JPH0841460A - Agricultural material and production thereof - Google Patents
Agricultural material and production thereofInfo
- Publication number
- JPH0841460A JPH0841460A JP6196256A JP19625694A JPH0841460A JP H0841460 A JPH0841460 A JP H0841460A JP 6196256 A JP6196256 A JP 6196256A JP 19625694 A JP19625694 A JP 19625694A JP H0841460 A JPH0841460 A JP H0841460A
- Authority
- JP
- Japan
- Prior art keywords
- soil
- water
- lime
- soluble polymer
- treated
- 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
Landscapes
- Cultivation Of Plants (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、建設発生土等を利用し
た農業用資材に関するものであり、詳しくは建設および
土木工事等に伴って発生する建設発生土など（以下、
「残土」という）を土質改良し、園芸・植栽等の農業用
資材として再利用することに関するものである。なお、
本願において農業用とは、狭義の農業のみならず、園
芸、林業、造園業、公園・道路建設、宅地の造成等を含
む土地の造成業などを含む広義の用途を意味する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural material using construction soil, etc., and more specifically, construction soil such as construction soil (hereinafter referred to as "construction soil")
"Remaining soil") is used for soil improvement and reuse as agricultural material for gardening and planting. In addition,
In the present application, the term "agricultural use" means not only agriculture in a narrow sense, but also a broad sense of use including horticulture, forestry, landscaping, park / road construction, land development including residential land development, and the like.
【０００２】[0002]
【従来の技術】従来、各地で発生した残土の大部分は、
再利用できず埋立て処分したり他の場所へ搬出したりし
ているが、環境への影響が問題となってきている。この
ような状況下、近年処理量は多くないが、残土の石灰処
理によるプラントでの再生利用が試みられられてきてい
る。これは、道路工事の場合、掘り起こした現場の埋め
戻しには、砂が用いられていたが、その為には他の場所
より山砂を持ってこなければならず、こちらでも環境破
壊の問題が起こるので、プラントで石灰処理した再生土
を埋め戻しの砂の代わりに用いようとするためである。2. Description of the Related Art Conventionally, most of the soil left in various places is
Although it cannot be reused and is disposed of in landfills or taken out to other places, its impact on the environment is becoming a problem. Under such circumstances, although the treatment amount is not so large in recent years, it has been attempted to recycle the residual soil in the plant by lime treatment. This is because in the case of road construction, sand was used to backfill the excavated site, but for that reason, mountain sand had to be brought in from other places, which also caused environmental damage. This is because the reclaimed soil treated with lime at the plant will be used instead of the backfilled sand as it happens.
【０００３】しかしながら、このようなプラントは、含
水比の低い良質な建設発生土のみを対象とするため、広
大な敷地で天日乾燥して含水比を低くした土を生石灰に
より改質し、再生土としているので、実際の現場での適
用にはかなりの制約があった。また、このようなプラン
トで製造した生石灰処理による改良土は、雨がかかると
柔らかくなるため他の用途への使用も期待できなかっ
た。本発明者は、先に建設発生土等の残土を天日乾燥せ
ず、特定の改質剤を用いてプラントで改質し、砂のよう
な流動生を持つ改良土とする方法を提案した（特開平４
−３４５６８５）。However, since such a plant is intended only for high-quality construction soil having a low water content, it is dried on the vast site in the sun and the soil having a low water content is modified with quicklime to regenerate it. Since it is soil, there were considerable restrictions on actual application in the field. Further, the improved soil produced by the quick lime treatment produced in such a plant becomes soft when exposed to rain, so that it cannot be expected to be used for other purposes. The present inventor has previously proposed a method in which the residual soil such as construction-generated soil is not dried in the sun, and is modified in a plant by using a specific modifier to obtain improved soil having sand-like fluidity. (JP-A-4
-345685).
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記の方法
で製造された改良土の透水性、適度な硬さ等の特性を生
かした利用、とくに農業分野での新たな使用法を提供す
るものである。DISCLOSURE OF THE INVENTION The present invention provides a use of the improved soil produced by the above-mentioned method, which takes advantage of its properties such as water permeability and appropriate hardness, and particularly a new use method in the agricultural field. It is a thing.
【０００５】[0005]
【課題を解決するための手段】本発明者は、建設発生土
等の残土の再利用を促進すべく、上記の方法で製造され
た改良土の物性を活かした用途につき鋭意検討した結
果、本発明に到達した。即ち、本発明は、含水土壌に水
溶性高分子を添加して粒状化後、石灰で処理した再生土
から成る園芸・植栽用資材及び土壌のｐＨ調整用資材並
びに含水土壌に水溶性高分子を添加して粒状化し、次い
で粒径１ｍｍ以下の石灰粉で処理し該粒子の表面に均一
に分散させることよりなるこれら資材の製造方法を要旨
とするものである。Means for Solving the Problems In order to promote the reuse of the residual soil such as the soil generated from the construction, the present inventor has diligently studied the use of the improved soil produced by the above method, The invention was reached. That is, the present invention is a horticultural / planting material consisting of reclaimed soil treated with lime after adding a water-soluble polymer to a water-containing soil and granulating it, and a material for adjusting the pH of the soil, and a water-soluble polymer in a water-containing soil. The gist of the present invention is to provide a method for producing these materials, which comprises granulating the particles by adding, and then treating the particles with lime powder having a particle size of 1 mm or less and uniformly dispersing the particles on the surface of the particles.
