JPH0984451A - Powdery granular artificial culture soil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject culture soil causing no deterioration of its physical properties such as water content without impairing its characteristics, capable of improving germination rate in raising seedling, excellent in plant growing ability, thus useful for field crop, etc., comprising each specific culture soil as the main component and inorganic fertilizer salt at a specified proportion. SOLUTION: This artificial culture soil comprises (A) 99.0-99.9wt.% of culture soil as the main component composed of (i) 5-45wt.% of at least one kind of soil modifier of animal/vegetable nature free from any harmful germ or toxic matter and selected from peat, peat moss and charcoal and (ii) 55-95wt.% of a mineral soil modifier containing at least zeolite as the main ingredient and (B) 0.1-1.0wt.% of an inorganic fertilizer salt containing e.g. 1×10<-4> to 1×10<-2> wt.% of a minute amount of boron. It is preferable that the culture soil as the main component (A) comprise 50-90wt.% of zeolite, 5-35wt.% of peat and 1-20wt.% of at least one kind selected from vermiculite and pearlite.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、粉粒状人工培土に
関するものである。本発明の粉粒状人工培土は、果菜、
葉菜、根菜などの農作物、園芸作物、花卉、芝等の培土
として、またプランター、露地、庭用として、さらにハ
ウス栽培、トンネル栽培、砂耕栽培などの農家や企業の
業務用として有用である。TECHNICAL FIELD The present invention relates to a granular artificial soil. The granular artificial soil of the present invention is a fruit vegetable,
It is useful as a soil for agricultural crops such as leaf vegetables and root vegetables, horticultural crops, flowers, turf, etc., for planters, open fields, gardens, as well as for commercial use by farmers and companies such as greenhouse cultivation, tunnel cultivation, sand cultivation. .

【０００２】[0002]

【従来の技術】人工培土には、原土、有機資材、土壌改
良資材及び肥料を混合、造粒機により粒状化した粒状タ
イプと、原土、有機資材、肥料などを混合し、特に泥炭
等の有機資材を多く用いた粉粒混合タイプの２種類があ
る。2. Description of the Related Art Artificial soil is prepared by mixing raw soil, organic material, soil improving material and fertilizer, and granulating with a granulator to mix raw soil, organic material, fertilizer, etc. There are two types of powder and grain mixed type that uses a lot of organic materials.

【０００３】粒状タイプの人工培土は、原土と造粒後の
２回、熱風で乾燥することにより有害菌の殺菌が行われ
ているが、粉粒混合タイプの人工培土は、混合後には熱
風乾燥殺菌を行うことができないため、バーク堆肥のよ
うな堆きゅう肥や腐葉土等の根こぶ菌のような有害菌や
有害物を含有する動植物質改良資材を用いる場合には、
それぞれ加熱殺菌や消毒等の煩雑な処置をとらざるを得
ないという欠点がある。[0003] The granular type artificial soil is sterilized by blasting the raw soil and hot air twice after the granulation, while the powder-grain type artificial soil is mixed with hot air after mixing. Since it cannot be dried and sterilized, when using animal and plant improving materials containing harmful fungi and harmful substances such as compost such as bark compost and root-knot fungi such as mulch,
Each has the drawback that it has to take complicated measures such as heat sterilization and disinfection.

【０００４】そこで、粉粒状タイプの人工培土に、この
ような処置を要する動植物質改良資材を用いないで加熱
殺菌や消毒等の処置を行わないようにして、手間を省
き、経済性や安全性を優先させた場合には、人工培土の
物理的性質（例えば含水率など）の劣化や微量要素の欠
乏に陥り、そのため育苗が不十分となるなど人工培土本
来の機能が低下するのを免れない。Therefore, the powdery and granular type artificial soil is not subjected to treatment such as heat sterilization or disinfection without using the animal and plant improving material which requires such treatment, thus saving labor and improving economy and safety. If priority is given to the artificial soil, the physical properties of the artificial soil (such as water content) will deteriorate and the trace elements will be deficient, which will inevitably lead to a decline in the original function of the artificial soil such as insufficient seedlings. .

