JP3948282B2 - Seedling method - Google Patents

Description

ポットの浮力を考慮に入れて床土（培土）の比重を１．１０より大きくする。
【００１７】
こうして、前記プール育苗に際してポットが浮かないので、風で流されるようなことはなくなる。
【００１８】
比重１．１０より重くした培土は、土壌分類学上、砂土に属するものを紛砕し、１．５４ｍｍのふるいで選別した精土（Ａ）に粒径０．５ｍｍ以下のベントナイト（Ｂ）を混合し、肥料・水分を調整した比重１．１０より重いものであり、これはい草用培土である。
【００１９】
培土構成はつぎの通りである。
精土（Ａ）を重量比で９０〜１００％、ベントナイト（Ｂ）を重量比で０〜１０％を混合する。施肥量を窒素（Ｎ）−リン（Ｐ）−カリ（Ｋ）で、１５０ｍｇ〜５００ｍｇ／混合土１ｋｇとし、水分は３〜８％、ｐＨは５．０〜６．５、ＥＣ（電気伝導度；肥料濃度に比例）０．１０〜０．８ｍＳ／ｃｍ、仮比重（通常使用する状態での比重）１．１０〜１．３０とする。
【００２０】
また、粒径区分として
▲１▼ ２ｍｍ以上 ０〜０．５％
▲２▼ １〜２ｍｍ ５〜１５％
▲３▼ ０．５〜１ｍｍ １０〜３０％
▲４▼ ０．２５〜０．５ｍｍ １０〜３０％
▲５▼ ０．２５ｍｍ以下 ４０〜６０％
とした。
【００２１】
上記プール育苗用床土（培土）を用いた育苗方法により、水管理が容易になり、苗の生育度合いがポット内で揃うので育苗後の苗揃いが良くなり、前記した、いわゆるかまぼこ型の苗群にはならない。
【００２２】
また、前記培土の比重を１．１０以上にした上で、さらに、い草専用培土として、最大容水量を５０％以下にした培土を用いることもできる。
【００２３】
最大容水量が大きい培土として、ピートモスを主体としたセル培土が知られているが、該セル培土の最大容水量は１５０％以上であり、潅水回数を減らせる利点があるが、それは培土が過湿になりやすい欠点にもなり得る。また、通常の土を主体とした水苗培土の最大容水量は５０〜１００％であるが、この培土のメリットは、透水性が良く、程良く乾くことである。しかしこの培土を用いて育苗すると苗の水分状態により苗の植付性能が変化することがある。また、有機質を含む野菜の育苗に適した培土は最大容水量は８０〜１３０％であるが、この培土も透水性が良く、程良く乾くが、苗の水分状態により苗の植付性能が変化することがある。
【００２４】
本実施の形態で用いる培土は、上記各種培土とは異なり、その最大容水量を５０％以下とする。本実施の形態の培土は、見かけ上では水をたっぷり含み得るので、い草の植付性能が影響され難い。また、本実施の形態の培土は水持ちが著しく悪いため、雨降りとか潅水直後でもポット内の培土の固さがあまり変わらないので、天候や苗の水分条件に関係なく常にたっぷり（見かけ上）水を含んだ状態で圃場への植付が可能である。
【００２５】
本実施の形態の培土は乾き易い欠点があるが、むしろプール育苗後にポットから圃場にい草を移植するときに、適度に乾いているとポットの底から押出ピンで押し出し易い硬さがあるので好ましく、また、い草の育苗はプールや代かき後の水田で育苗するため、培土の乾きは関係なく、浸水状態で育苗が続行できる。
【００２６】
い草をポットへ挿苗した後又は参考例として播種後にプール育苗する際に、図６に示すようにポット２の下へ根域制限シート１１を敷設する方法を用いると、根張りが良く、従来のように６０日間育苗しなくても３０〜４０日の育苗で機械植が可能となる。
【００２７】
従って、苗の育苗から圃場への移植は次のような手順で行う。
１）ビニルシート等でプール用の育苗器３を設ける。
２）根域制限シート１１をプール用の育苗器３に敷設する。
３）株挿した後のい草又は参考例として播種後のい草のポット苗を根域制限シート１１上に設置する。
４）ポット２の上面まで水を入れて育苗する。
５）活着したら（又は新芽が出始めたら）、間断潅漑としてかけ流しを含めて育苗管理を行う。
【００２８】
上記育苗方法を実行するためには、プール式の育苗器３の深さをい草用ポット２の高さ以上にする必要がある。また、育苗中の高温や低温を避け、前記４）のステップを効果的にするために深水管理をする場合には、育苗器３の深さは深い程有利である。
【００２９】
従来は代かき後の圃場面に根域制限シート１１を敷設していたため、苗の運搬が容易でなかった上に、運搬に手間がかかり、苗の運搬時に圃場面上に足跡などで凹凸を付けることになり、圃場を荒らしてしまうなどの問題があったが、図６に示すように根域制限シート１１を用いることにより、圃場への苗の移植も容易になった。
【００３０】
また、図１に示すポット２内への培土の詰め方として、図７に手順の概略を示すように、２度に分けて土詰めする方法を用いることができる。１段目の土詰めではポット２の高さの略半分まで土を入れた後、鎮圧する。２段目はポット２の上面まで無鎮圧で土を入れる。
【００３１】