【０００６】以下、本発明を詳細に説明する。本発明の
農業用資材は、残土のような含水土壌に水溶性高分子を
添加して粒状化したものを、更に石灰等で処理した再生
土から構成されるものである。この再生土の製造法とし
ては、特開平４−３４５６８５に記載されている方法を
用いることができるが、たとえば、次のようにして製造
される。まず建設発生土と水溶性高分子を混合機で混合
して粒状化する。次に生成した粒状化物を石灰等の固化
材で処理するが、通常は固化材を添加混合して粒状のま
まで固化処理し再生土とする。再生土はその改良された
特性を十分発揮するためには、通常２〜３日養生した後
に使用に供するのが好ましい。使用する混合機は、混合
効率が良ければ特に制限されないが、水溶性高分子の混
合には混合と造粒機能を有する二軸混合機で２０秒間以
上混合するのが好ましい。後段の石灰等の固化材の混合
機は、機種は問わないが、前段で粒状化した粒子の表面
に固化材が均一に分散付着するのが好ましいので、例え
ば、前段の二軸混合機と同様なものが使用される。粒子
表面に付着した石灰等の固化材は養生中に水分を吸収し
水酸化カルシウムとなりながら内部に浸透固化するが、
表面に近い程石灰分が多くなるので強度が高く、粒子は
長期に亘り安定になる。The present invention will be described in detail below. The agricultural material of the present invention is composed of reclaimed soil obtained by adding a water-soluble polymer to a water-containing soil such as residual soil and granulating it, and further treating it with lime or the like. As the method for producing this reclaimed soil, the method described in JP-A-4-345685 can be used. For example, it is produced as follows. First, the construction soil and the water-soluble polymer are mixed with a mixer to granulate. Next, the generated granules are treated with a solidifying material such as lime. Usually, the solidifying material is added and mixed, and solidified in the granular form to obtain recycled soil. In order to sufficiently exhibit the improved properties of the reclaimed soil, it is usually preferable to use it after curing for 2 to 3 days. The mixer to be used is not particularly limited as long as the mixing efficiency is good, but it is preferable to mix the water-soluble polymer with a twin-screw mixer having mixing and granulating functions for 20 seconds or more. The mixer of the solidifying material such as lime in the latter stage may be of any model, but it is preferable that the solidifying material is uniformly dispersed and adhered to the surface of the particles granulated in the former stage, for example, the same as the twin screw mixer in the former stage. Used. The solidifying material such as lime adhering to the particle surface absorbs water during curing and becomes calcium hydroxide to penetrate and solidify inside,
The closer it is to the surface, the higher the lime content, so the strength is high, and the particles are stable for a long period of time.
【０００７】再生土の製造に使用する水溶性高分子とし
ては、含水土壌を団粒化する機能を有する水溶性の高分
子であれば使用することが出来る。ここで、水溶性高分
子とは、通常、少なくとも１００mlの水に１ｇ以上溶解
する高分子を意味しており、このような機能を有する高
分子は、通常、親水性基としてカルボキシル基を有する
ものである。具体的には、アラビアガム、カラヤガム、
トラガントガム、アルギン酸塩類などの天然の酸性多糖
類、カルボキシメチルセルロース、カルボキシメチルハ
イドロキシエチルセルロースなどの半合成の水溶性高分
子物質や、グアーガム、ローカストビーンガムなどの中
性多糖類の変性物が挙げられる。As the water-soluble polymer used for producing the reclaimed soil, any water-soluble polymer having a function of aggregating the hydrous soil can be used. Here, the water-soluble polymer usually means a polymer that dissolves in 1 g or more in at least 100 ml of water, and a polymer having such a function usually has a carboxyl group as a hydrophilic group. Is. Specifically, gum arabic, karaya gum,
Examples include natural acidic polysaccharides such as tragacanth gum and alginates, semi-synthetic water-soluble polymer substances such as carboxymethyl cellulose and carboxymethyl hydroxyethyl cellulose, and modified products of neutral polysaccharides such as guar gum and locust bean gum.
