JPH01312932A - Seedling raising mat for paddy rice plant - Google Patents
Seedling raising mat for paddy rice plantInfo
- Publication number
- JPH01312932A JPH01312932A JP63142036A JP14203688A JPH01312932A JP H01312932 A JPH01312932 A JP H01312932A JP 63142036 A JP63142036 A JP 63142036A JP 14203688 A JP14203688 A JP 14203688A JP H01312932 A JPH01312932 A JP H01312932A
- Authority
- JP
- Japan
- Prior art keywords
- rock wool
- paddy rice
- seedling
- mat
- seedling raising
- 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.)
- Granted
Links
- 240000007594 Oryza sativa Species 0.000 title 1
- 241000209094 Oryza Species 0.000 claims abstract description 39
- 239000011490 mineral wool Substances 0.000 claims abstract description 31
- QFHMNFAUXJAINK-UHFFFAOYSA-N [1-(carbamoylamino)-2-methylpropyl]urea Chemical compound NC(=O)NC(C(C)C)NC(N)=O QFHMNFAUXJAINK-UHFFFAOYSA-N 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001963 growth medium Substances 0.000 claims abstract description 8
- 239000013522 chelant Substances 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 150000007524 organic acids Chemical class 0.000 claims abstract description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 36
- 235000009566 rice Nutrition 0.000 claims description 36
- 239000002609 medium Substances 0.000 claims description 16
- 229910000358 iron sulfate Inorganic materials 0.000 claims description 10
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 10
- 239000003337 fertilizer Substances 0.000 abstract description 25
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 abstract description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract description 11
- 239000004202 carbamide Substances 0.000 abstract description 11
- 230000002378 acidificating effect Effects 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 239000000843 powder Substances 0.000 abstract description 4
- 230000012010 growth Effects 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- 239000007800 oxidant agent Substances 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 230000001954 sterilising effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 14
- 241000223218 Fusarium Species 0.000 description 9
- 241000235527 Rhizopus Species 0.000 description 9
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- UHPMCKVQTMMPCG-UHFFFAOYSA-N 5,8-dihydroxy-2-methoxy-6-methyl-7-(2-oxopropyl)naphthalene-1,4-dione Chemical compound CC1=C(CC(C)=O)C(O)=C2C(=O)C(OC)=CC(=O)C2=C1O UHPMCKVQTMMPCG-UHFFFAOYSA-N 0.000 description 6
- 230000035784 germination Effects 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- XMKLTEGSALONPH-UHFFFAOYSA-N 1,2,4,5-tetrazinane-3,6-dione Chemical compound O=C1NNC(=O)NN1 XMKLTEGSALONPH-UHFFFAOYSA-N 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 3
- 239000002535 acidifier Substances 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007859 condensation product Substances 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 239000000618 nitrogen fertilizer Substances 0.000 description 3
- 238000002054 transplantation Methods 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000003385 bacteriostatic effect Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- QBMCTWVDGGAZJI-UHFFFAOYSA-N 1-(carbamoylamino)butylurea Chemical compound CCCC(NC(N)=O)NC(N)=O QBMCTWVDGGAZJI-UHFFFAOYSA-N 0.000 description 1
- 241000736285 Sphagnum Species 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000007922 dissolution test Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 for example Chemical compound 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 208000037824 growth disorder Diseases 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000036435 stunted growth Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cultivation Of Plants (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、水稲栽培に利用される苗を育成するための育
苗マットに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a seedling growing mat for growing seedlings used in rice cultivation.
近年、水稲栽培には、田植の省力化を図ることを目的と
して、機械による移植栽培が著しく普及しており、作付
は面積の９５％以上もが機械移植を利用して行なわれて
いるのが実情である。In recent years, mechanical transplantation has become extremely popular in wet rice cultivation, with the aim of saving labor during rice transplantation, and more than 95% of the area is planted using mechanical transplantation. This is the reality.
