出されたものが使用される。シアナミドと腐植酸又はその含有物を混合するには、シアナミドはシアナミド水溶液として用いることが望ましく、その濃度は5〜50質量%、特に20〜40質量%であることが好ましい。 Humic acid (also referred to as “humic acid”) or its contents include, in addition to naturally occurring natural humic acid, oxides of young charcoal such as lignite and grass charcoal, or young charcoal and nitric acid and / or Alternatively, humic acid-containing materials such as a reaction product with sulfuric acid can be exemplified, and at least one selected from these can be used. Moreover, as cyanamide, what was extracted from lime nitrogen etc. is used, for example. In order to mix cyanamide and humic acid or a content thereof, it is desirable to use cyanamide as an aqueous cyanamide solution, and its concentration is preferably 5 to 50% by mass, particularly 20 to 40% by mass.
シアナミドと腐植酸又はその含有物の含有率は、シアナミドが2〜15質量%、特に4〜8質量%であることが好ましく、腐植酸又はその含有物が98〜85質量%、特に96〜92質量%であることが好ましい。シアナミドとしてシアナミド水溶液を用いた場合、肥料には水分を含むことになるが、25質量%までの含水率であれば問題ない。肥料を造粒する場合、水分はバインダーとして機能するので、10〜20質量%の含水率はむしろ好ましい。貯蔵安定性等の点から含水が問題であれば乾燥して除去しておく。本発明の肥料には、例えばリン酸、カリウム等の肥料成分を含ませることもできる。 As for the content ratio of cyanamide and humic acid or its content, cyanamide is preferably 2 to 15% by mass, particularly 4 to 8% by mass, and humic acid or its content is preferably 98 to 85% by mass, particularly 96 to 92%. It is preferable that it is mass%. When a cyanamide aqueous solution is used as the cyanamide, the fertilizer contains moisture, but there is no problem if the moisture content is up to 25% by mass. When granulating fertilizer, moisture functions as a binder, so a moisture content of 10-20% by weight is rather preferable. If water content is a problem in terms of storage stability, etc., it is dried and removed. The fertilizer of the present invention may contain fertilizer components such as phosphoric acid and potassium.
本発明の肥料は造粒されていることが好ましい。これによって、窒素肥効が更に改善されたシアナミド含有肥料となる。造粒は、例えば転動造粒法、押し出し造粒法等によって行うことができる。肥料の平均粒径は2〜4mmが好ましい。 The fertilizer of the present invention is preferably granulated. This provides a cyanamide-containing fertilizer with further improved nitrogen fertilization. The granulation can be performed by, for example, a rolling granulation method, an extrusion granulation method, or the like. The average particle size of the fertilizer is preferably 2 to 4 mm.
実施例1
亜炭と硝酸の反応生成物からなる腐植酸含有物を70質量部とシアナミド含有溶液(シアナミド成分の濃度15質量%)30質量部を混合し、腐植酸含有物の含有率が70質量%、シアナミド含有率が4.5質量%、含水率25.5質量%の肥料を製造した。なお、シアナミド含有溶液は、石灰窒素と水を攪拌しながら炭酸ガスを吹き込んでろ過し、ろ液に酢酸を混合してpH5に調製したものを用いた。
Example 1
70 parts by mass of a humic acid-containing product composed of a reaction product of lignite and nitric acid and 30 parts by mass of a cyanamide-containing solution (cyanamide component concentration: 15% by mass) are mixed, and the content of the humic acid-containing product is 70% by mass, cyanamide A fertilizer having a content of 4.5% by mass and a water content of 25.5% by mass was produced. The cyanamide-containing solution used was prepared by adjusting the pH to 5 by mixing the filtrate with acetic acid and blowing carbon dioxide while stirring lime nitrogen and water.
実施例2
実施例1で製造された肥料を傾斜皿形造粒機で造粒し、平均粒径が3.0mm、腐植酸含有物の含有率が75質量%、シアナミド含有率が5質量%、含水率20質量%の造粒肥料を製造した。
Example 2
The fertilizer manufactured in Example 1 was granulated with an inclined dish granulator, the average particle size was 3.0 mm, the content of humic acid-containing material was 75 mass%, the cyanamide content was 5 mass%, and the moisture content 20% by mass of granulated fertilizer was produced.
