JP2013169176A - Method for raising seedling of plant and method for cultivating plant - Google Patents
Method for raising seedling of plant and method for cultivating plant Download PDFInfo
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Abstract
Description
本発明は、微生物又は微生物の成分の水熱反応処理物を使用した植物の育苗方法、及び植物の栽培方法に関する。 The present invention relates to a method for raising a plant using a microorganism or a hydrothermal reaction product of a component of a microorganism, and a method for cultivating a plant.
サツマイモ（甘藷）は、干ばつの続く気候にも適した作物種として知られており、塊根が肥大する肥大期において高温及び少雨となる西南暖地の気候での栽培に適しているとされる。このため、サツマイモの全国総収量８６．４万トンのうち、約５３％に相当する４５．８万トンは九州地方で収穫されている（平成２２年農林水産省統計データ）。
一方、サツマイモは高温期における多雨条件での栽培には適していないとされる。実際、平成２２年においては、夏季の多雨と日照不足により、収穫量が前年の収穫量の２０％となる等、大幅な減収となった。このような状況で、今後、高温期の多雨条件においても栽培することが可能な、サツマイモの栽培技術が求められている。
更に、サツマイモの栽培については、気候条件以外の問題も近年指摘されている。
例えば、昨今、日本では、米価が低く抑えられているため、稲作による農業経営が成り立たない状況が続いており、耕作放棄された水田が目立つようになっているが、水田が耕作放棄される理由の一つとして、水稲に代わる有利な営農作物が少ないことが挙げられている。実際に、九州地方では、前述のとおり気候自体はサツマイモの栽培に適してはいるものの、水田転換畑においては土壌が水分過多になりやすく、根腐れ症が多発してサツマイモを含む作物の栽培への大きな障害となっている。
植物の効率的な栽培方法に関しては、例えば、特許文献１に、植物体地上部及び根部への物理的損傷に対する、植物体が本来有する恒常性維持機能に着目し、通常栽培条件下における生産性の高い苗を育成可能な挿し木育苗方法が開示されている。
Sweet potato is known as a suitable crop species even in a drought-prone climate, and is said to be suitable for cultivation in a warm climate in the southwestern region where high temperatures and light rain occur during the growing season when tuberous roots are enlarged. For this reason, 45.8 million tons, equivalent to about 53%, of the total yield of sweet potatoes of 86.4 million tons are harvested in the Kyushu region (2010 statistical data from the Ministry of Agriculture, Forestry and Fisheries).
On the other hand, sweet potatoes are not suitable for cultivation under heavy rain conditions in the high temperature season. In fact, in 2010, due to heavy summer rain and lack of sunshine, the yield fell significantly, with 20% of the previous year's harvest. Under such circumstances, there is a need for sweet potato cultivation technology that can be cultivated even under heavy rain conditions in the high temperature season.
Furthermore, problems other than climatic conditions have been pointed out in recent years for sweet potato cultivation.
For example, in recent years, rice prices have been kept low in Japan, so the situation where farming by rice farming has not been possible has continued, and paddy fields that have been abandoned have become prominent. Why paddy fields have been abandoned One of them is that there are few advantageous farming crops to replace paddy rice. In fact, in the Kyushu region, as mentioned above, the climate itself is suitable for sweet potato cultivation. Has become a major obstacle.
Regarding the efficient cultivation method of plants, for example, Patent Document 1 focuses on the homeostasis maintenance function inherent to the plant body against physical damage to the above-ground part and root part of the plant body. A cutting seedling raising method capable of growing a high seedling is disclosed.