【０００５】[0005]

【発明が解決しようとする課題】本発明は、このような
従来の粉粒状人工培土のもつ欠点を克服し、培土の特性
が損なわれることのなく、含水率などの物理的性質の劣
化を起こさず、作物の生育性に優れた粉粒状人工培土を
提供することを目的としてなされたものである。DISCLOSURE OF THE INVENTION The present invention overcomes the drawbacks of the conventional artificial powdery granular soils, and does not impair the characteristics of the soils and causes deterioration of physical properties such as water content. First, the purpose of the present invention is to provide a powdery granular artificial soil excellent in the viability of crops.

【０００６】[0006]

【課題を解決するための手段】本発明者らは、前記した
良好な特性を有する粉粒状人工培土を開発するために鋭
意研究を重ねた結果、加熱殺菌や消毒等の煩雑な処置を
行わなくても人工培土原料に用いうる特定の動植物質土
壌改良資材と鉱物質土壌改良資材と肥料塩類との混合物
が、その目的に適合することを見出し、この知見に基づ
いて本発明をなすに至った。Means for Solving the Problems The inventors of the present invention have conducted intensive studies to develop the above-mentioned powdery granular artificial soil having good characteristics, and as a result, did not perform complicated treatments such as heat sterilization and disinfection. Even a mixture of a specific animal and plant soil improving material and a mineral soil improving material and fertilizer salts that can be used as an artificial cultivation soil material was found to be suitable for that purpose, and the present invention was made based on this finding. .

【０００７】すなわち、本発明は、有害菌又は有害物を
含有しない動植物質土壌改良資材５〜４５重量％及び少
なくとも沸石を主成分として含有する鉱物質土壌改良資
材５５〜９５重量％からなる培土主体９９．０〜９９．
９重量％及び微量のホウ素を含む無機質肥料塩類０．１
〜１．０重量％からなることを特徴とする粉粒状人工培
土を提供するものである。[0007] That is, the present invention is mainly based on a soil medium consisting of 5 to 45% by weight of an animal and plant soil improving material containing no harmful bacteria or harmful substances and 55 to 95% by weight of a mineral soil improving material containing at least zeolite as a main component. 99.0 to 99.
Mineral fertilizer salts containing 9% by weight and trace amount of boron 0.1
The present invention provides a powdery granular artificial soil characterized by comprising: ~ 1.0% by weight.

【０００８】[0008]

【発明の実施の形態】本発明に用いる動植物質土壌改良
資材については、有害菌又は有害物を含有しないもので
あれば特に制限はなく、このようなものとしては、例え
ば泥炭、草炭、炭、ココナッツ繊維、バナナ繊維、これ
らの混合物などが挙げられ、特に保水性、保肥力に優れ
た泥炭が好ましい。この炭としては、例えば木炭、活性
炭などが挙げられる。BEST MODE FOR CARRYING OUT THE INVENTION The animal and plant soil improving material used in the present invention is not particularly limited as long as it does not contain harmful fungi or harmful substances, and examples thereof include peat, grass peat, charcoal, Examples thereof include coconut fiber, banana fiber, and a mixture thereof, and peat having excellent water retention and fertilizing power is particularly preferable. Examples of this charcoal include charcoal and activated charcoal.

【０００９】泥炭、草炭は保水性、保肥力に優れてお
り、これについては特に制限はないが、不純物の混入が
少なく、含水率が一定のものが好ましい。また、泥炭は
撥水的性質を示すため、撥水防止効果のある界面活性剤
や高分子吸収剤を少量、例えば泥炭に対し１〜５０００
ｐｐｍ添加するのが好ましい。[0009] Peat and grass charcoal are excellent in water retention and fertilizing power, and there is no particular limitation, but it is preferable that the content of impurities is small and the water content is constant. Further, since peat exhibits water-repellent properties, a small amount of surfactant or polymer absorbent having a water-repellent effect, for example 1 to 5000 per peat.
It is preferable to add ppm.

【００１０】ココナッツ繊維、バナナ繊維は通気性に優
れており、これについては特に制限はないが、嵩比重が
小さく、不純物の混入が少ないものが好ましい。The coconut fiber and the banana fiber are excellent in air permeability, and there is no particular limitation, but those having a low bulk specific gravity and less impurities are preferable.

【００１１】また、鉱物質土壌改良資材については、少
なくとも沸石を主成分として含有させる。沸石は、陽イ
オン交換能力が大きく多孔質であるので、保肥力に優
れ、雨水などによる肥料要素の流失を抑制し、保水性と
ともに透水性、通気性を有し、根の生育、根張りに適し
ており、なかでも天然沸石が好ましく用いられる。The mineral soil improving material contains at least zeolite as a main component. Zeolite has a large cation exchange capacity and is porous, so it has excellent fertilizing ability, suppresses the washout of fertilizer elements due to rainwater, etc., and has water permeability as well as water permeability, breathability, for root growth and rooting. It is suitable, and natural zeolite is preferably used.

