JPS615705A - Plantation of turf seedling to bare land - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for planting turfgrass on bare land, and more specifically, it is a method for securing water retention in a seeding cultivation bed for various types of turfgrass and water retention in the rhizosphere after growth, so that it is extremely dry. This invention relates to a method of growing turfgrass by seeding on bare land in conditions where there is almost no rainfall, or on bare land where surface plants have been lost due to man-made or natural disasters.

Conventional technology: Low groundwater level (bare land in dry areas with little rainfall, bare land caused by loss of the surface plant layer due to man-made activities such as clearing or land reclamation, or natural disasters such as floods and typhoons) At present, turfgrass cultivation by seeding is rarely practiced.

This is because such bare soil does not contain clayey soil or organic matter, so the amount of water held in the surface layer is extremely small, and the soil particles are in close contact with each other, resulting in a small amount of pore space, so effective water is very limited. This is because it is difficult to satisfy all the requirements for seed germination, root establishment, and plant growth due to the fact that it has a low amount of water and poor fertilizer retention.

In vegetating turfgrass by the bare field seeding method, soil containing moisture and fertilizing ingredients is required, which requires bare soil plants and labor.

There is also a method of spreading asphalt emulsion underground to form a water stop layer (for example, "Greening the Desert" by Masamoto Shimizu, published by Nichichuo Koron-sha, February 1920). (Shinbun Shinsho, pp. 16-16g), this method is unsuitable because it is difficult to form a water stop layer in a position that is effective for both seed germination and root elongation using the sowing method. It is.

Problems to be Solved by the Invention As mentioned above, it is difficult to solve the problem in bare land under extremely dry conditions with almost no rainfall, or in bare land where surface plants have been lost due to man-made or natural disasters. Planting turfgrass by seeding was almost never practiced.

The purpose of the present invention is to provide a method for vegetating turfgrass on bare soil by actual sowing at a selected time, and also to ensure water retention in the cultivation bed and the rhizosphere after growth, thereby significantly saving water volume. Moreover, it is an object of the present invention to provide a method for revegetating bare land with turfgrass in a short period of time and with little labor.

Means for Solving the Problems The present invention involves cultivating the surface layer of bare land to a predetermined depth, adding slow-release fertilizer to form a topsoil layer, and then adding turfgrass seeds and partially cross-linked polyacrylamide on top of the topsoil layer. This is a method for growing turfgrass on bare land, which is characterized by spreading a vegetation zone containing a granular soil conditioner consisting of granular soil improver, and covering it with top soil to form a seeded cultivation bed.

The first step in the method of the present invention is to till the surface layer of bare soil to a predetermined depth and incorporate slow-release fertilizer to form a topsoil layer.

Bare land varies depending on soil conditions, climate conditions, the type of turfgrass, etc., but is at least 5 m above the ground surface, preferably 10 m above the ground surface.
Although it is necessary to till to a depth of 6 cm or more,
It is not necessarily necessary to have a depth of more than cm.

The tillage layer needs to contain the fertilizer necessary for the growing season, but use regular fertilizer and apply a large amount of fertilizer so that it remains until the growing season. (It is necessary to use a slow-release fertilizer that gradually releases fertilizer ingredients over time.)

As the slow-release fertilizer used in the present invention, a partially water-soluble urea-aldehyde condensate is suitable as a fertilizer containing a nitrogen component, and a dissolved phosphorus fertilizer, 3M phosphorus, and a molten phosphorus as a fertilizer containing a phosphorus component. , magnesia heavy sintered phosphorus, phosphate rock powder, bone powder, etc., and potassium silicate is preferable as one containing processed components. Each of these components may be applied singly or 1. You may fertilize by mixing.

The amount of each component to be applied is in the range of jO to /000 f per square meter, and the ratio of each component may be changed as appropriate within this range.

Adding slow-release fertilizer to the tilled layer 1: After spreading the fertilizer to the surface layer of the soil, tilling it and mixing it with the soil, or by spreading the fertilizer after tilling and mixing it. However, it is preferable to use a method that breaks down the fertilizer and mixes it with the soil.

In addition, a partially crosslinked polyacrylamide soil conditioner that is retained in the vegetation zone may be mixed with the slow-release fertilizer (in addition, humus such as compost may also be used).

The second step of the method of the present invention is to spread a vegetation zone on the topsoil layer formed as described above, and to form a seeded cultivation bed.

It is desirable that the vegetation belt used in the present invention has a tensile strength of a wide width, and particularly when the vegetation belt is mechanically spread, it should have a tensile strength of 5 to 3 occm or more. It is preferable that this vegetation zone holds turfgrass seeds and a granular partially cross-linked polyacrylamide soil conditioner. It has a remarkable feature of retention. Various soil conditioners have been developed in the past, such as cross-linked sodium polyacrylate,
Sodium polyacrylate and mixtures of both are known.

However, although it can be highly swollen by water, it has no water-holding capacity as available water on vegetation, or rainwater,
It has problems such as being easily dissolved and washed away by water spraying, etc. In contrast, partially cross-linked polyacrylamide
It has a high ability to form aggregates and is used as a soil conditioner in the present invention.