しかしながら、特許文献１の方法は、発根量を増大させる方法ではあっても、根を塊根形成根へと変化させるための方法ではなかった。例えば、サツマイモ等の塊根形成においては、塊根形成に必要な細胞***と細胞肥大に植物ホルモンが関与しているとされ、根から塊根形成根への変化を生じさせるためには、植物体内部の植物ホルモンのバランスを整える必要があるとされる。
従って、本発明は、一般に定植時の地温に依存するとされる塊根形成の誘導を育苗期に行う技術と、塊根を肥大させるために必要な根圏環境の制御技術を提供することにより、水分の多い土壌においても安定した収量で塊根を収穫可能な植物の育苗方法及び栽培方法を提供することを目的とする。
However, the method of Patent Document 1 is not a method for changing roots to tuberous roots even though it is a method for increasing the amount of rooting. For example, in the formation of tuberous roots such as sweet potatoes, plant hormones are said to be involved in cell division and cell hypertrophy necessary for tuberous root formation, and in order to cause changes from roots to tuberous roots, It is said that plant hormones need to be balanced.
Therefore, the present invention provides a technique for inducing tuberous root formation, which is generally dependent on the soil temperature at the time of planting, during the seedling raising stage and a technique for controlling the rhizosphere environment necessary for enlarging the tuberous root. An object of the present invention is to provide a method for raising and cultivating a plant capable of harvesting tuberous roots with a stable yield even in a large amount of soil.
本発明の発明者らは上記課題に鑑み、鋭意研究を行った。その結果、微生物又は微生物の成分の水熱反応処理物を使用することにより、水分の多い土壌においても安定した収量で塊根を収穫可能であることを見出し、本発明を完成するに至った。具体的には、本発明は以下のものを提供する。 The inventors of the present invention have conducted extensive research in view of the above problems. As a result, it has been found that by using a microorganism or a hydrothermal reaction processed product of a component of a microorganism, it is possible to harvest tuberous roots with a stable yield even in soil with much moisture, and the present invention has been completed. Specifically, the present invention provides the following.
本発明の第一の態様は、根部を完全に又は部分的に除去した植物体と、微生物又は微生物の成分の水熱反応処理物と、を接触させる、植物の育苗方法である。
本発明の第二の態様は、根部を完全に又は部分的に除去した植物体を、微生物又は微生物の成分の水熱反応処理物を含有する土壌にて栽培する、植物の栽培方法である。
A first aspect of the present invention is a method for raising a seedling of a plant, wherein a plant body from which roots have been completely or partially removed is contacted with a hydrothermal reaction product of microorganisms or components of microorganisms.
The second aspect of the present invention is a method for cultivating a plant, wherein a plant body from which roots have been completely or partially removed is cultivated in soil containing a microorganism or a hydrothermal reaction treated product of a component of the microorganism.
本発明の植物の育苗方法においては、微生物又は微生物の成分の水熱反応処理物を、根部を完全に又は部分的に除去した植物体に接触させるので、挿し木によって得られる苗の発根量を増大させることができると共に、根を速やかに塊根形成根に変化させることができる。
また、本発明の植物の栽培方法においては、根部を完全に又は部分的に除去した植物体を、微生物又は微生物の成分の水熱反応処理物を含有する土壌にて栽培するので、作物の早期収穫と収量の増大が可能となると共に、夏季における多雨条件での栽培や、水田転換畑での栽培等、土壌水分の高い条件での栽培においても、安定した収量を確保することができる。
In the plant raising method of the present invention, the hydrothermal reaction processed product of microorganisms or microbial components is brought into contact with a plant body from which roots have been completely or partially removed. In addition to being able to increase, the roots can be rapidly changed to tuberous root forming roots.
Further, in the plant cultivation method of the present invention, the plant body from which the root portion has been completely or partially removed is cultivated in the soil containing the microorganism or the hydrothermal reaction treated product of the component of the microorganism, so that Harvesting and yield can be increased, and a stable yield can be secured even in cultivation under conditions of high soil moisture such as cultivation under heavy rain conditions in summer and cultivation in paddy field conversion fields.
以下、本発明の第一の態様である植物の育苗方法について詳細に説明する。 Hereinafter, the plant seedling raising method which is the first aspect of the present invention will be described in detail.