【００１２】さらに有利には、粒状物と粉状物とを併用
するのが好ましく、特に、天然沸石は粘土分を少量含ん
でおり、この粘土分は粉状物の方に多く含まれるので、
粉状沸石の併用により培土に粘結性を付与しうる。Further advantageously, it is preferable to use a granular material and a powdery material in combination. In particular, natural zeolite has a small amount of clay content, and since this clay content is more contained in the powdery material,
Caking property can be added to the soil by using powdered zeolite.

【００１３】鉱物質土壌改良資材は沸石単独からなるも
のの他、沸石を主とし、さらにその他の鉱物質土壌改良
資材を併用することができる。このようなその他の資材
としては、例えばパーライト、バーミキュライト、転炉
滓のようなスラグなどが挙げられ、中でもバーミキュラ
イトが好ましい。The mineral soil amendment material is not only made of zeolite alone, but it is mainly composed of zeolite, and other mineral soil amendment materials can be used together. Examples of such other materials include pearlite, vermiculite, slag such as converter slag, and among others, vermiculite is preferable.

【００１４】バーミキュライトは、通気性、透水性に優
れ、根などの地下部生体重の増進効果を有しており、こ
れについては特に制限はないが、嵩比重が小さく、粒度
が揃ったものが好ましい。Vermiculite is excellent in breathability and water permeability, and has an effect of promoting living weight in the underground such as roots. Although there is no particular limitation, it is preferable that vermiculite has a small bulk specific gravity and a uniform particle size. preferable.

【００１５】パーライトは通気性に優れており、これに
ついては特に制限はないが、嵩比重が小さく、粒度が揃
い、不純物の混入が少ないものが好ましい。Perlite is excellent in air permeability, and although it is not particularly limited, it is preferable that pearlite has a small bulk specific gravity, uniform particle size, and less impurities mixed therein.

【００１６】本発明の培土主体においては、沸石を５０
〜９０重量％、中でも７０〜９０重量％含有させるのが
好ましい。この含有量が５０重量％未満では陽イオン交
換容量が低下し、肥料流亡による苗の生育悪化を来す
し、また９０重量％を超えると保水性や透水性のバラン
スの悪化をきたす。In the main constituent of the soil of the present invention, 50% of zeolite is used.
˜90 wt%, especially 70 to 90 wt%. If this content is less than 50% by weight, the cation exchange capacity will decrease, leading to poor growth of seedlings due to fertilizer runoff, and if it exceeds 90% by weight, the balance of water retention and water permeability will deteriorate.

【００１７】本発明の培土主体においては、さらに泥炭
と、バーミキュライト及びパーライトの一方又は両方と
を配合するのが好ましい。泥炭の配合割合は培土全量に
対して、好ましくは５〜３５重量％、より好ましくは５
〜３０重量％、中でも１０〜２０重量％とするのがよ
い。この配合量が５重量％未満では保水性が低下し、ｐ
Ｈが高くなるし、また３５重量％を超えると透水性が低
下し、ｐＨが低くなる。In the main soil of the present invention, it is preferable to further mix peat with one or both of vermiculite and perlite. The mixing ratio of peat is preferably 5 to 35% by weight, more preferably 5%, with respect to the total amount of soil.
-30% by weight, preferably 10-20% by weight. If this blending amount is less than 5% by weight, the water retention will decrease, and p
If H is high, and if it exceeds 35% by weight, water permeability is lowered and pH is lowered.