前記機械による移植栽培は、通常、育苗箱によって育成
された苗を機械で移植するものであり、育苗箱内の床上
に肥料を施した後に種子を散布し、その表面に覆土を行
ない、更に【Ｎ水して育成された苗が利用されている。In the above-mentioned mechanical transplant cultivation, seedlings grown in a nursery box are usually transplanted by machine, and after applying fertilizer on the floor of the nursery box, the seeds are scattered, and the surface is covered with soil. Seedlings grown with N water are used.
最近では、前記床土の代わりにロックウールによる直方
成形体を培地とする育苗マットが提案されており、ロッ
クウールからなる培地に、所要の水溶性固形肥料、例え
ば、硫安、燐酸１石灰等の水溶性固形肥料を付着、また
は浸潤させた育苗マットが使用され始めている。Recently, a seedling growing mat using a rock wool rectangular molded body as a medium instead of the bed soil has been proposed. Seedling raising mats that are coated with or soaked with water-soluble solid fertilizers are beginning to be used.
ところで、前記ロックウールによる直方成形体を培地と
する水稲用の育苗マットは、苗の育成期間中を通して潅
水され、常時水に浸漬されているものであることから、
前記ロックウールからなる培地に坦持されていた硫安、
燐酸１石灰等の水溶性固形肥料が、育苗の初期において
殆ど水中に溶出してしまうという欠点を有している。By the way, the seedling mat for paddy rice using the rock wool rectangular shaped body as a medium is irrigated throughout the seedling growing period and is constantly immersed in water.
ammonium sulfate supported on the medium made of rock wool;
Water-soluble solid fertilizers such as phosphoric acid 1 lime have the disadvantage that most of them are leached into water in the early stage of seedling raising.
すなわち、前記従来のロックウールを培地とする水稲用
の育苗マットによる苗の育成においては、育苗の開始時
から１〜５日頃には、硫安、燐酸１カリ等の水溶性肥料
の濃度が比較的に高くなる傾向があるため、発芽むら、
出芽不良１等を生ずる原因となる場合があり、また、１
０日目頃からは、前記肥料濃度が著しく低下する肥料不
足の状態となり、草丈の不足、成育むら等を生ずる可能
性もある。In other words, when growing seedlings using the conventional rock wool-based seedling mat for paddy rice, the concentration of water-soluble fertilizers such as ammonium sulfate and monopotassium phosphate becomes relatively low within 1 to 5 days from the start of seedling raising. germination, uneven germination,
It may cause poor germination, such as 1.
From about day 0 onwards, the fertilizer concentration will drop markedly, leading to a state of insufficient fertilizer, which may lead to insufficient plant height, stunted growth, etc.
特に、前記水稲用の育苗マットによる苗の育成に際して
の水溶性肥料濃度の問題は、寒冷地において顕著であり
、これを解決するための追肥施用が強力に指導されてい
るが、追肥施用のためには手間が必要とされるため、追
肥施用によって前記水溶性肥料の問題を完全に解消する
ことは困難である。In particular, the problem of water-soluble fertilizer concentration when growing seedlings using the rice seedling mats mentioned above is noticeable in cold regions, and the application of top-dress fertilizer is strongly advised to solve this problem. Since this requires time and effort, it is difficult to completely eliminate the problems of water-soluble fertilizers by applying additional fertilizer.
また、前記ロックウ−？しによる直方成形体を培地とす
る育苗マットは、培地であるロックウールに、該ロック
ウールのｐＨな水稲の育苗に好適な酸性側に調節するた
めの硫酸鉄が酸性化剤として坦持されていることがあり
、前記酸性化剤たる硫酸鉄が肥料成分の１つである燐酸
との間に不溶性の燐酸鉄を生成する性質を有しているこ
とから、水稲苗による燐酸の吸収が十分に行なわれ得な
いという欠点をも有している。Also, the aforementioned Rockwu? A seedling raising mat using a rectangular molded body as a medium has iron sulfate carried as an acidifying agent in rock wool as a medium to adjust the pH of the rock wool to an acidic side suitable for raising paddy rice seedlings. Since iron sulfate, which is an acidifying agent, has the property of forming insoluble iron phosphate with phosphoric acid, which is one of the fertilizer components, phosphoric acid is not absorbed sufficiently by rice seedlings. It also has the disadvantage that it cannot be carried out.
