JPH0438367B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) This invention is aimed at cultivating seedlings with soil in units of planted plants.
A space row part that does not form a collapsible pot body is connected between the rows of pot bodies of a group pot body for raising and transplanting seedlings, in which a large number of pot bodies formed of paper or a thin film like paper are connected and assembled. This invention relates to a collective pot body for raising and transplanting seedlings, in which the area of each pot body is substantially expanded. (Prior art) Conventionally, as a container for raising and transplanting rice seedlings such as paddy rice, vegetables, tobacco, etc., a number of open and bottomless paper pots are connected together to form a seedling raising container, and each pot is filled with soil at the time of transplantation. A method of cultivating and transplanting is being used. These paper pots have different sizes depending on the crop to be raised, the seedling growing period, etc., but in order to obtain larger transplanted seedlings, a pot with a corresponding medium capacity is used. On the other hand, when growing rice in cold regions, the key is to get the ears to appear within the safe heading period of the region.To do this, it is desirable that the seedlings be advanced in age at the time of planting, and the cost of seedlings should also be lower than the initial cost of the seedlings. The trend is to gradually use larger seedlings as transplants, from young seedlings with around 2.5 leaves, to medium-sized seedlings with 3 to 3.5 leaves, and then to adult seedlings with 3.6 or more leaves. (Problems to be Solved by the Invention) As a means of growing adult seedlings, it is possible to expand the growing area per seedling unit in the nursery, increase the amount of medium per seedling unit, and extend the seedling growing period. This is the biggest cause, and the best measure is to reduce the amount of seeds per seedling container. Therefore, in order to obtain mature seedlings, it is necessary to enlarge the pot and increase the area and capacity for raising individual seedlings. However, as a result, the amount of soil packed in the aggregate of seedling pots increases, which has a significant negative impact on workability. It becomes something that affects people. (Means for Solving the Problems) As a result of various studies on collective pot bodies that do not have the above-mentioned drawbacks, the inventor has developed a pot made of square or hexagonal hollow cylinders made of paper or a thin paper-like film that does not rot during seedling-raising. A predetermined number of pot bodies are connected in series using water-soluble glue, and a predetermined number of rows of pot bodies are laminated and adhered using the same water-soluble glue. By attaching a foldable rectangular hollow body with the same length and height as the row of pot bodies, which is made up of an upper surface of a predetermined width and four circumferential sides with paper or paper-like thin film that easily decomposes, a collective pot body can be created. When used, the hollow body is expanded along with the pot body, and the seedling soil is filled only into the pot body, expanding the growth area of each planted plant and raising the seedlings for about 40 days, which is the normal period for raising adult seedlings, to produce large seedlings. At the time of transplantation, the hollow body is rotted and dismantled by irrigation during seedling raising, and the transplanting operation using a transplanter can be done without the hollow body part. (Function) As shown in the drawings, the pot body 1, which is a hollow cylinder, is made of paper that does not rot during the seedling-raising period, such as kraft paper treated with antiseptic treatment, or a thin film of synthetic fiber paper. The pot bodies 1 are glued in series with water-soluble glue to form one row of pot bodies. Next, one row of pot bodies is laminated and pasted in a predetermined number of rows, but at this time, between the rows, the upper surface of the pot and the cross section of a predetermined width made of paper that easily rots during the seedling-raising period, such as kraft paper that has not been treated with rot-resistant treatment, is placed. A rectangular hollow body 2 formed from four circumferential sides having approximately the same height as the body 1 is inserted and adhered with water-soluble glue. Since this collective pot body 3 is formed of a thin film, if it is folded up from time to time and unfolded when in use,
The hollow body 2 is also expanded in the same way as the pot body 1, and the hollow body 2 that is expanded to a predetermined width always appears on the side surface of one row of pot bodies, and a group pot is created in which the hollow body 2 is inserted between each row of pot bodies. Even if this is placed in a seedling box 4 and the pot 1 is filled with seedling soil 5, the hollow body 2 will maintain its hollow portion, resulting in a seedling growing state with an expanded growing area. It is intended to hold the following. (Example) The details will be further shown below using Examples. 1 Paddy rice test A square pot 1 with a side of 14 mm and a height of 28 mm was constructed using vinylon mixed kraft with a basis weight of 60 g/m ² as rot-resistant paper, and water-soluble glue was applied to one side of the pot 1.
A 10% aqueous solution of PVA-205 (trade name, manufactured by Kuraray Co., Ltd.) was applied, and 20 pot bodies were sequentially arranged in one row.
Next, one row of pot bodies is laminated in 38 layers to form pot assembly 3.
Commercially available kraft paper with a basis weight of 50 g/m ² was used as paper that rots easily during the seedling-raising period between each row of narrow pot bodies, and a length of 280 mm x height of 28 mm x 1.
A rectangular hollow body 2 having the width shown in the table was formed and inserted and pasted. Next, each group pot body 3 is unfolded, each pot body 1 is filled with seedling-raising soil 5, three seeds of rice are sown in each pot body 1, and seedling-raising underlay paper Kurapupy (trade name, manufactured by Kuraray Co., Ltd.) is spread on the base plate. They set up a plant and raised seedlings. The results are shown in Table 1.