【００１８】また、バーミキュライト及びパーライトの
一方又は両方の配合割合は培土主体全量に対し、１〜２
０重量％、中でも５〜２０重量％、特に１０〜２０重量
％とするのが好ましい。この配合量が１重量％未満では
嵩比重が大きくなり、透水性が低下するし、また２０重
量％を超えると嵩比重が軽くなりすぎてしまう。パーラ
イトを配合する場合、その割合は培土全量に対し、０．
５〜１５重量％、中でも１〜１０重量％とするのが好ま
しい。この割合が０．５重量％未満では透水性が低下す
るし、また１５重量％を超えるとｐＨが高くなる。Further, the compounding ratio of one or both of vermiculite and perlite is 1 to 2 with respect to the total amount of the cultivation soil.
It is preferably 0% by weight, particularly 5 to 20% by weight, particularly 10 to 20% by weight. If the content is less than 1% by weight, the bulk specific gravity becomes large and the water permeability decreases, and if it exceeds 20% by weight, the bulk specific gravity becomes too light. When perlite is added, the ratio is 0.
It is preferably 5 to 15% by weight, and more preferably 1 to 10% by weight. If this proportion is less than 0.5% by weight, the water permeability will decrease, and if it exceeds 15% by weight, the pH will increase.

【００１９】このような好適培土主体の中でも、特に沸
石５０〜８０重量％、泥炭１０〜３５重量％、及びバー
ミキュライト１０〜２０重量％を含有するものが好まし
い。Among such suitable soils, those containing 50 to 80% by weight of zeolite, 10 to 35% by weight of peat, and 10 to 20% by weight of vermiculite are particularly preferable.

【００２０】また、本発明の培土主体は、動植物質土壌
改良資材１０〜４０重量％、中でも２０〜４０重量％
と、鉱物質土壌改良資材６０〜９０重量％、中でも６０
〜８０重量％とからなるものが好ましい。動植物質土壌
改良資材が少なすぎると、保水性が悪化するし、また多
すぎると通気性・透水性が悪化し、ｐＨが低くなりすぎ
る傾向がみられる。Further, the main constituent of the soil of the present invention is 10 to 40% by weight of animal and vegetable soil improving materials, and 20 to 40% by weight among them.
And 60 to 90% by weight of mineral soil improving material, especially 60
What is comprised from -80 weight% is preferable. If the amount of the material for improving soil of animals and plants is too small, the water retention property is deteriorated, and if it is too large, the air permeability and water permeability are deteriorated, and the pH tends to be too low.

【００２１】また、本発明に用いる無機質肥料塩類とし
ては、微量のホウ素を含有する無機質塩類、例えばホウ
砂、ホウ酸肥料、熔成ホウ酸肥料などとともに、例えば
窒素、リン、カリウムなどの肥料要素を含む無機質肥料
塩類が用いられる。この無機質肥料塩類としては、例え
ば塩化アンモニウム、尿素、リン酸アンモニウム、塩化
カリ、過リン酸石灰などが挙げられる。The inorganic fertilizer salts used in the present invention include inorganic salts containing a trace amount of boron, such as borax, boric acid fertilizer, and molten boric acid fertilizer, as well as fertilizer elements such as nitrogen, phosphorus and potassium. An inorganic fertilizer salt containing is used. Examples of the inorganic fertilizer salts include ammonium chloride, urea, ammonium phosphate, potassium chloride, lime superphosphate and the like.

【００２２】本発明に用いる無機質肥料塩類の配合割合
は、本発明の培土全量に対し、０．１〜１．０重量％の
範囲で選ばれる。この割合が多すぎるとＥＣが高くな
り、硝酸態窒素が増加すると苗が徒長するなど作物の生
育が低下する傾向がみられる。The mixing ratio of the inorganic fertilizer salt used in the present invention is selected in the range of 0.1 to 1.0% by weight based on the total amount of the soil of the present invention. If this ratio is too large, the EC tends to be high, and if the nitrate nitrogen increases, the seedlings tend to grow and the crop growth tends to decline.

【００２３】本発明の培土は、無機質肥料塩類中にホウ
素を含有させることにより、作物の生体重の増大を画る
ことができる。ホウ素の含有割合は、本発明の培土全量
に対し、１×１０^-4〜１×１０^-2重量％すなわち０．０
０１〜０．１ｇ／ｋｇの範囲とするのが好ましい。In the soil of the present invention, by adding boron to the inorganic fertilizer salt, it is possible to increase the fresh weight of the crop. The content ratio of boron is 1 × 10 ⁻⁴ to 1 × 10 ⁻² % by weight, that is, 0.0 with respect to the total amount of the soil of the present invention.
It is preferably in the range of 01 to 0.1 g / kg.