図７に示すように移動可能な土詰機１２上に多数のポット２を配置した育苗器３を多数並べて配置し、土詰機１２の進行方向に対して上流側に１段目用の培土供給用ベルトコンベア１４の供給部を配置し、下流側に２段目用の培土供給用ベルトコンベア１５の供給部を配置する。前記二つのベルトコンベア１４、１５の供給部の間の土詰機１２上に上流側からブラシ１７と鎮圧棒１８を配置する。ブラシ１７はポット２内に落下してきた培土をポット２の約半分の量にするために、掻き出すために用いる。また、鎮圧棒１８は２段目用の培土供給用ベルトコンベア１５の供給部に搬送させる前に、約半分になったポット内の床土を押し付けるために用いる。２段目用の培土供給用ベルトコンベア１５の供給部から培土が各ポット２内に充填されるが、ポット上面で培土を均平化するためのスクレーパー１９を設けている。
【００３２】
表１に前記鎮圧工程の有無と鎮圧工程が有る場合にどこで鎮圧を行うかの違いによる土抜け、水の浸透性及び挿苗工程での株挿し具合についてまとめて示す。
【００３３】
【表１】

【００３４】
表１によれば、鎮圧無しの場合と、全量ポットに培土を供給した後に鎮圧した場合とに比較して本発明（１段目の土詰めではポット高さの略半分まで土を入れた後に鎮圧し、２段目はポット上面まで無鎮圧で土を入れる方法）の場合は、全ての工程で良好な結果が得られた。
【００３５】
鎮圧無しの場合には、ポット２に土詰め後、苗の株挿しする前に、水にドブ漬けもしくはポット２の底面の穴から水を吸収させて土を膨軟にさせていたが、その際、ポット２の底部の穴から土が抜け落ちていた。しかし本発明の鎮圧工程を含む方法を実施することで、ポット２の底部の穴から培土が抜けることが無くなり、そのため苗の育苗条件の均一化が図れ、苗の植付性能が向上する。
また、全量ポット２に培土を供給した後に鎮圧した場合には、苗の株挿しが難しくなる。
【００３６】
また、図８に示すように、い草をプール育苗する際に、プール用資材２１の上に根域制限シート１１を敷き、該シート１１とポット２の底面の間にアンダトレイ２２を設けても良い。
【００３７】
上記構成によると、ポット２の底面の穴から出た根がアンダトレイ２２と根域制限シート１１の間で若干根が出た状態となるため、ポット苗植機（図示せず）の振動等で苗がポット２から抜け落ちるおそれが無くなる。
このとき、ポット２とアンダトレイ２２の合計高さよりも深いプール用の育苗器を用いて育苗時の深水管理ができるようにする。
【００３８】
こうして、苗の低温時の凍結防止と高温時の水温の上昇防止により、安定した苗の生育が可能になる。
【００３９】
図９に示すように、い草を育苗する際のポット（図示せず）を多数配置するための育苗器３の複数の壁面３ａ〜３ｄのうち、少なくとも１つの壁面３ｂの高さが容易に変えられるプール用の育苗器３を用いることができる。
【００４０】
図９（ａ）は全体の斜視図、図９（ｂ）は図９（ａ）のＡ−Ａ線断面図である。図９（ｂ）に示すように、壁面３ａと壁面３ｂの接続部をファスナー状に捏属しておき、該ファスナー３ｅを適宜の長さだけ外すことで、プール状の育苗器３の水深さを調節することができる。
【００４１】
深水管理時（高温や低温の予防）にはファスナー３ｅを閉めて容器壁面３ｂの高さを他の壁面３ａ、３ｃ、３ｄと同じ高さにすることで管理できる。
【００４２】
また、浅水管理（机に酸素を送り、根張りを良くする）にはファスナー３ｅを任意の位置まで下げることで水面高さを調整できる。
また、かけ流し（低温による凍結防止）には、ファスナー３ｅを任意の位置まで下げ、水を常時入れ、水の移動により凍結を防止する。
【００４３】
このように、い草を育苗する際の育苗器３に関し、その複数の壁面３ａ〜３ｄのうち、少なくとも１つの壁面の高さが容易に変えられるようにすることで、深水管理や浅水管理が可能となり、プール内の水の深さを一定深さに保った状態で水のかけ流し管理等が容易に行えるようになり、育苗が容易になる。
【図面の簡単な説明】
【図１】 本発明の実施の形態の潅水する技術を用いてい草を育苗する方法の各工程を示す図である。
【図２】 本発明の実施の形態の育苗器の一部破断側面図である。
【図３】 図２の育苗器の一部平面図である。
【図４】 図２の育苗器の側面図である。
【図５】 図２の育苗器の平面図である。
【図６】 本発明の実施の形態の育苗器の側面図である。
【図７】 本発明の実施の形態の育苗器への土詰め装置の一部側面図である。
【図８】 本発明の実施の形態の育苗器内へのポット載置時の側断面図である。
【図９】 本発明の実施の形態の育苗器の全体斜視図（図９（ａ））とそのＡ−Ａ線断面図（図９（ｂ））である。
【符号の説明】
２ ポット ２a 底穴
３ 育苗器 ３ａ〜３ｄ 育苗器壁
３ｅ ファスナー ３ｘ 育苗器左右両側縁
３ｙ 繰出穴 ４ 貯水器
５ ポット上縁 ６ 床土
７ 土壌 ８ 均平板
９ 水 １０ い草苗
１１ 根域制限シート １２ 土詰機
１４、１５ 培土供給用ベルトコンベア
１７ ブラシ １８ 鎮圧棒
１９ スクレーパー ２１ プール用資材
２２ アンダトレイ[0001]
The present invention relates to a nursery how to seedling by挿苗seedlings such as grass seedlings each pot of seedlings unit.
[0002]
[Prior art]