【０００８】また、合成の水溶性高分子としては、（メ
タ）アクリル酸またはその塩を含有する（メタ）アクリ
ルアミド系重合体、マレイン酸またはその塩と酢酸ビニ
ルとの共重合体、イタコン酸またはその塩と（メタ）ア
クリルアミドとの共重合体などが挙げられ、好ましくは
（メタ）アクリル酸またはその塩を含有する（メタ）ア
クリルアミド系重合体である。（メタ）アクリル酸また
はその塩を含有するアクリルアミド系重合体としては、
（メタ）アクリル酸またはその塩と（メタ）アクリルア
ミドを共重合したもののほか、（メタ）アクリルアミド
を部分加水分解したものでもよく、更には以上に示した
ような単量体を組み合わせて共重合したものでもよい。Further, as the synthetic water-soluble polymer, a (meth) acrylamide polymer containing (meth) acrylic acid or a salt thereof, a copolymer of maleic acid or a salt thereof and vinyl acetate, itaconic acid or Examples thereof include a copolymer of the salt and (meth) acrylamide, and a (meth) acrylamide-based polymer containing (meth) acrylic acid or a salt thereof is preferable. As the acrylamide polymer containing (meth) acrylic acid or a salt thereof,
In addition to a copolymer of (meth) acrylic acid or a salt thereof and (meth) acrylamide, a partially hydrolyzed product of (meth) acrylamide may be used, and further, the above monomers are combined and copolymerized. It may be one.
【０００９】塩の種類としては、例えばナトリウム、カ
リウムなどのアルカリ金属の塩、カルシウム、マグネシ
ウムなどのアルカリ土類金属の塩、アンモニウム塩、炭
素数１〜１８のアルキルアミン、アルカノールアミンな
どのアミン塩、およびこれら２種以上の混合物がある
が、好ましくはアルカリ金属の塩である。上記のような
合成の水溶性重合体の場合、重合体を構成する全単量体
のうち、カルボキシル基を有する単量体が、通常１〜８
０モル％、好ましくは５〜６０モル％含まれる。また、
カルボキシル基は、遊離酸または塩の形のどちらで存在
していてもよい。Examples of salts include salts of alkali metals such as sodium and potassium, salts of alkaline earth metals such as calcium and magnesium, ammonium salts, amine salts such as alkylamines having 1 to 18 carbon atoms and alkanolamines. , And a mixture of two or more thereof, but an alkali metal salt is preferable. In the case of the synthetic water-soluble polymer as described above, the monomer having a carboxyl group is usually 1 to 8 among all the monomers constituting the polymer.
It is contained in an amount of 0 mol%, preferably 5 to 60 mol%. Also,
The carboxyl group may be present in either free acid or salt form.
【００１０】水溶性高分子は、原料となる建設発生土等
が団粒化すればその添加形態は問わないが、通常の発生
土は含水比が高いので、粉末で添加し、平均粒径０．４
ｍｍ以下のカルボキシル基含有水溶性重合体粉末を用い
るのが好ましい。被処理土壌の水分含有比が少ない場合
は、高分子物質を水溶液として添加しても良い。水溶性
高分子の添加量は、被処理土壌の状態によっても異なる
が、通常、被処理土壌に対して０．０１〜１重量％、好
ましくは、０．０２〜０．５重量％である。なお、原料
土の含水比が著しく低い場合には、水を添加して含水比
を調整してもよい。The water-soluble polymer may be added in any form as long as the construction soil generated as a raw material is aggregated. However, since the water content of ordinary soil is high, the water-soluble polymer is added as a powder and the average particle size is 0. .4
It is preferable to use a carboxyl group-containing water-soluble polymer powder having a size of mm or less. When the water content ratio of the treated soil is low, the polymer substance may be added as an aqueous solution. The amount of the water-soluble polymer added varies depending on the condition of the treated soil, but is usually 0.01 to 1% by weight, preferably 0.02 to 0.5% by weight, relative to the treated soil. When the water content of the raw material soil is extremely low, water may be added to adjust the water content.
【００１１】再生土の製造に使用される石灰の固化材
は、その前段工程で粒状化された土壌粒子の表面に均一
に付着するのが好ましく、従って、粒径１ｍｍ以下の粉
末状の石灰を用いるのが望ましい。本発明では、固化後
の再生土は長期に渡って粒状が保持されるのがのぞまし
く、固化材としての石灰には、酸化カルシウム、水酸化
カルシウムを主成分として含むもので、具体的には生石
灰、消石灰、水硬性セメント、石灰系改良材、セメント
系改良材等を包含する。実際にプラントで使用するに
は、脱水及び硬化反応の速い生石灰系の粉末が望まし
い。生石灰等の固化材の添加量は、被処理土壌に対して
０．２〜１０重量％であり、好ましくは１〜５重量％で
ある。得られた再生土は、その使用目的等により必要に
応じて篩分し、２〜３日養生した後、それぞれの資材と
して使用に供する。The solidifying material for lime used for the production of reclaimed soil preferably adheres evenly to the surface of the soil particles granulated in the preceding step, and therefore powdered lime having a particle size of 1 mm or less is used. It is desirable to use. In the present invention, it is desirable that the regenerated soil after solidification is retained in the granular form for a long period of time, and lime as the solidifying material contains calcium oxide and calcium hydroxide as the main components. Includes quick lime, slaked lime, hydraulic cement, lime-based improver, cement-based improver and the like. For practical use in a plant, a quicklime-based powder having a fast dehydration and hardening reaction is desirable. The amount of the solidifying material such as quick lime added is 0.2 to 10% by weight, preferably 1 to 5% by weight, with respect to the treated soil. The obtained reclaimed soil is sieved as needed according to the purpose of use, cured for 2 to 3 days, and then used as respective materials.