【００２４】[0024]

【発明の効果】本発明の粉粒状人工培土は、培土として
の特性を損なうことなく、含水率などの物理的性質の劣
化を起こさず、育苗時の発芽率を高め、作物の生育性に
優れ、高増収度が得られるという顕著な効果を奏する。EFFECTS OF THE INVENTION The powdery and granular artificial soil of the present invention does not impair the characteristics as soil, does not cause deterioration of physical properties such as water content, increases the germination rate during seedling raising, and is excellent in crop viability. In addition, it has a remarkable effect that a high yield can be obtained.

【００２５】[0025]

【実施例】次に実施例によって本発明をさらに詳細に説
明する。Next, the present invention will be described in more detail by way of examples.

【００２６】実施例１ 泥炭３０ｋｇに、沸石７０ｋｇ、リン酸アンモニウム
０．２ｋｇ、硝酸マグネシウム０．１ｋｇ、硝酸カリ
０．１ｋｇ及びホウ砂０．０１ｋｇを混合し、粉粒状人
工培土を得た。Example 1 30 kg of peat was mixed with 70 kg of zeolitic stone, 0.2 kg of ammonium phosphate, 0.1 kg of magnesium nitrate, 0.1 kg of potassium nitrate and 0.01 kg of borax to obtain a granular artificial soil.

【００２７】実施例２ 泥炭２０ｋｇと炭１０ｋｇに、沸石６０ｋｇ、バーミキ
ュライト１０ｋｇ、リン酸アンモニウム０．２ｋｇ、硝
酸マグネシウム０．１ｋｇ、硝酸カリ０．１ｋｇ及びホ
ウ砂０．０１ｋｇを混合し、粉粒状人工培土を得た。Example 2 20 kg of peat and 10 kg of charcoal were mixed with 60 kg of zeolitic stone, 10 kg of vermiculite, 0.2 kg of ammonium phosphate, 0.1 kg of magnesium nitrate, 0.1 kg of potassium nitrate and 0.01 kg of borax to form a powder-granular artificial mixture. I got the soil.

【００２８】実施例３ 泥炭１０ｋｇに、沸石７０ｋｇ、バーミキュライト２０
ｋｇ、リン酸アンモニウム０．２ｋｇ、硝酸マグネシウ
ム０．１ｋｇ及び硝酸カリ０．１ｋｇ及びハイボロン
（Ｂ‐２４号粉状）（商品名、日本フエロー社製）０．
００８ｋｇを混合し、粉粒状人工培土を得た。Example 3 10 kg of peat, 70 kg of boiling stone, and 20 of vermiculite
kg, ammonium phosphate 0.2 kg, magnesium nitrate 0.1 kg and potassium nitrate 0.1 kg and high boron (B-24 No. powder) (trade name, manufactured by Nippon Ferro Co.).
008 kg was mixed to obtain a powdery granular artificial soil.

【００２９】実施例４ 泥炭３５ｋｇと炭５ｋｇに、沸石５０ｋｇ、バーミキュ
ライト１０ｋｇ、リン酸アンモニウム０．２ｋｇ、硝酸
マグネシウム０．１ｋｇ、硝酸カリ０．１ｋｇ及びハイ
ボロン（Ｂ‐２４号粉状）（商品名、日本フエロー社
製）０．０５ｋｇを混合し、粉粒状人工培土を得た。Example 4 35 kg of peat and 5 kg of charcoal, 50 kg of boiling stone, 10 kg of vermiculite, 0.2 kg of ammonium phosphate, 0.1 kg of magnesium nitrate, 0.1 kg of potassium nitrate and high boron (B-24 powder) (trade name) 0.05 kg (manufactured by Nippon Ferro Co., Ltd.) was mixed to obtain a granular artificial soil.

【００３０】これらの人工培土、市販粒状培土Ａ及び市
販粉粒状培土Ｂの特性を測定した結果を表１に示す。Table 1 shows the results of measuring the characteristics of the artificial soil, the commercially available granular soil A and the commercially available powdery soil B.

【００３１】[0031]

【表１】 [Table 1]

【００３２】注）市販粒状培土Ａ：クレハ園芸培土（商
品名：呉羽化学工業社製） 市販粉粒状培土Ｂ：与作ＶＩ号（商品名：チッソ旭肥料
社製）Note) Commercial granular soil A: Kureha gardening soil (product name: Kureha Chemical Industry Co., Ltd.) Commercial granular soil B: Yosaku VI (product name: Chisso Asahi Fertilizer)

【００３３】この結果より、本発明の人工培土は、粉粒
状人工培土でありながら、市販粒状培土Ａに近い含水率
を示し、また、市販粉粒状培土Ｂと同等のかさ比重値を
示した。From these results, the artificial soil of the present invention was a powder-granular artificial soil, but showed a water content close to that of the commercial granular soil A and a bulk specific gravity value similar to that of the commercial granular soil B.