＜植物の育苗方法＞
本発明の植物の育苗方法は、根部を完全に又は部分的に除去した植物体と、微生物又は微生物の成分の水熱反応処理物とを、接触させることを特徴とする。
［根部を完全に又は部分的に除去した植物体］
根部を完全に又は部分的に除去した植物体を得る方法としては、従来公知の挿し木栽培の際に行われているような、母株の一部を切り取って採取する方法を挙げることができる。一般に、根部を完全に又は部分的に除去した植物体においては、新たな根は葉の基部より発根する傾向にあるため、根部を除去した植物体は一枚以上の葉を有していることが好ましい。根部を除去した植物体が有する一枚以上の葉は、部分的に切り取られていてもよい。また、根部を除去した植物体を用いて育苗する過程において、より多くの腋芽を生じさせる目的で、根部を除去した植物体の頂芽を完全に除去しておくことが好ましい。
なお、本発明の植物の育苗方法を適用する植物が蔓性のものである場合、一つの母株から、根部を有さない多数の植物体を得ることができるため、効率的である。
本発明の植物の育苗方法を適用する対象となる植物としては、特に限定されるものではなく、一般に根菜類として知られている植物を挙げることができる。具体的には、ダイコン、ニンジン、ゴボウ、カブ、ジャガイモ、サツマイモ、サトイモ、ショウガ、タマネギ、ラッキョウ等を挙げることができるが、これらの中でも特に、ジャガイモ、サツマイモ、サトイモ等のイモ類が好ましく、サツマイモが更に好ましい。
<Plant raising method>
The plant raising method of the present invention is characterized in that a plant body from which roots have been completely or partially removed is brought into contact with a microorganism or a hydrothermal reaction-treated product of a component of the microorganism.
[Plant with roots removed completely or partially]
Examples of a method for obtaining a plant from which roots have been completely or partially removed include a method in which a part of a mother stock is cut out and collected as is conventionally performed in cutting cultivation. In general, in plants with roots completely or partially removed, new roots tend to root from the base of leaves, so plants with roots removed have one or more leaves. It is preferable. One or more leaves of the plant body from which the root portion has been removed may be partially cut off. Moreover, in the process of raising seedlings using a plant from which the root has been removed, it is preferable to completely remove the top bud of the plant from which the root has been removed for the purpose of producing more buds.
In addition, when the plant to which the plant seedling method of the present invention is applied is a vine, it is efficient because a large number of plants having no root can be obtained from one mother strain.
The plant to which the plant raising method of the present invention is applied is not particularly limited, and can include plants generally known as root vegetables. Specific examples include radish, carrot, burdock, turnip, potato, sweet potato, taro, ginger, onion, and ragweed. Is more preferable.
［微生物又は微生物の成分の水熱反応処理物］
本発明において使用される微生物又は微生物の成分の水熱反応処理物は、微生物又は微生物の成分を、所定の条件下で過熱水蒸気へ暴露することにより得られるものである。
水熱反応処理に供するために用いられる微生物としては、特に限定されるものではなく、従来公知の微生物材料を用いることができるが、安全性が高く、且つ消費者等にも受け入れられやすいことが予測されることから、酵母を使用することが好ましい。酵母としては、水熱反応処理物を製造するために特に培養されたものであってもよいが、廃物利用及び廃棄物の廃棄コスト低減の観点から、ビール、清酒、焼酎、味噌、醤油等の醸造物の製造の際に使用され、廃棄となった酵母を用いることが好ましい。
微生物として酵母を使用する場合、酵母全体を利用してもよいし、酵母抽出物や、酵母抽出物を製造する際に生成する酵母の細胞壁を使用してもよい。これらの酵母及び酵母の成分は、泥状のもの、圧搾して水分を減らしたもの、乾燥して更に水分を減らしたもの、粉状のもの、液中に懸濁させたもの等どのようなものであってもよい。具体的に、好ましい酵母又は酵母の成分としては、泥状ビール酵母、圧搾ビール酵母、乾燥ビール酵母、ビール酵母懸濁液、乾燥酵母細胞壁、及びビール酵母含有無機物等を挙げることができる。