【００１２】本発明の園芸・植栽用資材及びｐＨ調整用
資材等の農業用資材は、このようにして得られた再生土
を主体として構成される。しかしながら、その用途によ
っては各種の添加剤を併用し、さらに改良することもで
きる。たとえば、鶏糞、牛糞等の有機肥料などを原料土
に添加した再生土は、粒子が石灰等の固化材で硬化され
ているので、肥料分の溶出が遅く長期にわたって施肥効
果を奏することが出来る。その他、原料土壌には山砂は
勿論、高吸水性樹脂や石膏等を併用して土壌の改良効果
を調整してもよい。Agricultural materials such as horticultural and planting materials and pH adjusting materials of the present invention are mainly composed of the reclaimed soil thus obtained. However, depending on the application, various additives may be used in combination for further improvement. For example, regenerated soil obtained by adding organic fertilizer such as chicken manure and cow manure to the raw material soil has particles hardened by a solidifying material such as lime, so that the fertilizer component is slowly eluted and a fertilizing effect can be exerted for a long time. In addition, the soil improvement effect may be adjusted by using not only mountain sand but also super absorbent resin, gypsum and the like in the raw material soil.
【００１３】本発明の園芸・植栽用資材は、施用した場
合、粒状化工程で使用した水溶性高分子、例えば、アク
リルアミドとアクリル酸塩の共重合体は、石灰等の固化
材によりアミド基が次第に加水分解して植物の養分であ
るアンモニアを放出するので好適である。また、共重合
体はポリアクリル酸となり、石灰等のカルシウムと反応
して安定化し透水性が保持される。また、徐々に空気中
の炭酸ガスを吸収して溶解度の低い炭酸カルシウムとな
るので、溶出による植物の根への影響は非常に少なくな
り、浸出水も中性化してくる。又、球状のため根とアル
カリとの接触面が非常に少なくなる。更に、本発明の資
材は透水性が良好であり、通気性に優れるため植物の根
腐れが防止でき、植物の育成に優れている。The horticultural / planting material of the present invention, when applied, is a water-soluble polymer used in the granulating step, for example, a copolymer of acrylamide and acrylate is an amide group by a solidifying material such as lime. Is preferable because it gradually hydrolyzes to release ammonia, which is a nutrient of the plant. Further, the copolymer becomes polyacrylic acid, which reacts with calcium such as lime and is stabilized to maintain water permeability. Moreover, since the carbon dioxide in the air is gradually absorbed to form calcium carbonate having a low solubility, the influence of the elution on the roots of the plant is very small, and the leachate is also neutralized. Also, because of the spherical shape, the contact surface between the root and the alkali is extremely reduced. Further, the material of the present invention has good water permeability and excellent air permeability, so that root rot of plants can be prevented and plant growth is excellent.
【００１４】本発明のｐＨ調節用の資材は粒状であり、
アルカリ性ではあるが粒子表面に露出した石灰分は少な
いので、施用時に粉塵の飛散がなく取扱いが容易である
のは勿論、添加し過ぎてｐＨが極端にたかくなることは
なく、添加量の微調整は不要となる。更に、アルカリ分
の溶出速度が遅くなるため、長期に渡って中和剤として
の効果を発揮するとともに、土中のカルシウム分が多く
なる。そして、化学肥料、例えば、硫安を使用した場
合、硫酸根が土中または再生土のカルシウムと徐々に反
応し、対塩のアンモニアが発生しやすくなるので、化学
肥料の施肥効果を助長させることができる。The material for pH adjustment of the present invention is granular,
Although it is alkaline, the amount of lime exposed on the particle surface is small, so it is easy to handle because there is no scattering of dust during application, and the pH is not excessively increased by adding too much. Is unnecessary. Furthermore, since the elution rate of the alkali content becomes slow, the effect as a neutralizing agent is exerted for a long period of time, and the calcium content in the soil increases. When using a chemical fertilizer, for example, ammonium sulfate, sulfate radicals gradually react with calcium in soil or reclaimed soil, and ammonia as a salt is likely to be generated, which can promote the fertilizer application effect. it can.