The pot aggregates in [Table] were used as a control example.
As shown in the above example, each pot 1 provided with hollow bodies 2 without filling seedling soil 5 between one row of each pot has the same seedling growing soil as the control pot 1 without hollow bodies 2. Although there is a difference in the number of leaves and the number of days for raising seedlings, there is a noticeable difference in growth performance in terms of number of leaves and dry weight.
Adult seedlings with 3.8 leaves can be produced by growing the seedlings for about 42 days. In this way, the cluster pot 3 equipped with the hollow bodies 2 that have been grown to full-grown seedlings can be separated by rotting and dismantling, so the cluster pot 3 on the base plate is first moved from both ends to the center. Place the 42-day-old seedlings of No. 2 in Table 1 on the rice transplanter by pressing the rotten hollow bodies between each row of pots into a folded shape and keeping each row of pots in close contact. Although it was subjected to mechanical transplantation, the vertical length and width are the same as the conventional grouping pot body 3 because the hollow body 2 is compressed, and the weight is also the same as the amount of filling soil 5. The porting work was completed without any trouble. 2 Lettuce Test The same paper as in Example 1 was used as the rot-resistant paper constituting the pot body 1 and the paper that easily rots during the seedling-raising period to form the hollow body 2. The size of pot body 1 is 20 mm square x 30 mm high, and 14 pot bodies 1 are glued together using water-soluble glue (PVA-205) in accordance with Nitsuten paper pot standard SM2406 (product name: Nippon Beet Sugar Co., Ltd.). When laminating and pasting 20 rows of pot bodies, a rectangular hollow body 2 having a top surface width of 10 mm and a length of 280 mm was inserted and pasted between each row of pot bodies. Next, the collective pot body was unfolded, and the field soil was sieved at 5 mm as seedling-raising soil 5, and N, P ₂ O ₅ , and K ₂ O were each added to the soil.
300 ppm was added and filled into pot body 1 from above. At this time, since the upper surface of the hollow body 2 was closed, soil did not enter, and a hollow part with a width of 10 mm was maintained between each row of pot bodies. Two lettuce seeds (variety: Ballard) were sown in each pot 1, and the seedlings were thinned out after 15 days to grow as single plants for 45 days. The transplanting work was done manually, but because of the hollow bodies 2 placed between each row of pots, there was no intertwining of the leaves between adjacent rows, and although the seedlings were larger than those of conventional clustered pots, The porting work went extremely smoothly. (Effects) This invention makes it possible to easily grow mature seedlings without changing the seedling-raising conditions such as the seedling-raising period while suppressing the increase in the weight of the filled seedling-raising soil by making the pot volume the same as that of the conventional collective pot body. Moreover, when it comes to paddy rice, it can be used in a rice transplanter with the same ease of operation as a conventional pot assembly. In addition, when used for field crops such as lettuce, Chinese cabbage, and cabbage, conventional clustered pots often cause the stems and leaves to get entangled between adjacent pots, worsening workability. This prevents entanglement while producing large seedlings.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a pot assembly according to the present invention, and FIG. 2 is a longitudinal cross-sectional view of the pot assembly according to the invention in a state of use. 1... Pot body, 2... Rectangular hollow body, 3... Collective pot body, 4... Seedling growing box, 5... Seedling growing soil.

Claims (1)

[Scope of Claims] 1. In a collective pot in which a large number of cylindrical pots made of paper or paper-like thin film that do not rot during the seedling-growing period are connected in an orderly manner vertically and horizontally, the seedling-growing period is set between rows of pots. A collective pot for raising and transplanting seedlings with space rows formed between rows of pots, characterized by having a rectangular hollow body forming space rows made of easily decomposed paper or a thin film such as paper. . 2. Claims characterized in that the space rows provided between the rows of pots are made of paper or a paper-like thin film that easily decomposes during the seedling-raising period, and are rectangular hollow parts consisting of an upper surface and a peripheral side surface. The collective pot body for raising and transplanting seedlings according to item 1.