これに対して、末弟１の発明は、育苗マットによる水稲
苗の育苗中における前記肥料濃度の問題を解消すると共
に、フザリウム菌やリゾプス菌に対する殺菌作用をも具
備する水稲用の育苗マットを提供するものであり、また
、末弟２の発明は、育苗マットによる水稲苗の育苗中に
おける前記肥料濃度の問題を解消し、また、フザリウム
菌やリゾプス菌に対する殺菌作用をも具備し、しかもロ
ックウールのｐＨを水稲の育苗に好適な酸性側に調節す
るために硫酸鉄を使用した場合に燐酸肥料が十分に利用
され得ないというようなことのない水稲用の育苗マット
を提供するものである。In contrast, the invention of the youngest brother 1 solves the problem of fertilizer concentration during the raising of paddy rice seedlings using a seedling raising mat, and also provides a seedling raising mat for paddy rice that also has a bactericidal effect against Fusarium fungi and Rhizopus fungi. In addition, the invention of the youngest brother 2 solves the problem of fertilizer concentration during the raising of paddy rice seedlings using a seedling mat, and also has a bactericidal effect against Fusarium and Rhizopus bacteria, and furthermore, the pH of rock wool is To provide a seedling-raising mat for paddy rice, which prevents phosphoric acid fertilizer from being insufficiently utilized when iron sulfate is used to adjust the acidity to the acid side suitable for raising paddy rice seedlings.
末弟１の発明の水稲用の育苗マットは、該水稲用の育苗
マットにおける培地が、イソブチリデンジウレアを坦持
するロックウールによって構成されているものである。In the rice seedling growing mat invented by the youngest brother 1, the culture medium in the rice seedling growing mat is composed of rock wool that supports isobutylidene diurea.
また、末弟２の発明の水稲用の育苗マットは、該水稲用
の育苗マットにおける培地が、イソブチリデンジウレア
と、鉄との間にキレートを生成する性質を有する有機酸
と、硫酸鉄とを坦持するロックウールによって構成され
ているものである。In addition, the seedling mat for paddy rice according to the invention of youngest brother 2 has a medium in which the mat contains isobutylidene diurea, an organic acid having the property of forming a chelate with iron, and iron sulfate. It is made up of supporting rock wool.
前記構成からなる本各発明の水稲用の育苗マットにおい
て培地として利用されるロックウールは、樹脂バインダ
ーを使用して得られるフェルト状あるいは弾力性のある
ボード状、更には、スラブ状等の直方成形体からなるマ
ット状物であり、通常は、５０〜８０ｋｇ／ｒｒｌ程度
の密度を有するマット状物が利用される。The rock wool used as a medium in the seedling mat for paddy rice of the present invention having the above-mentioned structure can be formed into a felt shape or an elastic board shape obtained using a resin binder, or a rectangular shape such as a slab shape. It is a mat-like material made of bodies, and a mat-like material having a density of about 50 to 80 kg/rrl is usually used.
また、前記ロックウールによる培地に坦持されているイ
ソブチリデンジウレアは、イソブチルアルデヒド１分子
と尿素２分子の縮合生成体たるインブチリデン２尿素で
あり、下記反応式によって得られるもので、粒径２．０
朋以下の粉１粒状体が使用される。The isobutylidene diurea supported on the rock wool medium is imbutylidene diurea, which is a condensation product of one molecule of isobutyraldehyde and two molecules of urea, and is obtained by the following reaction formula, with a particle size of 2 .0
One granule of powder is used.
前記イソブチリデンジウレアの粒状体は、水に対して僅
か宛溶解し、水に溶解した後には比較的速やかに加水分
解を受けて尿素とインプチルアルデヒドとに分解するも
のであって、加水分解によって生成した尿素が窒素肥料
として作用するものである。The isobutylidene diurea granules are slightly soluble in water, and after being dissolved in water, they are relatively quickly hydrolyzed and decomposed into urea and imptyraldehyde. The urea produced by this process acts as a nitrogen fertilizer.