本発明において微生物又は微生物の成分の水熱反応処理物を提供する際に使用される過熱水蒸気とは、１００℃以上の高温の水蒸気を指す。特に、本発明においては、水熱反応処理とは、好ましくは１２０℃以上２２０℃以下、より好ましくは１５０℃以上２１０℃以下の過熱水蒸気で行われる処理を指す。また、水熱反応処理の際の圧力は、好ましくは０．９ＭＰａ以上１．９ＭＰａ以下、より好ましくは１．２ＭＰａ以上１．８ＭＰａ以下である。特に、圧力０．９ＭＰａ以上１．９ＭＰａ以下且つ１２０℃以上２２０℃以下で行われる水熱反応処理が好ましく、０．９ＭＰａ以上１．９ＭＰａ以下且つ１５０℃以上２１０℃以下で行われる水熱反応処理がより好ましく、１．２ＭＰａ以上１．８ＭＰａ以下且つ１５０℃以上２１０℃以下で行われる水熱反応処理が更に好ましい。
[Hydrothermal reaction processed product of microorganism or microbial component]
The microorganism or microbial component hydrothermal reaction-treated product used in the present invention is obtained by exposing a microorganism or microbial component to superheated steam under predetermined conditions.
The microorganism used for the hydrothermal reaction treatment is not particularly limited, and a conventionally known microorganism material can be used, but it is highly safe and easily accepted by consumers and the like. Since it is predicted, it is preferable to use yeast. The yeast may be one that has been cultured specifically for producing hydrothermal reaction products, but from the viewpoint of waste utilization and reduction of waste disposal costs, beer, sake, shochu, miso, soy sauce, etc. It is preferable to use yeast that has been used in the production of brewed products and discarded.
When yeast is used as a microorganism, the whole yeast may be used, or a yeast extract or a cell wall of yeast that is produced when producing a yeast extract may be used. These yeasts and yeast components can be mud, squeezed to reduce moisture, dried to further reduce moisture, powdered, suspended in liquid, etc. It may be a thing. Specific examples of preferable yeast or yeast components include mud beer yeast, pressed beer yeast, dry beer yeast, beer yeast suspension, dry yeast cell walls, and beer yeast-containing inorganic substances.
In the present invention, the superheated steam used when providing a hydrothermal reaction product of microorganisms or microbial components refers to high-temperature steam of 100 ° C. or higher. In particular, in the present invention, the hydrothermal reaction treatment refers to treatment performed with superheated steam that is preferably 120 ° C. or higher and 220 ° C. or lower, more preferably 150 ° C. or higher and 210 ° C. or lower. The pressure during the hydrothermal reaction treatment is preferably 0.9 MPa or more and 1.9 MPa or less, more preferably 1.2 MPa or more and 1.8 MPa or less. In particular, a hydrothermal reaction treatment performed at a pressure of 0.9 MPa to 1.9 MPa and 120 ° C. to 220 ° C. is preferable, and a hydrothermal reaction treatment performed at 0.9 MPa to 1.9 MPa and 150 ° C. to 210 ° C. Is more preferable, and a hydrothermal reaction treatment performed at 1.2 MPa to 1.8 MPa and 150 ° C. to 210 ° C. is more preferable.