There is known a method of raising “weeds” or the like using a technique of irrigating water after putting grass seedlings in each pot using a seedling device in which a large number of pots are arranged in parallel.
The seedling raising method is a method in which several soil grass stocks are planted using a mud-like floor soil filled with soil and immersed in water in each pot of a seedling device. Grass seedlings to be nurtured in the pot can be further cultivated and bred using the same seedling device. In some cases, the seedlings are sown in place of the seedlings. In this case, the seedling in the pot is covered with soil, and then the seedling is irrigated to raise the seedlings. In this way, seedlings such as grass to be nurtured can be supplied to a seedling planting machine as a seedling planting device, and planted in a field.
[0003]
Although seedling in a pot and soaking in water is sometimes referred to as pool seedling, this method is easy to manage with water, and the seedlings are well prepared after seedling. In addition, the growth of the seedlings at the center in the longitudinal direction is faster than the growth of the seedlings at both ends of the pot, so that it does not become a so-called kamaboko type seedling group.
[0004]
[Problems to be solved by the invention]
In the conventional method for raising seedlings such as grass seedlings, when the seedling device is irrigated, if the floor soil in the pot is light, it may be washed away by the wind or may float on the water surface. For this reason, seeds of seeded or seeded pot seedlings may not germinate or seeded or seeded seedlings may not be nurtured. It is required to make the floor soil as light as possible in terms of transportation or seedling workability. However, if the floor soil becomes lighter, the pot after soiling may be washed away by the wind or may float in the pool.
[0005]
In addition, when soil having a low specific gravity is used, pots arranged in the pool are washed away because they are light when the pots after filling are placed in the pool and then water is added to the pool. In particular, in the case of raising seedlings using pots, if the pots are light, the box for transplantation in which a plurality of seedling raising devices composed of a large number of pots are arranged cannot be smoothly fed, and planting accuracy may be disturbed.