なお、粒径２．Ｏｓｕ＋以下の粉１粒状体からなるイソ
ブチリデンジウレアの常温水中への溶解は、水２００Ｍ
１にイソブチリデンジウレア１０！ｉを投入し、１日に
１回の割合で水を新しく取り替える溶出試験によれば、
５日間で約５〜１５％、１０日間で約１５〜３５％、２
０日間で約２５〜５５％、３０日間で約３５〜６５％、
４０日間で約４５〜７５％であることが確認されている
。In addition, particle size 2. Dissolution of isobutylidene diurea consisting of 1 grain of powder below Osu+ in water at room temperature is 200M water.
1 and isobutylidene diurea 10! According to a dissolution test in which water was added to water and fresh water was replaced once a day,
Approximately 5-15% in 5 days, approximately 15-35% in 10 days, 2
Approximately 25-55% in 0 days, approximately 35-65% in 30 days,
It has been confirmed that it is about 45-75% in 40 days.
また、前記イソブチリデンジウレアは、前記した通り、
水に溶解した後には比較的速やかに加水分解を受けて尿
素を生成するものであって、このときの副生物であるイ
ソブチルアルデヒドが、フザリウム菌やリゾプス菌に対
する制菌作用を有しており、特に、培地をｐＨ５程度の
酸性側に維持した場合に、前記フザリウム菌やリゾプス
菌による苗の発病を阻止することのより優れた作用が得
られる。Further, the isobutylidene diurea, as described above,
After being dissolved in water, it undergoes hydrolysis relatively quickly to produce urea, and the byproduct of this process, isobutyraldehyde, has a bacteriostatic effect against Fusarium and Rhizopus bacteria. In particular, when the culture medium is maintained at an acidic pH of about 5, a more excellent effect of preventing the onset of disease in seedlings caused by the Fusarium fungi and Rhizopus fungi can be obtained.
ロックウールからなる培地に坦持される前記イソブチリ
デンジウレアの量は、例えば、育苗の開始から１０日目
頃迄に従来の水溶性固形肥料による肥料効果が利用され
た後のｌＯ日目頃以降の肥料切れを補償するのに十分な
量であれば良く、通常は、従来の水溶性固形窒素肥料の
２０〜４０％が前記イソブチリデンジウレアで置き換え
られて坦持されるのが好ましい。The amount of isobutylidene diurea supported on the medium made of rock wool is, for example, about 10 days after the fertilizer effect of the conventional water-soluble solid fertilizer has been utilized by about the 10th day from the start of seedling raising. It is sufficient that the amount is sufficient to compensate for subsequent fertilizer shortage, and it is usually preferable that 20 to 40% of the conventional water-soluble solid nitrogen fertilizer be replaced and supported by the isobutylidene diurea.
なお、前記イソブチリデンジウレアの粒状体は、ロック
ウールの集積、圧縮、成形によってロックウールによる
培地を得る工程中にて、ロックウールに坦持させたり、
あるいは、ロックウールの集積、圧縮、成形によって得
られたロックウールに、例えば、圧入、または、水分散
液の散布、乾燥等によって、容易に坦持させ得るもので
ある。The isobutylidene diurea granules may be supported on rock wool during the process of collecting, compressing, and molding rock wool to obtain a culture medium using rock wool.
Alternatively, it can be easily supported on rock wool obtained by accumulating, compressing, and molding rock wool, for example, by press-fitting, spraying an aqueous dispersion, drying, or the like.