【００１５】本発明の資材を実際に使用する場合、建設
発生土をプラントで再生土にして使用する方法の他、発
生現場で再生土にして使用することもできる。例えば、
植栽前の畑地等の耕運時に再生土からなる本発明の資材
を散布し、土壌に混合するのが好ましいが、場合によっ
ては肥料のように、直接作物の間に散布することもでき
る。また、発生現場で発生土を再生土とする場合は、水
溶性高分子を造成地等の被処理地表に直接散布し、また
は、散布しながら耕運機やスタビライザー、場合により
バックホウ等で充分に混合して団粒化したところで、再
度石灰等を散布、混合する。団粒化が良ければ石灰等の
混合は、より簡単でよい。団粒化した再生土の強度を充
分だすために、１日以上、望ましくは２〜３日間静置し
て養生した後、植栽を行うのが好ましい。なお、場合に
より再生土の表面に微量の石灰等が付着していることが
あるので、植栽時に充分散水を行うのが望ましい。本発
明の資材をｐＨ調整に用いる場合、その添加量は特に制
限されないが、通常、１ｍ3当たり５〜２００Ｋｇ添加
される。In the case of actually using the material of the present invention, it is possible to use the regenerated soil at the site of generation as well as the regenerated soil at the plant as well as the method of using the regenerated soil at the plant. For example,
It is preferable that the material of the present invention composed of regenerated soil is sprayed and mixed with the soil at the time of cultivating a field before planting, but in some cases, it can be sprayed directly between crops like fertilizer. When the generated soil is to be regenerated at the generation site, the water-soluble polymer is sprayed directly on the surface of the treated land such as a land preparation site, or while being sprayed, it is thoroughly mixed with a cultivator, stabilizer, or backhoe in some cases. After lumping into granules, lime or the like is sprayed again and mixed. Mixing of lime etc. may be easier if the agglomeration is good. In order to obtain sufficient strength of the aggregated reclaimed soil, it is preferable to plant it after curing by allowing it to stand for one day or more, preferably 2-3 days. It should be noted that, in some cases, a small amount of lime or the like may be attached to the surface of the reclaimed soil, so it is desirable to perform the filling / dispersing water during planting. When the material of the present invention is used for pH adjustment, its addition amount is not particularly limited, but usually 5 to 200 kg per 1 m 3 is added.
【００１６】本発明の園芸・植栽用資材が使用可能な被
植栽植物としては、銀杏、欅などの高木は勿論、キョウ
チクトウ、クチナシなどの低木や、酸性土壌を好む椿、
ツツジ、サツキなども適用でき、更にはサルビア、ベゴ
ニアなどの一般的は草花が挙げられる。また、家庭用の
園芸土としてそのまま使用することも出来、バーミキュ
ライト或いはピートモスや赤玉土などと混合するなど併
用してもよい。本発明の園芸・植栽用資材を用いた地盤
は、雨水等によっても浸出水は濁らず長期に渡って団粒
構造を維持する。Examples of plants to be planted for which the horticultural and planting material of the present invention can be used include tall trees such as ginkgo and keyaki, as well as shrubs such as oleander and gardenia, and camellias that prefer acidic soil,
Azalea, Satsuki, etc. are also applicable, and general flowers such as Salvia and Begonia can be mentioned. Further, it can be used as it is as horticultural soil for home use, or may be used in combination with vermiculite, peat moss, or red tama soil. The ground using the horticultural / planting material of the present invention maintains the aggregate structure for a long period of time without the leaching water becoming turbid even by rainwater or the like.
【００１７】本発明の農業用資材は、従来建設発生土の
生石灰処理法によりプラントで製造されていた再生土の
主たる用途である道路工事の埋設管の埋め戻しに使用で
きる他、園芸・植栽土壌として非常にすぐれている。し
たがって、本発明の資材を用いれば、植栽のための透水
性材料や覆土を購入する必要がなく、再生土をそのまま
道路の法面の植栽や公園の植栽部分等に広く利用するこ
とができ、覆土も表面が乾かない程度にまで低減するこ
とができる。又、砂よりも透水性が良いので水はけが抜
群である。さらに、田畑などの農耕地ではｐＨ調整を兼
ねた土壌改良材として非常に有用である。The agricultural material of the present invention can be used for backfilling of buried pipes for road construction, which is the main purpose of reclaimed soil that has been conventionally produced in a plant by a quick lime treatment method for soil generated from construction, and for gardening and planting. Very good soil. Therefore, if the material of the present invention is used, it is not necessary to purchase a water-permeable material or cover soil for planting, and the reclaimed soil can be widely used as it is for road slope planting, park planting, etc. It is also possible to reduce the soil cover to the extent that the surface does not dry. In addition, because it has better water permeability than sand, it has excellent drainage. Further, it is very useful as a soil improving material that also serves as pH adjustment in agricultural fields such as fields.
【００１８】[0018]
【実施例】以下、本発明を実施例により更に具体的に説
明するが、本発明はその要旨を超えない限り、以下の実
施例に限定されるものではない。EXAMPLES The present invention will be described in more detail below with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof.