［微生物又は微生物の成分の水熱反応処理物を、根部を除去した植物体に接触させる態様］
本発明において、微生物又は微生物の成分の水熱反応処理物を、根部を除去した植物体に接触させる場合、その態様は特に限定されるものではない。即ち、本発明においては、微生物又は微生物の成分の水熱反応処理物を、根部を除去した植物体に直接接触させてもよいし、微生物又は微生物の成分の水熱反応物を希釈し、これを根部を除去した植物体に接触させてもよい。例えば、微生物又は微生物の成分の水熱反応処理物を含有する溶液中に、根部を完全に又は部分的に除去した植物体の少なくとも一部を浸漬することにより、当該植物体と、微生物又は微生物の成分の水熱反応処理物を接触させてもよく、根部を除去した植物を水耕栽培する場合に使用する水の中に、微生物又は微生物の成分の水熱反応処理物を添加することにより、当該水熱反応処理物を、根部を除去した植物体に接触させてもよい。
微生物又は微生物の成分を含有する溶液を調製する場合、その濃度は、５ｐｐｍ以上５０００ｐｐｍ以下であることが好ましく、１０ｐｐｍ以上２０００ｐｐｍ以下であることが更に好ましい。
［植物の育苗方法により得られた苗を用いた植物の栽培方法］
本発明は、上記の育苗方法により得られた苗を土壌にて栽培する、植物の栽培方法にも関する。
当該栽培方法によれば、本発明の植物の育苗方法により得られた苗を土壌にて栽培するので、根を速やかに塊根形成根に変化させることができる。
[Mode in which microorganism or microorganism-treated hydrothermal reaction product is brought into contact with plant body from which root is removed]
In the present invention, the mode is not particularly limited when the hydrothermal reaction product of the microorganism or the component of the microorganism is brought into contact with the plant body from which the root has been removed. That is, in the present invention, the hydrothermal reaction product of microorganisms or microbial components may be brought into direct contact with the plant body from which the roots have been removed, or the hydrothermal reaction product of microorganisms or microbial components may be diluted, May be brought into contact with the plant from which the root has been removed. For example, by immersing at least a part of a plant from which the root part has been completely or partially removed in a solution containing a hydrothermal reaction product of the microorganism or a component of the microorganism, the plant and the microorganism or microorganism By adding the hydrothermal reaction processed product of the microorganism or the component of the microorganism to the water used when hydroponically cultivating the plant from which the root part has been removed may be contacted The hydrothermal reaction treatment product may be brought into contact with the plant body from which the root portion has been removed.
When preparing a solution containing a microorganism or a component of a microorganism, the concentration is preferably 5 ppm to 5000 ppm, more preferably 10 ppm to 2000 ppm.
[Plant cultivation method using seedlings obtained by plant breeding method]
The present invention also relates to a plant cultivation method in which seedlings obtained by the above-described seedling raising method are cultivated in soil.
According to the said cultivation method, since the seedling obtained by the seedling raising method of the plant of this invention is cultivated in soil, a root can be rapidly changed into a tuberous root formation root.
次に、本発明の第二の態様である植物の栽培方法について詳細に説明する。なお、以下においては、本発明の第一の態様である植物の育苗方法と共通する構成については、その説明を省略することがある。 Next, the cultivation method of the plant which is the 2nd aspect of this invention is demonstrated in detail. In the following description, the description of the configuration common to the plant seedling method according to the first aspect of the present invention may be omitted.
＜植物の栽培方法＞
本発明の植物の育苗方法は、根部を完全に又は部分的に除去した植物体を、微生物又は微生物の成分の水熱反応処理物を含有する土壌にて栽培する。
微生物又は微生物の成分の水熱反応処理物を土壌中に混合する場合、１０ａあたり０．５ｋｇ以上５０ｋｇ以下の水熱反応処理物を混合することが好ましく、１．５ｋｇ以上１５ｋｇ以下の水熱反応処理物を混合することが更に好ましい。斯かる割合で土壌中に微生物又は微生物の成分の水熱反応処理物を混合することにより、作物の早期収穫と収量を効率的に増大させられると共に、夏季における多雨条件での栽培や、水田転換畑での栽培等、土壌水分の高い条件での栽培においても、より安定した収量を確保することができる。
<Plant cultivation method>
In the plant raising method of the present invention, a plant body from which roots have been completely or partially removed is cultivated in soil containing a microorganism or a hydrothermal reaction treated product of a component of the microorganism.