また、末弟２の発明において使用される「鉄との間にキ
レートを生成する性質を有する有機酸」は、培地である
ロックウールのｐＨを水稲の育苗に好適な酸性側に調節
するために坦持されている硫酸鉄との間にキレートを生
成するものテアって、例えば、クエン酸、フマル酸、リ
ンゴ酸等であり、ロックウールを水稲の育苗に好適なｐ
Ｈ５程度に維持し得るように坦持される従来の硫酸鉄の
一部を前記有機酸で置き換えて坦持させるのが好適であ
る。In addition, the ``organic acid that has the property of forming a chelate with iron'' used in the invention of Youngest Brother 2 is used to adjust the pH of rock wool, which is a culture medium, to an acidic side suitable for raising paddy rice seedlings. Tear is a substance that forms a chelate with iron sulfate, for example, citric acid, fumaric acid, malic acid, etc.
It is preferable to replace a part of the conventional iron sulfate, which is supported so as to be maintained at about H5, with the organic acid.
以下、本発明の水稲用の育苗マットの具体的な構成を、
実施例に基づいて説明する。Hereinafter, the specific structure of the seedling growing mat for paddy rice of the present invention is as follows:
An explanation will be given based on an example.
実施例・比較例
長さ６０ｃｍ、幅３０備、厚さ１．８ｃ＋＋＋のロック
ウール直方成形体に対して、粒径０．３ｍｍ以下の粉状
体からなるイソブチリデンジウレアをはじめ、下記第１
表のそれぞれの所定欄に表示されている各固形成分を坦
持させた水稲用育苗マットに、浸種されている１６０．
７ （６０００〜８０００粒）の種籾（ササニンキ）を
、略均等に播き、覆土した状態で３２°Ｃにて２日間保
持した。Examples/Comparative Examples A rock wool rectangular molded body with a length of 60 cm, a width of 30 mm, and a thickness of 1.8 cm was treated with isobutylidene diurea, which is a powder with a particle size of 0.3 mm or less, and the following
The seeds of 160.
7 (6,000 to 8,000 grains) of rice seeds (Sasaninki) were sown almost evenly, covered with soil, and kept at 32°C for 2 days.
引き続（・て、翌日から屋外に出して、覆土が乾燥しな
い程度に１日１〜２回宛潅水を続け、２１１００苗の状
態につ（・て、発芽数、乾物重量、充実度、草丈、Ｐ２
Ｏ５含有率、フザリウム菌及びリゾプス菌の有無につい
ての試験結果を、第１表に併記する。Continue to take them outdoors from the next day, and continue to water them once or twice a day to prevent the covered soil from drying out. , P2
The test results regarding the O5 content and the presence or absence of Fusarium and Rhizopus are also listed in Table 1.
なお、前記試験結果の中の発芽数、乾物重量、充実度、
草丈、Ｐ２Ｏ５含有率の各数値は、比較例１に示される
従来の水稲用の育苗マットによる場合を１００としたと
きの比較値であり、また、フザリウム菌及びリゾプス菌
の有無についての試験結果は、顕微鏡による確認結果で
あるＯ
〔発明の作用、効果〕
末弟１の発明の水稲用の育苗マットは、該水稲用の育苗
マットにおける培地が、イソブチリデンジウレアを坦持
するロックウールによって構成されているものであり、
また、末弟２の発明の水稲用の育苗マットは、該水稲用
の育苗マットにおける培地が、イソブチリデンジウレア
と、鉄との間にキレートな生成する性質を有する有機酸
と、硫酸鉄とを坦持するロックウールによって構成され
ているものである。In addition, the number of germination, dry weight, fullness,
The values for plant height and P2O5 content are comparative values when the conventional rice seedling mat shown in Comparative Example 1 is taken as 100, and the test results for the presence of Fusarium and Rhizopus are as follows. , which is the result confirmed by a microscope. [Operations and effects of the invention] The rice seedling growing mat of the invention of the youngest brother 1 is characterized in that the medium in the rice seedling growing mat is composed of rock wool that supports isobutylidene diurea. It is something that
Further, in the rice seedling growing mat invented by the youngest brother 2, the medium in the rice seedling growing mat contains isobutylidene diurea, an organic acid that has the property of forming a chelate with iron, and iron sulfate. It is made up of supporting rock wool.