【００１９】実施例１及び比較例１〜２ 含水比８９％の関東ローム（採取地：八王子市南大沢）
の原料土を、容量が２０リットルのホバート型ミキサー
に６Ｋｇとり、アクリルアミドとアクリル酸ナトリウム
の共重合体（アニオン化率：１５．６mol%）粉末６ｇ
（原料土に対し０．１重量％）を表面に散布した。３７
ｒｐｍで６０秒間攪伴し平均粒径が約２〜３ｍｍの粒状
物を得た。攪伴を止め、生石灰を１８０ｇ（原料土に対
し３重量％）添加し、３０秒間攪伴した後取り出してポ
リ袋に入れ、３日間密閉養生し、園芸・植栽用土とし
た。直径３０ｃｍの素焼きの植木鉢に６０メッシュの金
網を敷き、その中を上記方法で得た園芸・植栽用土で満
たした。比較のために、植木鉢に原料土をそのまま満た
したもの（比較例１）及び生石灰のみを３重量％混合し
て得た土を満たしたもの（比較例２）を用意した。次
に、サルビア苗を購入し、付着している土を水道水で洗
浄して全て取り除き、各々２鉢ずつ植栽した。植栽後、
毎日１回散水し、定期的に成長を観察した。その結果を
表−１にしめした。なお、肥料は全く与えなかった。Example 1 and Comparative Examples 1-2 Kanto loam with a water content of 89% (collection site: Minami-Osawa, Hachioji City)
6 kg of the raw material soil in a Hobart-type mixer with a capacity of 20 liters, and 6 g of a powder of a copolymer of acrylamide and sodium acrylate (anionization rate: 15.6 mol%)
(0.1% by weight with respect to the raw material soil) was sprayed on the surface. 37
The mixture was stirred at rpm for 60 seconds to obtain granules having an average particle size of about 2 to 3 mm. The stirring was stopped, and 180 g of quicklime (3% by weight based on the raw material soil) was added, stirred for 30 seconds, taken out, put in a plastic bag, and sealed and cured for 3 days to obtain a gardening / planting soil. A 60-mesh wire net was laid in a 30 cm diameter unglazed flower pot, and the soil was filled with the gardening / planting soil obtained by the above method. For comparison, a flower pot was filled with raw soil as it was (Comparative Example 1) and a pot was filled with soil obtained by mixing only 3% by weight of quicklime (Comparative Example 2). Next, salvia seedlings were purchased, the attached soil was washed with tap water to remove all, and two pots each were planted. After planting
Water was sprinkled once daily and growth was observed regularly. The results are shown in Table 1. No fertilizer was given.
【００２０】[0020]
【表１】 [Table 1]
【００２１】原料土及び生石灰単独処理による改良土の
場合に比べ、本発明の園芸・植栽用土は、植物の成長が
良く、１カ月後の根の観察でも非常に細かい根が密に成
長しており園芸土壌として優れていることが明らかであ
る。他方、原料土及び生石灰単独処理土の場合は、通気
性が低いため素焼部分にのみ根が張る傾向であった。Compared with the case of the raw material soil and the improved soil obtained by treatment with lime alone, the horticultural / planting soil of the present invention has a better plant growth, and even after 1 month of observation, very fine roots grow densely. It is clear that it is excellent as a horticultural soil. On the other hand, in the case of the raw material soil and the soil treated with quick lime alone, the air permeability was low and the root tended to grow only in the unglazed portion.
【００２２】実施例２及び比較例３〜４ 実施例１で製造した園芸・植栽用土を用い、サルビア苗
の代わりにベゴニア苗を使用した以外は同様にして植栽
試験を行った。その結果を表−２に示す。なお、比較例
３及び４は、各々、比較例１及び２と同様に原料土及び
生石灰３重量％処理土を使用した場合の結果である。こ
の結果、本発明の園芸・植栽用土はベゴニアなどの草花
の園芸土壌としても優れていることが判る。Example 2 and Comparative Examples 3 to 4 A planting test was carried out in the same manner except that the gardening / planting soil produced in Example 1 was used, and that begonia seedlings were used instead of salvia seedlings. The results are shown in Table-2. Comparative Examples 3 and 4 are the results when the raw material soil and quicklime 3% by weight treated soil were used, as in Comparative Examples 1 and 2, respectively. As a result, it is understood that the horticultural / planting soil of the present invention is excellent as a horticultural soil for flowers such as begonia.
【００２３】[0023]
【表２】 [Table 2]
【００２４】実施例３〜５及び比較例５〜１０ ３０ｔ／ｈの製造規模のプラントを用い、実施例１に準
じた方法で粒径６ｍｍ以下（６ｍｍの篩を通ったもの）
の粒状の再生土を得た。この再生土を用いて実施例１と
同様にして植栽試験を行った。植物は、ややアルカリに
強いキョウチクトウ、ややアルカリに弱いクチナシ、ア
ルカリに弱い（酸性土を好む）サツキを用いた。その試
験結果をまとめて表−３に示す。本発明の再生土を用い
た場合は、原料土を使用した比較例５、７、９の場合に
比べ、キョウチクトウ、クチナシは勿論、酸性土壌を好
むサツキでも枯れることなく成長が早く、いずれも根が
鉢全体に密に張っていた。これに対し、石灰処理土（比
較例６、８、１０）は、通気性、透水性が悪いためキョ
ウチクトウ、クチナシの成長が悪く、根も鉢の素焼部分
に張る傾向があった。また、石灰処理土ではサツキが枯
死した。Examples 3 to 5 and Comparative Examples 5 to 10 Using a plant having a production scale of 30 t / h, the method according to Example 1 was used, and the particle size was 6 mm or less (passed through a 6 mm sieve).