When the hydrothermal reaction product of microorganisms or microbial components is mixed in the soil, it is preferable to mix a hydrothermal reaction product of 0.5 kg to 50 kg per 10a, and a hydrothermal reaction of 1.5 kg to 15 kg. It is still more preferable to mix a processed material. By mixing microorganisms or hydrothermal reaction products of microbial components in the soil at such a ratio, the early harvest and yield of crops can be increased efficiently, and cultivation under heavy rain conditions in summer and paddy field conversion Even in cultivation under conditions with high soil moisture, such as cultivation in a field, a more stable yield can be ensured.
以下、本発明について実施例を挙げて詳細に説明する。なお、本発明は、以下に示す実施例に何ら限定されるものではない。 Hereinafter, the present invention will be described in detail with reference to examples. In addition, this invention is not limited to the Example shown below at all.
＜製造例１；微生物又は微生物の成分の水熱反応処理物の調製＞
多目的材料変換システム（留萌バイオマスセンター設備）の暖気運転後に補助水５００Ｌを投入し、下部温度が６７℃となったところで酵母細胞壁を５００ｋｇ投入した。これを１０分間混合し、過熱水蒸気の投入を開始した。ヘッドスペースに過熱水蒸気を投入しながら水温を上昇させると共に、上部排気バルブを開き、脱気操作を行うことで溶存酸素濃度を低下させた。圧力１．６ＭＰａ以上及び温度１８０℃の条件下で１０分間処理して酵母細胞壁の水熱反応処理物を得た。
<Production Example 1; Preparation of microorganisms or hydrothermal reaction processed products of components of microorganisms>
After the warm-up operation of the multipurpose material conversion system (Rumo Biomass Center facility), 500 L of auxiliary water was added, and when the lower temperature reached 67 ° C., 500 kg of yeast cell wall was added. This was mixed for 10 minutes, and the introduction of superheated steam was started. While introducing the superheated steam into the head space, the water temperature was raised and the upper exhaust valve was opened to perform the deaeration operation to lower the dissolved oxygen concentration. A 10-minute treatment was performed under conditions of a pressure of 1.6 MPa or more and a temperature of 180 ° C. to obtain a hydrothermal reaction product of yeast cell walls.
＜実施例１；挿し木による育苗方法＞
製造例１の酵母細胞壁の水熱反応処理物と、酵母の細胞壁の混合物を珪藻土に含浸させた材料を、１ｇ／Ｌ（酵母細胞壁の水熱反応処理物換算で５０ｐｐｍ）となるように水中に混合し、茨城県守谷市の研究実験ハウスにて、当該溶液中にサツマイモ品種：ベニアズマの根部を除去した植物体を浸漬させた（処理区Ａ）。更に、製造例１の酵母細胞壁の水熱反応物を、１０ｍＬ／Ｌ（酵母細胞壁の水熱反応処理物換算で１５００ｐｐｍ）となるように水中に混合し、同様に、茨城県守谷市の研究実験ハウスにて、当該溶液中にサツマイモ品種：ベニアズマの根部を除去した植物体を浸漬させた（処理区Ｂ）。挿し木５日後の発根数と最長根長を表１に示す。表１より明らかなように、処理区Ａ及びＢでは対照区（酵母細胞壁の水熱反応処理物等を添加していない水に植物体を浸漬させたもの）に比較して発根数が約４割から７割、最長根長が約２割以上増大した。その後、１２ｃｍ鉢に鉢上げして育苗し、７５日後に塊根形成数を調査した。表１より明らかなように、塊根数は、対照区に比べ処理区Ａ及びＢで約８割から１０割増加した。
表１
A material obtained by impregnating diatomaceous earth with a mixture of yeast cell wall hydrothermal reaction product of Production Example 1 and yeast cell wall in water so as to be 1 g / L (50 ppm in terms of hydrothermal reaction product of yeast cell wall). After mixing, the plant body from which the root part of the sweet potato variety: venezuma was removed was immersed in the solution in a research and experiment house in Moriya City, Ibaraki Prefecture (Treatment Zone A). Furthermore, the hydrothermal reaction product of the yeast cell wall of Production Example 1 was mixed in water so as to be 10 mL / L (1500 ppm in terms of the hydrothermal reaction product of the yeast