しかして、前記構成からなる本各発明の水稲用の育苗マ
ットにおいて、ロックウールからなる培地に坦持されて
いるイソブチリデンジウレアは、イソブチルアルデヒド
１分子と尿素２分子との縮合生成体たるインブチリデン
２尿素の粒状体であって、水に対して僅か宛しか溶解せ
ず、しかも、水に溶解した後には比較的速やかに加水分
解を受けて尿素とインブチルアルデヒドとに分解するの
で、加水分解によって生成した尿素が、湿潤状態に維持
され続ける水稲用の育苗マットにおいて緩効性の窒素肥
料として作用するものである。Therefore, in the seedling mats for paddy rice of the present invention having the above-mentioned configuration, isobutylidene diurea supported on the medium made of rock wool is imbutylidene diurea, which is a condensation product of one molecule of isobutyraldehyde and two molecules of urea. It is a granular form of urea, and it is only slightly soluble in water. Furthermore, after being dissolved in water, it undergoes hydrolysis relatively quickly and decomposes into urea and imbutyraldehyde, so it cannot be hydrolyzed. The urea produced by this process acts as a slow-release nitrogen fertilizer in rice seedling mats that are kept moist.
したがって、本各発明の水稲用の育苗マットにおいては
、育苗の開始から１０日目頃迄は従来の水溶性固形肥料
による肥料効果が利用し得るようにし、１０日目頃以降
には、前記イソブチリデンジウレアによる肥料効果を利
用し得るので、従来のロックウールを培地とする水稲用
の育苗マットにおける苗の育成における弊害、すなわち
、育苗の開始時から１〜５日頃の硫安。Therefore, in the seedling-raising mats for paddy rice of the present invention, the fertilizer effect of the conventional water-soluble solid fertilizer can be utilized until about the 10th day from the start of seedling-raising, and after the 10th day, the Since the fertilizer effect of butylidene diurea can be utilized, it is possible to avoid the harmful effects of ammonium sulfate on the cultivation of seedlings on conventional rock wool seedling mats as a medium, that is, around 1 to 5 days from the start of seedling cultivation.
燐酸１石灰等の水溶性肥料の濃度が高くなりがちになる
ことに起因する発芽むら、出芽不良。Uneven germination and poor germination caused by the tendency for the concentration of water-soluble fertilizers such as phosphoric acid 1 lime to become high.
等の弊害を無くするものであり、また、１０日目頃以降
の肥料濃度が著しく低下する肥料不足に起因する草丈の
不足、成育むら等の弊害を無くすものである。It also eliminates the disadvantages such as insufficient plant height and poor growth caused by insufficient fertilizer, where the concentration of fertilizer decreases significantly after about the 10th day.
また、前記水苔発明の水稲用の育苗マットにおけるロッ
クウールからなる培地に坦持されているイソブチリデン
ジウレアは、前記した通り、イソブチルアルデヒド１分
子と尿素２分子との縮合生成体たるインブチリデン２尿
素の粒状体であって、水に対して僅か宛溶解し、しかも
、水に溶解した後には比較的速やかに加水分解を受けて
、フザリウム菌やリゾプス菌に対スる制菌作用を有して
いるイソブチルアルデヒドを生ずるものであるから、前
記フザリウム菌やリゾプス菌による苗の発病を阻止する
作用が得られ、特に、培地を水稲苗の育成に適したｐＨ
５程度の酸性側に維持した場合に、前記フザリウム菌や
リゾプス菌による苗の発病を阻止することのより優れた
作用が得られるものである。In addition, as described above, the isobutylidene diurea supported on the medium made of rock wool in the paddy rice seedling growing mat of the sphagnum moss invention is imbutylidene diurea, which is a condensation product of one molecule of isobutyraldehyde and two molecules of urea. It is a granular form of urea that is slightly soluble in water, and after being dissolved in water, it undergoes hydrolysis relatively quickly and has a bacteriostatic effect against Fusarium and Rhizopus bacteria. Since it generates isobutyraldehyde, it has the effect of inhibiting the onset of disease in seedlings caused by the aforementioned Fusarium bacteria and Rhizopus bacteria.