A granular reclaimed soil was obtained. A planting test was conducted using this regenerated soil in the same manner as in Example 1. As the plants, Oleander that is slightly alkaline resistant, gardenia that is slightly alkaline resistant, and Satsuki that is alkaline weak (prefers acidic soil) were used. The test results are summarized in Table-3. When the reclaimed soil of the present invention is used, compared with the cases of Comparative Examples 5, 7, and 9 in which the raw material soil is used, not only oleander and gardenia but also Satsuki, which prefers acidic soil, grows fast without dying, and roots Was tightly spread over the pot. On the other hand, the lime-treated soil (Comparative Examples 6, 8 and 10) had poor air permeability and water permeability, so that the growth of oleander and gardenia was poor, and the roots tended to stick to the unglazed portion of the pot. Moreover, Satsuki died in the lime-treated soil.
【００２５】[0025]
【表３】 [Table 3]
【００２６】実施例６ 実施例３で製造した再生土を用いて、八王子市のマンシ
ョン建設現場の花壇部においてサツキの植栽試験を行っ
た。地表より６０ｃｍの深さまで堀下げて本発明の再生
度と置き換えた。樹高が約１５ｃｍのサツキを３００本
植栽した。植栽後、５カ月経過したが枯死は全く無く成
長も良好であった。Example 6 Using the reclaimed soil produced in Example 3, a planting test of Satsuki was conducted at the flower bed of a condominium construction site in Hachioji City. It was dug down to a depth of 60 cm from the surface of the earth and replaced with the regeneration degree of the present invention. 300 Satsuki trees with a height of about 15 cm were planted. Five months after the planting, there was no death and the growth was good.
【００２７】比較例１１ 原料土を用いた以外は、実施例６と同様にしてサツキの
植栽試験を行った結果、枯死は無かったが、実施例６の
場合と比べ明かに成長が悪かった。Comparative Example 11 As a result of carrying out a planting test of Satsuki in the same manner as in Example 6 except that the raw material soil was used, there was no mortality, but the growth was clearly poorer than in the case of Example 6. .
【００２８】比較例１２ 石灰処理土を用いた以外は、実施例６と同様にしてサツ
キ５０本を植栽した結果、１８本が枯死した。また、残
りも成長が非常に悪く、再度、再生土に入れ換えて植栽
し直した。Comparative Example 12 As a result of planting 50 Satsuki trees in the same manner as in Example 6 except that lime-treated soil was used, 18 trees died. The rest of the plants also grew very poorly, so they were replaced with reclaimed soil and planted again.
【００２９】実施例９ 幅１ｍ，長さ２ｍ、深さ０．５ｍのポットを用い、畑の
土（ｐＨ５．８）に実施例７で製造した再生土を１０重
量％混合したものを、ポットに４５ｃｍの深さまで入れ
て植栽試験を行った。化成肥料（商品名：くみあい化成
７号）を２００ｇ施し、玉葱の苗４８本を４行１２列で
植えた。４カ月後に、更に化成肥料を玉葱の間に１００
ｇ散布した。７カ月後に収穫したところ、玉葱の大きさ
は、直径１０〜１０．５ｃｍで高さが約８ｃｍで良く揃
っており、収穫量は１４．８Ｋｇであった。また、使用
した土壌を脱塩水で１０重量％スラリーとし、その抽出
液のｐＨを測定したところ、初期のｐＨは７．３であ
り、７カ月後のｐＨは７．２であった。Example 9 A pot having a width of 1 m, a length of 2 m and a depth of 0.5 m was used, and 10% by weight of the regenerated soil produced in Example 7 was mixed with the soil (pH 5.8) of the field. The planting test was performed by putting the plant up to a depth of 45 cm. 200g of chemical fertilizer (trade name: Kumiai Kasei No. 7) was applied, and 48 onion seedlings were planted in 4 rows and 12 columns. Four months later, 100 more chemical fertilizers were added during the onion.
g was sprayed. When it was harvested after 7 months, the size of the onion was 10 to 10.5 cm in diameter and about 8 cm in height, which were well aligned, and the harvest amount was 14.8 Kg. Moreover, when the used soil was made into 10 wt% slurry with demineralized water and the pH of the extract was measured, the initial pH was 7.3 and the pH after 7 months was 7.2.