[0006]
An object of the present invention is to provide a pool seedling method never bed soil in each pot floats when raising seedling by irrigation to the seedling device after interpolation seedlings for each pot. Also, after filling the pot with soil, before inserting the seedlings, soak in water or absorb the water from the bottom hole of the pot to loosen the soil, but at this time, from the hole at the bottom of the pot There is a problem that the soil falls out. Therefore, a further object of the present invention is to provide a seedling raising method that prevents such soil escape, makes the seedling raising conditions uniform, and improves the seedling planting performance. Another object of the present invention is to provide a method for raising seedlings with good seedling insertion.
[0007]
[Means for Solving the Problems]
The above-described problem of the present invention is that a seedling pot placed in a pool-shaped seedling device having a plurality of wall surfaces and at least one of connecting portions between adjacent wall surfaces connected in a fastener shape has a particle size of 0.25 mm or less. After putting the soil with a specific gravity of 1.10 or more containing 40% by weight or more of soil up to about half of the height of the pot for raising seedlings and crushing the surface of the cultivation soil, the cultivation medium is further freed from the cultivated soil without pressure. approximately the height until it put soil filling step of the upper surface, and Hitoshitaira step of Hitoshitaira scraping the soil of the upper surface of the seedling pot, an immersion step of the seedling pot is immersed in water, the seedling pot pot It is solved by the seedling raising method of raising seedlings sequentially through the seedling insertion step of inserting a seedling into the seedling and the step of adjusting the water depth by appropriately changing the height of at least one wall surface of the seedling raising device with the fastener of the connection part. that. By using the above SL seedling method, even if the liquid level in the pool reaches the seedling device top, nursery instrument can not float. In addition, the soil is prevented from falling out from the hole at the bottom of the pot, and the stock insertion of the seedling is also improved.
[0008]
【The invention's effect】
By using the seedling raising method of the present invention, the seedling device is in a stable state in the pool, so that the growth of seedlings in the pot is uniform, and even if the seedling device is irrigated in the pool, the pot does not move This makes it easier to manage seedlings in pots. In addition, the soil is prevented from falling out from the hole at the bottom of the pot, and the stock placement of the seedling is also improved, so that the seedling raising conditions of the seedling can be made uniform and the seedling planting performance is improved.
In addition, since the height of at least one wall of the seedling device can be changed easily, deep water management and shallow water management are possible, and water flow management is performed with the water depth in the seedling device kept constant. Etc. can be performed easily, and seedling raising is facilitated.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
First, a method for raising grass using a technique of irrigating water after putting grass seedlings in each pot using a pot-type seedling device and filling them with soil will be described with reference to FIGS.
[0010]
The seedling raising device 3 is a synthetic resin molded product having a configuration in a plan view shape in which a large number of pots 2 having a capacity suitable for seedlings are arranged at regular intervals in the vertical and horizontal directions, and is configured to be flexible. At the bottom of each pot 2 to form a bottom hole 2a, both the can be submerged bed soil 6 is Dotsume, after raising seedlings, when loaded into a seedling planting machine (not shown) of the seedling device 3, A seedling extrusion paddle is pierced from the bottom bottom surface, and a portion of the nursery bed soil 6 can be pushed out of the pot 2 and planted on the soil surface.
[0011]
In FIG. 1, in the soil filling process A, dried soil 7 is supplied into each pot 2 of such a seedling breeder 3. In the leveling process B, the soil 7 on the upper surface of the seedling raising device 3 is scraped off and leveled by the leveling flat plate 8 so that the floor soil 6 in each pot 2 is uniformly filled. Next, in the dipping process C, the seedling device 3 filled with the floor soil 6 in this way is placed in a dish-shaped water reservoir 4 and immersed in water. The water 9 stored in the water reservoir 4 at an appropriate level in advance is submerged into the pot 2 from the bottom hole 2a to soften the floor soil 6 into a mud. By immersing in water, the floor soil 6 can be sufficiently absorbed with water, and the floor soil 6 can be made to have a desired softness.
[0012]
When the flooding reaches the upper surface of the floor soil 6 of the pot 2, the seedling raising device 3 is taken out of the water in the water reservoir 4, drained, and the seedling insertion step D is performed. In this seedling seedling process D, the roots of several seedlings 10 previously planted are inserted and planted into the 6 parts of the floor soil of each pot 2 from above. At this time, although the floor soil 6 part is soft, the insertion resistance of the grass seedlings 10 is relatively small, so that the seedlings are hardly broken and can be planted in an accurate seedling posture. Moreover, after planting, the planting posture of the seedling can be maintained and stabilized with the hardening of the floor soil 6. The method of raising seedlings with the pot immersed is sometimes referred to as pool raising.