When maintained on the acidic side of about 5, a more excellent effect of preventing the onset of disease in seedlings caused by the Fusarium fungi and Rhizopus fungi can be obtained.
また、末弟２の発明の水稲用の育苗マットにおいては、
ロックウールからなる培地を水稲苗の育成に好適なｐＨ
５程度の酸性側に維持するための酸性化剤として、鉄と
の間にキレートを生成する性質を有する有機酸と硫酸鉄
とが坦持されているので、従来の水稲用の育苗マットに
おいて、硫酸鉄を使用した場合に肥料成分の１つである
燐酸との間に不溶性の燐酸鉄を生成し、水稲苗による燐
酸の吸収を妨げるというような状態が解消され、水稲苗
による燐の良好な吸収がなされ、水稲苗の健全な成育が
得られるものである。In addition, in the seedling mat for paddy rice invented by the youngest brother 2,
A medium made of rock wool has a pH suitable for growing rice seedlings.
As an acidifying agent to maintain the acidity level of about 5, iron sulfate and an organic acid that has the property of forming a chelate with iron are supported, so in conventional rice seedling growing mats, When iron sulfate is used, insoluble iron phosphate is produced between it and phosphoric acid, which is one of the fertilizer components, and this prevents the absorption of phosphoric acid by rice seedlings. Absorption is achieved and healthy growth of paddy rice seedlings is achieved.
特許出願人 日東紡績株式会社Patent applicant: Nittobo Co., Ltd.
Claims (2)
を培地とすることを特徴とする水稲用の育苗マット。(1) A seedling mat for paddy rice, characterized by using rock wool supporting isobutylidene diurea as a medium.
を生成する性質を有する有機酸と、硫酸鉄とを坦持する
ロックウールを培地とすることを特徴とする水稲用の育
苗マット。(2) A seedling mat for paddy rice, characterized in that the culture medium is rock wool that supports isobutylidene diurea, an organic acid that has the property of forming a chelate with iron, and iron sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63142036A JPH01312932A (en) | 1988-06-09 | 1988-06-09 | Seedling raising mat for paddy rice plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63142036A JPH01312932A (en) | 1988-06-09 | 1988-06-09 | Seedling raising mat for paddy rice plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01312932A true JPH01312932A (en) | 1989-12-18 |
| JPH0426801B2 JPH0426801B2 (en) | 1992-05-08 |
Family
ID=15305883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63142036A Granted JPH01312932A (en) | 1988-06-09 | 1988-06-09 | Seedling raising mat for paddy rice plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01312932A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5497262A (en) * | 1978-01-13 | 1979-08-01 | Mitsubishi Chem Ind | Molded fertilizer |
| JPS5561716A (en) * | 1978-11-01 | 1980-05-09 | Mitsubishi Chem Ind | Fertilizing method for sloped land |
| JPS5658411A (en) * | 1979-10-19 | 1981-05-21 | Yamamoto Kyoshi | Hillside fertilizing method and its material |
| JPS5921588A (en) * | 1983-06-16 | 1984-02-03 | 山本 清 | Slope fertilizing method and material |
| JPS62220125A (en) * | 1986-03-18 | 1987-09-28 | 新日鐵化学株式会社 | Production of plant growing medium |
-
1988
- 1988-06-09 JP JP63142036A patent/JPH01312932A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5497262A (en) * | 1978-01-13 | 1979-08-01 | Mitsubishi Chem Ind | Molded fertilizer |
| JPS5561716A (en) * | 1978-11-01 | 1980-05-09 | Mitsubishi Chem Ind | Fertilizing method for sloped land |
| JPS5658411A (en) * | 1979-10-19 | 1981-05-21 | Yamamoto Kyoshi | Hillside fertilizing method and its material |
| JPS5921588A (en) * | 1983-06-16 | 1984-02-03 | 山本 清 | Slope fertilizing method and material |
| JPS62220125A (en) * | 1986-03-18 | 1987-09-28 | 新日鐵化学株式会社 | Production of plant growing medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0426801B2 (en) | 1992-05-08 |
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