cell wall), and similarly a research experiment in Moriya City, Ibaraki Prefecture. In the house, the plant body from which the root part of the sweet potato cultivar: venezuma was removed was immersed in the solution (treatment zone B). Table 1 shows the number of roots and the longest root length 5 days after cutting. As is clear from Table 1, the number of roots in the treated plots A and B was about the number of roots compared to the control plot (plants immersed in water to which the yeast cell wall hydrothermal reaction product was not added). From 40% to 70%, the longest root length increased by more than 20%. Thereafter, the seedlings were raised in 12 cm pots and grown, and the number of tuberous root formation was examined 75 days later. As is clear from Table 1, the number of tuberous roots increased by about 80% to 100% in the treatment groups A and B compared to the control group.
Table 1
以上の結果より、微生物又は微生物の成分の水熱反応処理物を、根部を除去した植物体と接触させて育苗することにより、挿し木時の根量を増大させられると共に、速やかな塊根形成を促進できることが分かった。 From the above results, it is possible to increase the amount of roots at the time of cutting and promote rapid tuber root formation by raising the hydrothermal reaction product of microorganisms or microbial components in contact with a plant body from which roots have been removed. I understood that I could do it.
＜実施例２；挿し苗による栽培方法＞
兵庫県福崎市の畑地及び水田転換機畑にて、製造例１の酵母細胞壁の水熱反応処理物と、酵母の細胞壁との混合物を珪藻土に含浸させた材料を、１０ａあたり６０ｋｇ投入して土壌中に混入させ、当該土壌中で、根部を除去したサツマイモ品種ベニアズマ品種の挿し苗（水熱反応処理物への接触処理をさせていないもの）を栽培して収量を調査した。結果を表２に示す。表２より明らかなように、畑地では、対照区（酵母細胞壁の水熱反応処理物を混合していない土壌中で植物体を栽培したもの）に比べ処理区で収量が５割以上増加した。また、水田転換畑では、対照区では根腐れ症により収穫量が皆無であったのに対し、対照区では畑地での対照区と同程度かそれよりも多く収穫することができた。
表２
In the field of Fukusaki City, Hyogo Prefecture, and the paddy field conversion field, 60 kg per 10a of a material obtained by impregnating a mixture of the yeast cell wall hydrothermal reaction treatment product of Example 1 and the yeast cell wall into 10 kg of soil The seedlings of the sweet potato varieties Venezuma varieties that had been mixed in and removed the roots were cultivated (those that had not been subjected to contact treatment with the hydrothermal reaction product), and the yield was investigated. The results are shown in Table 2. As is clear from Table 2, in the field, the yield increased by 50% or more in the treated plot compared to the control plot (plants grown in soil not mixed with the hydrothermal reaction treated product of the yeast cell wall). In the paddy field conversion field, the control plot had no yield due to root rot, whereas the control plot was able to harvest as much as or more than the control plot in the field.
Table 2
以上の結果より、微生物又は微生物の成分の水熱反応処理物を含浸させた材料を圃場に混入させることにより、サツマイモの早期収穫と収量増加を可能にした。また、夏季の多雨の水田転換畑のような水分の多い土壌においても、安定した収穫が可能となった。 From the above results, it was possible to early harvest and increase the yield of sweet potatoes by mixing the field impregnated with microorganisms or a material impregnated with hydrothermal reaction products of microbial components. In addition, stable harvesting was possible even in soil with a lot of water, such as a rainy summer paddy field.
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