[0013]
As a reference example, there is a method of sowing instead of the seedling. In this case, sowing is performed before the immersion step C. In the case of performing seeding may not through the dipping process C, but raising seedling period longer than the case without the immersing step C even when normally adopted seeding process by way of the dipping process C.
[0014]
After inserting the grass seedling 10 into each pot 2 of the seedling device 3, the seedling device 3 is moved to a seedling room (not shown) or the like to raise the seedling. When the grass seedling 10 is further reared, it can be transferred to another pot 2 of another seedling device 3 and transplanted for raising. When planting a grass seedling to be nurtured by the nursery device 3 in the field, the nursery device 3 is supplied together with the grass seedling 10 to a seedling planting machine (not shown) for planting. The floor soil 6 in each pot 2 is pushed out of the pot 2 together with the seedling 10 and planted on the soil surface by a planting device (not shown). A feeding hole 3y having a constant pitch is formed in the left and right side edges 3x of the seedling raising device 3. When the feeding hole 3y is supplied to the seedling planting machine, a feeding claw is engaged with the feeding hole 3y so The seedling raising device 3 is fed out at the timing.
[0015]
In order to prevent the inserted pot from floating and being swept away by wind when pooled seedlings, it is a major feature of the present embodiment that floor soil (culture soil) satisfying the following formula is used.
[0016]

Taking into account the buoyancy of the pot, the specific gravity of the floor soil (culture soil) is made larger than 1.10.
[0017]
In this way, since there is no float pot when the pool nursery, will not be such as Ru carried away by the wind.
[0018]
The soil that is heavier than the specific gravity of 1.10 is a bentonite (B) having a particle size of 0.5 mm or less to the fine soil (A) that has been crushed from sandy soil and sorted through a 1.54 mm sieve. It is heavier than the specific gravity of 1.10 adjusted by mixing fertilizer and water, and this is a soil for grass.
[0019]
The soil composition is as follows.
The fine soil (A) is mixed in a weight ratio of 90 to 100%, and the bentonite (B) is mixed in a weight ratio of 0 to 10%. The amount of fertilization is nitrogen (N) -phosphorus (P) -potassium (K), 150 mg to 500 mg / kg of mixed soil, moisture is 3 to 8%, pH is 5.0 to 6.5, EC (electric conductivity) ; Proportional to fertilizer concentration) 0.10 to 0.8 mS / cm, provisional specific gravity (specific gravity in a normal use state) 1.10 to 1.30.
[0020]
The particle size classification is as follows: (1) 2 mm or more 0-0.5%
▲ 2 ▼ 1-2mm 5-15%
(3) 0.5-1mm 10-30%
(4) 0.25-0.5mm 10-30%
▲ 5 ▼ 0.25mm or less 40-60%
It was.
[0021]
By the seedling method using the above-mentioned pool soil for seedling (culture soil), water management becomes easy and the seedling growth level is improved in the pot, so that the seedling alignment after the seedling is improved. Don't be a group.
[0022]
Moreover, after making the specific gravity of the said culture soil 1.10 or more, the culture soil which made the maximum water capacity 50% or less can also be used as culture soil only for grass.
[0023]
Cell culture mainly composed of peat moss is known as a culture medium with a large maximum water capacity, but the maximum water capacity of the cell culture medium is 150% or more, which has the advantage of reducing the number of irrigation times. It can also be a drawback that tends to get wet. Moreover, although the maximum water volume of the seedling culture soil mainly composed of normal soil is 50 to 100%, the merit of this culture soil is that water permeability is good and it is dried appropriately. However, seedling planting performance may change depending on the moisture condition of the seedling when seedling is grown using this soil. In addition, the soil suitable for raising seedlings of vegetables containing organic matter has a maximum water capacity of 80 to 130%, but this soil also has good water permeability and dries well, but the seedling planting performance varies depending on the moisture state of the seedling. There are things to do.
[0024]
The soil used in the present embodiment is different from the above-mentioned various soils, and the maximum water capacity is 50% or less. Since the soil of the present embodiment can contain a lot of water in appearance, the planting performance of grass is hardly affected. In addition, since the soil of this embodiment has extremely poor water retention, the soil hardness in the pot does not change much even after raining or irrigation, so plenty of (apparent) water is always available regardless of the weather and the moisture conditions of the seedlings. It can be planted in the field including
[0025]
Although the soil of this embodiment has a defect that it is easy to dry, it is rather preferable that when transplanting grass from the pot to the field after pool seedling, it is hard to extrude from the bottom of the pot with an extrusion pin. In addition, seedlings of grass are grown in pools or paddy fields after slashing, so that seedlings can continue to grow under water regardless of the dryness of the soil.