【００３４】これらの人工培土を１２８穴のプラグトレ
イ（セル容量２９ｍｌ）に充填し、はくさい種子１２８
粒を播種し、２１日間ガラス温室内で育成した。それぞ
れの生育度を、この育成後の発芽率を求め、地下部（根
部）及び地上部の生体重を測定することによって調べ
た。これらの結果を表２に示す。A 128-well plug tray (cell capacity: 29 ml) was filled with these artificial soils, and the seeds of cabbage seeds 128 were filled.
Grains were sown and grown in a glass greenhouse for 21 days. The degree of growth was examined by determining the germination rate after the growth and measuring the living weights of the underground part (root part) and the above-ground part. Table 2 shows the results.

【００３５】[0035]

【表２】 [Table 2]

【００３６】この結果より、本発明の粉粒状人工培土で
は、堆肥や腐葉土のような肥料要素を含む動植物質土壌
改良資材を有していないのにもかかわらず、そのような
資材を有している比較例の人工培土と比べて、発芽率に
優れている上に、生育度でははるかに勝り、高増収度が
得られることが分る。From these results, the powdered and granular artificial soil of the present invention does not have the animal and plant soil amendment material containing fertilizer elements such as compost and humus, but has such material. It can be seen that, compared with the artificial soil of Comparative Example, the germination rate is excellent, the growth rate is far superior, and high yield is obtained.

Claims (6)

【特許請求の範囲】[Claims] 【請求項１】 有害菌又は有害物を含有しない動植物質
土壌改良資材５〜４５重量％及び少なくとも沸石を主成
分として含有する鉱物質土壌改良資材５５〜９５重量％
からなる培土主体９９．０〜９９．９重量％及び微量の
ホウ素を含む無機質肥料塩類０．１〜１．０重量％から
なることを特徴とする粉粒状人工培土。1. A material for improving soil of animals and plants which does not contain harmful bacteria or harmful substances 5 to 45% by weight, and a material for improving soil of mineral matter containing at least zeolite as a main component 55 to 95% by weight.
The artificial soil consisting mainly of 99.0 to 99.9% by weight and 0.1 to 1.0% by weight of inorganic fertilizer salts containing a trace amount of boron. 【請求項２】 動植物質土壌改良資材が泥炭、草炭及び
炭の中から選ばれた少なくとも１種である請求項１記載
の粉粒状人工培土。2. The powdery and granular artificial soil according to claim 1, wherein the animal and plant soil improving material is at least one selected from peat, grass charcoal and charcoal. 【請求項３】 鉱物質土壌改良資材が沸石と、パーライ
ト、バーミキュライト及びスラグの中から選ばれた少な
くとも１種とからなる請求項１又は２記載の粉粒状人工
培土。3. The powdery granular artificial soil according to claim 1, wherein the mineral soil improving material comprises zeolite and at least one selected from perlite, vermiculite and slag. 【請求項４】 培土主体が、沸石５０〜９０重量％、泥
炭５〜３５重量％、及びバーミキュライト及びパーライ
トの中から選ばれた少なくとも１種１〜２０重量％を含
有する請求項１、２又は３記載の粉粒状人工培土。4. The main soil material contains 50 to 90% by weight of zeolite, 5 to 35% by weight of peat, and 1 to 20% by weight of at least one selected from vermiculite and perlite. The granular granular cultivating soil described in 3. 【請求項５】 培土主体が動植物質土壌改良資材１０〜
４０重量％と鉱物質土壌改良資材６０〜９０重量％から
なる請求項１ないし４のいずれかに記載の粉粒状人工培
土。5. A soil-based material for improving animal and plant soil 10 to 10
The powdery granular artificial soil according to any one of claims 1 to 4, comprising 40% by weight and 60 to 90% by weight of a mineral soil improving material. 【請求項６】 ホウ素を１×１０^-4〜１×１０^-2重量％
含有する請求項１ないし５のいずれかに記載の粉粒状人
工培土。6. Boron in an amount of 1 × 10 ⁻⁴ to 1 × 10 ⁻² % by weight
The granular granular artificial soil according to any one of claims 1 to 5, which is contained.