実施例3
腐植酸含有物のかわりに、中国産の天然腐植酸を用い、平均粒径が3.0mm、腐植酸含有物の含有率が74質量%、シアナミド含有率が7質量%、含水率19質量%の造粒肥料としたこと以外は、実施例2と同様にして肥料を製造した。
Example 3
Instead of humic acid-containing material, Chinese natural humic acid is used, the average particle size is 3.0mm, the content of humic acid-containing material is 74% by mass, cyanamide content is 7% by mass, moisture content is 19% by mass A fertilizer was produced in the same manner as in Example 2 except that the granulated fertilizer was used.
実施例4
腐植酸含有物のかわりに、草炭の空気酸化物を用い、平均粒径が3.0mm、腐植酸含有物の含有率が78質量%、シアナミド含有率が4質量%、含水率18質量%の造粒肥料としたこと以外は、実施例2と同様にして肥料を製造した。
Example 4
Instead of humic acid-containing material, grass charcoal air oxide is used, the average particle size is 3.0 mm, the content of humic acid-containing material is 78% by mass, the cyanamide content is 4% by mass, and the water content is 18% by mass. A fertilizer was produced in the same manner as in Example 2 except that it was a granulated fertilizer.
比較例1
シアナミド濃度が15質量%であるシアナミド水溶液を肥料とした。
Comparative Example 1
A cyanamide aqueous solution having a cyanamide concentration of 15% by mass was used as a fertilizer.
淡色黒ボク土を450g、上記肥料を窒素成分として100mg相当分、過リン酸石灰を0.5g及び塩化カリウムを0.2gからなる栽培土を鉢に入れ、直ちに20粒のコマツナを播種し、28日間栽培を行い、発芽率(播種した種子の中で発芽した割合)、地上部の重さ(地上部の葉茎の重さ)、薬害の有無(葉の外観で判断)を測定した。それらの結果を表1に示す。なお、薬害の有無は、目視観察によって、0:斑点・枯死全くない、1:斑点・脱色が認められた、2:葉のふちが枯れた、3:枯死、の4段階評価を行い、それらの平均点で評価した。 450 g of light-colored black soil, equivalent to 100 mg of the above fertilizer as a nitrogen component, cultivated soil consisting of 0.5 g of superphosphate and 0.2 g of potassium chloride is put in a pot and immediately seeded with 20 komatsuna. Cultivation was carried out for 28 days, and the germination rate (rate of germination among the sown seeds), the weight of the above-ground part (the weight of the leaf stem of the above-ground part), and the presence or absence of chemical damage (determined by the appearance of the leaves) were measured. The results are shown in Table 1. In addition, the presence or absence of phytotoxicity was evaluated by four-stage evaluation by visual observation: 0: no spots / dead at all, 1: spotted / bleeded, 2: leaf edge withered, 3: dead, The average score was evaluated.
実施例と比較例の対比から、本発明の肥料によれば、施肥直後に播種・定植を行っても、発芽率が悪化せず、さらに栽培期間中に斑点や枯死といった薬害が発生せずにコマツナの栽培ができた。また、実施例1と実施例2の対比から、肥料を造粒することによって、より地上部の重さが重くなり、肥効性が更に大きい肥料となった。 From the comparison between Examples and Comparative Examples, according to the fertilizer of the present invention, even when sowing and planting immediately after fertilization, the germination rate does not deteriorate, and further, no phytotoxicity such as spots or withering occurs during the cultivation period. Komatsuna was cultivated. Moreover, from comparison of Example 1 and Example 2, by granulating the fertilizer, the weight of the above-ground part became heavier and it became a fertilizer with still greater fertilizer effect.
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JP2005170259A JP2006342028A (en) | 2005-06-10 | 2005-06-10 | Fertilizer |
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JP2005170259A JP2006342028A (en) | 2005-06-10 | 2005-06-10 | Fertilizer |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019187349A (en) * | 2018-04-27 | 2019-10-31 | デンカ株式会社 | Withered seashore prevention material |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2019187349A (en) * | 2018-04-27 | 2019-10-31 | デンカ株式会社 | Withered seashore prevention material |
JP7065684B2 (en) | 2018-04-27 | 2022-05-12 | デンカ株式会社 | Rocky-shore shore prevention material |
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