[0026]
When planting seedlings in a pot or when seeding a pool after sowing as a reference example , using a method of laying a root zone restriction sheet 11 under the pot 2 as shown in FIG. Thus, even if it does not raise a seedling for 60 days, it becomes possible to plant a machine by raising a seedling for 30 to 40 days.
[0027]
Therefore, the transplanting of seedlings from seedlings to the field is performed according to the following procedure.
1) A nursery device 3 for a pool is provided with a vinyl sheet or the like.
2) Lay the root zone restriction sheet 11 on the nursery device 3 for pool.
3) A potted seedling of weeds after planting or as a reference example is placed on the root zone restriction sheet 11.
4) Add water to the upper surface of the pot 2 and raise the seedling.
5) Once the plants have settled (or when new shoots have started to appear), perform seedling management including intermittent pouring as intermittent irrigation.
[0028]
In order to execute the seedling raising method, it is necessary to make the depth of the pool type seedling breeder 3 equal to or higher than the height of the pot 2 for grass. Further, when deep water management is performed in order to avoid the high temperature and low temperature during seedling and to make the step 4) effective, the depth of the seedling device 3 is more advantageous.
[0029]
Conventionally, the root zone restriction sheet 11 has been laid on the field scene after scribing, so it was not easy to transport the seedlings, and it took time to transport the seedlings. As a result, there was a problem of roughening the field, but using the root zone restriction sheet 11 as shown in FIG. 6 facilitated transplanting of seedlings to the field.
[0030]
In addition, as a method of filling the cultivated soil into the pot 2 shown in FIG. 1, as shown in FIG. 7, an outline of the procedure can be used. In the first stage, the soil is put to about half the height of the pot 2 and then crushed. In the second stage, the soil is put into the upper surface of the pot 2 without crushing.
[0031]
As shown in FIG. 7, a large number of seedling breeders 3 each having a large number of pots 2 arranged on a movable earth filling machine 12 are arranged side by side, and the first stage cultivation medium upstream of the traveling direction of the earth filling machine 12. A supply unit for the supply belt conveyor 14 is arranged, and a supply unit for the second stage culture supply belt conveyor 15 is arranged on the downstream side. A brush 17 and a pressure reducing rod 18 are disposed on the soil filling machine 12 between the supply portions of the two belt conveyors 14 and 15 from the upstream side. The brush 17 is used to scrape out the soil that has fallen into the pot 2 in order to reduce the volume of the soil to about half that of the pot 2. Further, the pressure reducing rod 18 is used to press the ground soil in the pot which has been halved before being conveyed to the supply section of the second stage soil supply belt conveyor 15. The soil is filled into each pot 2 from the supply section of the second-stage soil supply belt conveyor 15, and a scraper 19 is provided for leveling the soil on the upper surface of the pot.
[0032]
Table 1 summarizes the soil removal, water permeability, and the stock insertion condition in the seedling insertion process depending on the presence or absence of the suppression process and the suppression process where there is a suppression process.
[0033]
[Table 1]

[0034]
According to Table 1, compared to the case of no crushing and the case of crushing after supplying the soil to the whole amount of the pot, the present invention (after the soil is put to about half the pot height in the first stage of stuffing) In the case of the method of crushing and putting the soil without crushing to the upper surface of the pot in the second stage), good results were obtained in all steps.
[0035]
In the case of no crushing, after filling the pot 2 and before inserting the seedlings, it was soaked in water or water was absorbed from the hole in the bottom of the pot 2 and the soil was loosened. At that time, the soil had fallen from the hole at the bottom of the pot 2. However, by carrying out the method including the pressure-reducing step of the present invention, the culture soil does not come out from the hole at the bottom of the pot 2, so that the seedling raising conditions can be made uniform and the seedling planting performance is improved.
Moreover, when it suppresses after supplying culture medium to the whole quantity pot 2, it will become difficult to insert a seedling.
[0036]
Further, as shown in FIG. 8, when raising seedlings in a pool, a root area limiting sheet 11 may be laid on the pool material 21 and an under tray 22 may be provided between the sheet 11 and the bottom of the pot 2. good.