【００３０】比較例１５ 実施例９において使用した再生土の代わりに消石灰を土
に対して０．３重量％混合した改良土を使用した以外は
同様にして、玉葱の栽培試験を行った。収穫した玉葱の
大きさは、直径６．５〜１０ｃｍとやや不揃いであり、
収穫量は１１．９Ｋｇであった。また、同様にｐＨを測
定したところ、土壌の初期のｐＨは７．２であったが、
７カ月後はｐＨ６．５までさがっていた。このように、
本発明の再生土からなるｐＨ調整剤は、従来の石灰中和
したものに比べｐＨの持続性があり、施肥効果を助長さ
せるため、収穫量が増加していることが判る。また、玉
葱の大きさが揃うのは、ｐＨ調整剤が粒状のため、土壌
と均等に混合されているためと考えられる。Comparative Example 15 The onion cultivation test was conducted in the same manner except that the regenerated soil used in Example 9 was replaced with the improved soil in which 0.3% by weight of slaked lime was mixed with the soil. The size of the harvested onion is somewhat uneven with a diameter of 6.5-10 cm,
The yield was 11.9 Kg. Also, when the pH was measured in the same manner, the initial pH of the soil was 7.2,
After 7 months, the pH had dropped to 6.5. in this way,
It can be seen that the pH adjuster composed of the reclaimed soil of the present invention has a longer pH than the conventional lime-neutralized one and promotes the fertilization effect, so that the yield is increased. Further, it is considered that the onions have the same size because the pH adjusting agent is granular and is mixed with the soil evenly.
【００３１】[0031]
【発明の効果】本発明の建設発生土を水溶性高分子と石
灰で処理して得られる再生土からなる農業用資材は、従
来、建設発生土を生石灰処理法によるプラントで製造し
た再生土の主用途である道路工事の埋設管の埋め戻しに
優れているのは勿論、園芸・植栽用土壌、更には田畑の
土壌の中和剤として極めて有用である。このように、本
発明は、建設発生土の利用分野を拡大し、再資源化を促
進させることができ、環境問題に貢献するところが大き
い。EFFECTS OF THE INVENTION Agricultural materials comprising regenerated soil obtained by treating the soil generated by the construction of the present invention with a water-soluble polymer and lime are conventional regenerated soils produced by plants using the quick lime treatment method. Not only is it excellent in backfilling buried pipes for road construction, which is the main application, but is also extremely useful as a neutralizing agent for horticultural and planting soils as well as field soils. As described above, the present invention can greatly expand the field of use of soil generated from construction and promote recycling, and contributes greatly to environmental problems.
Claims (7)
化後、石灰で処理した再生土から成る園芸・植栽用資
材。1. A horticultural / planting material comprising reclaimed soil which has been treated with lime after being granulated by adding a water-soluble polymer to hydrous soil.
化後、石灰で処理した再生土から成る土壌のｐＨ調整用
資材。2. A soil pH adjusting material comprising reclaimed soil treated with lime after granulation by adding a water-soluble polymer to hydrous soil.
設発生土である請求項１又は２のいずれかに記載の資
材。3. The material according to claim 1, wherein the soil is soil generated from civil engineering and construction work.
はその塩を含有する（メタ）アクリルアミド系重合体で
ある請求項１又は２のいずれかに記載の資材。4. The material according to claim 1, wherein the water-soluble polymer is a (meth) acrylamide polymer containing (meth) acrylic acid or a salt thereof.
キシル基を有する単量体を全単量体に対し５〜６０モル
％含む重合体である請求項４に記載の資材。5. The material according to claim 4, wherein the water-soluble polymer is a polymer containing a monomer having a carboxyl group as a hydrophilic group in an amount of 5 to 60 mol% based on all monomers.
１：５００である請求項１又は２のいずれかに記載の資
材。6. The weight ratio of water-soluble polymer to lime is 1: 1 to 1.
The material according to claim 1 or 2, which has a ratio of 1: 500.
化し、次いで粒径１ｍｍ以下の石灰粉で処理し該粒子の
表面に均一に分散させることよりなる請求項１又は２の
いずれかに記載の資材の製造方法。7. The method according to claim 1, wherein a water-soluble polymer is added to the water-containing soil to granulate, then treated with lime powder having a particle size of 1 mm or less and uniformly dispersed on the surface of the particle. The manufacturing method of the material described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6196256A JPH0841460A (en) | 1994-07-29 | 1994-07-29 | Agricultural material and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6196256A JPH0841460A (en) | 1994-07-29 | 1994-07-29 | Agricultural material and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0841460A true JPH0841460A (en) | 1996-02-13 |
Family
ID=16354790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6196256A Pending JPH0841460A (en) | 1994-07-29 | 1994-07-29 | Agricultural material and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0841460A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7803227B2 (en) * | 2003-03-19 | 2010-09-28 | Concolid Technik Deutschland GmbH | Means and method for sealing constructions |
-
1994
- 1994-07-29 JP JP6196256A patent/JPH0841460A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7803227B2 (en) * | 2003-03-19 | 2010-09-28 | Concolid Technik Deutschland GmbH | Means and method for sealing constructions |
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