[0037]
According to the above configuration, since the roots that have come out from the hole in the bottom surface of the pot 2 are slightly rooted between the under tray 22 and the root area restriction sheet 11, vibrations of a pot seedling transplanter (not shown), etc. This eliminates the possibility that the seedling will fall out of the pot 2.
At this time, deep water management at the time of seedling can be performed by using a pool seedling device deeper than the total height of the pot 2 and the under tray 22.
[0038]
Thus, stable seedling growth can be achieved by preventing the seedling from freezing at a low temperature and preventing the water temperature from rising at a high temperature.
[0039]
As shown in FIG. 9, the height of at least one wall surface 3b easily changes among a plurality of wall surfaces 3a to 3d of the seedling raising device 3 for arranging a large number of pots (not shown) for raising seedlings. A pool nursery device 3 can be used.
[0040]
FIG. 9A is an overall perspective view, and FIG. 9B is a cross-sectional view taken along line AA in FIG. 9A. As shown in FIG. 9 (b), the connecting portion between the wall surface 3a and the wall surface 3b is attached in a fastener shape, and the water depth of the pool-shaped seedling device 3 is reduced by removing the fastener 3e by an appropriate length. Can be adjusted.
[0041]
At the time of deep water management (prevention of high temperature and low temperature), the fastener 3e can be closed and the height of the container wall surface 3b can be set to the same height as the other wall surfaces 3a, 3c, 3d.
[0042]
For shallow water management (feeding oxygen to the desk to improve the rooting), the water surface height can be adjusted by lowering the fastener 3e to an arbitrary position.
For pouring (preventing freezing due to low temperature), the fastener 3e is lowered to an arbitrary position, water is always put in, and freezing is prevented by moving the water.
[0043]
Thus, regarding the seedling raising device 3 when raising seedlings, deep water management and shallow water management are possible by making it possible to easily change the height of at least one of the plurality of wall surfaces 3a to 3d. As a result, it is possible to easily manage the water flow while keeping the depth of water in the pool at a constant depth, thereby facilitating raising seedlings.
[Brief description of the drawings]
FIG. 1 is a diagram showing each step of a method for raising grass using the irrigation technique according to an embodiment of the present invention.
FIG. 2 is a partially cutaway side view of the seedling raising device of the embodiment of the present invention.
FIG. 3 is a partial plan view of the seedling raising device of FIG. 2;
4 is a side view of the seedling raising device of FIG. 2. FIG.
FIG. 5 is a plan view of the seedling raising device of FIG. 2;
FIG. 6 is a side view of the seedling raising device according to the embodiment of the present invention.
[Fig. 7] Fig. 7 is a partial side view of the soil stuffing device for the seedling raising device of the embodiment of the present invention.
FIG. 8 is a side sectional view when the pot is placed in the seedling raising device of the embodiment of the present invention.
FIG. 9 is an overall perspective view (FIG. 9 (a)) and a cross-sectional view along line AA (FIG. 9 (b)) of the seedling raising device of the embodiment of the present invention.
[Explanation of symbols]
2 Pot 2a Bottom hole 3 Nursery device 3a-3d Nursery device wall 3e Fastener 3x Nursery device left and right edge 3y Feeding hole 4 Water reservoir 5 Pot upper edge 6 Floor soil 7 Soil 8 Flat plate 9 Water 10 Grass seedling 11 Root area restriction sheet 12 Soil Filling Machines 14 and 15 Belt Conveyor 17 for Soil Supply 17 Brush 18 Squeezing Rod 19 Scraper 21 Pool Material 22 Under Tray

Claims (1)

40% by weight or more of soil with a grain size of 0.25 mm or less in a pot for seedlings placed in a pool-shaped seedling device in which at least one of the connecting portions between adjacent wall surfaces has a zipper shape After containing soil with a specific gravity of 1.10 or more to about half the height of the pot for raising seedlings and crushing the surface of the cultivation soil, the soil is further reduced to the height of the upper surface of the pot for raising seedlings without further crushing. and soil filling process of Ru put,
Leveling step of scraping and leveling the soil on the upper surface of the pot for raising seedlings;
An immersion step of immersing the seedling pot in water;
An insemination step of inserting seedlings into the seedling pot;
Adjusting the water depth by appropriately changing the height of at least one wall surface of the seedling device by a fastener of the connection part; and
A seedling raising method characterized by raising seedlings sequentially .

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