The granular partially cross-linked polyacrylamide soil conditioner used in the present invention has a part of the cross-linked insolubilized polymer and a part of the soluble polymer integrated in the particles (E-17"), so the soil conditioner is dissolved by dissolving part of the soluble polymer in water. It has a large agglomerate-forming ability (and because the degree of cross-linking of a portion of the unmineralized polymer is controlled, the flow rate of the polyacrylamide as a whole is slow (it has excellent water retention capacity as a house water source).

Such particulate partially crosslinked polyacrylamide can be obtained by heat treating polyacrylamide particles. The degree of crosslinking is 20 to 904 in terms of insolubilization degree. The temperature and time during the heat treatment vary depending on the composition, molecular weight, etc. of the polyacrylamide.

There are two types of polyacrylamide: nonionic and anionic. Generally, nonionic polyacrylamide is easier to crosslink than anionic polyacrylamide (20 to 170C, preferably 20 to 170C, because it crosslinks at a lower temperature and in a shorter time). Heat at 12θ~/!07: for about 60 minutes./70
7: With the above, it is difficult to immediately crosslink (insolubilize) and obtain a predetermined degree of insolubilization.In the case of 0 anionic polyacrylamide, the degree of insolubilization, which is almost the same as that of nonionic polyacrylamide, is 1! The partially crosslinked polyacrylamide used in the present invention can be obtained by increasing the heating time.

The vegetation zone used in the present invention has already been proposed by, for example, the inventors of the tree
27, 2'0/No.], turfgrass seeds and granular partially cross-linked polyacrylamide soil conditioner, or if necessary, further fertilizer are spread on a web formed from recycled cotton,
It can be obtained by superimposing a recycled cotton web thereon.

It is possible to spread the vegetation belt manually, but in order to fully utilize the features of the present invention, it is possible to spread the vegetation belt by pulling it out from a roll of vegetation while pulling it with a tractor or the like, and then using a machine. It is economical, and economical.

Moreover, it is advantageous to carry out this spreading of the vegetation zone mechanically, and in this case, the process of spreading the vegetation zone and simultaneously applying top soil on the expanded vegetation zone is a series of steps. These operations can be performed simultaneously. For example, a vine spreader that is pulled by a tractor or the like uses a rotary that can adjust the tilling depth to scrape off a predetermined amount of soil from the topsoil, and then spreads it on the spread vegetation strip at the rear. A mechanism for scattering the vegetation belt is provided, and the vegetation belt spreading mechanism is installed behind the rotary. This spreading mechanism inserts the roll of the vegetation belt into the rotating shaft, pulls out the vegetation belt, and spreads it under the rear presser roll. The structure will be laid down.

By this method, top soil is applied on the spread vegetation zone, but the amount is small (the amount that covers the entire surface of the vegetation zone is necessary, and the thickness is about 1-2 crn). After spraying, water should be applied.In the normal vegetation method, especially in hot and dry areas, water should be watered 1 to 2 times a day until germination, and once a day during the seedling stage after germination.
It is normal to water more than once, and reduce the frequency as the growth progresses, but in the present invention, watering is extremely small (1s/time during the germination period, every other day or more during the seedling stage, and at intervals of at least every other day during the growing season). Even fewer waterings are required.

Examples Below, the present invention will be explained in more detail with reference to examples.Example 1 A greenhouse with a temperature control of 3 OC during the day and 3 OC at night, with loam soil and soft soil with a total nitrogen content of 39 my Soil, total potassium 6irng/1ool - dry soil, total phosphorus 117m
9/ / OD g-soft soil, iron content 7220m9/l 0
0g - Soft soil, pHII, 90 soil at 3ocrr+
Anionic polyacrylamide particles with a molecular weight of 10 million yts were spread to a thickness of /, tilled to a depth of fα.
Insoluble gel fraction 3.2 granular partially cross-linked polyacrylamide soil conditioner obtained by heat treatment with OC for 20 minutes.
/ m”, partially water-soluble urea-aldehyde condensate slow-release fertilizer t iyo 51 / m” and park compost!
0? / m2 was again applied to a depth of 10 cm, and the surface was flattened by rolling out pressure.

On top of that, it’s eye-catching! Bermuda grass seeds 71 no/m2 on cotton strip of D no/m2, same partially water-soluble urea-aldehyde condensate slow-release fertilizer as above 10 no/m2, low-grade chemical fertilizer 3
0 no/m2. and the same granular partially cross-linked polyacrylamide soil improvement t'FIJ, 20? /rn2 was evenly spread, and the vegetation belt created by overlapping the cotton belt was spread on top of it.

The above soil was applied as a top layer to a thickness of about 1 cm on top of the spread vegetation zone.Water was sprinkled once every 7 days until germination for 30 minutes using a sprinkler.
When the seeds were tested for 2 days, they germinated from the 2nd day, and the germination rate was 90%. After 21 bites, the seedling period ended and the growing season began. Watering was done every 70 minutes, but growth was good.

On the other hand, when the granular partially cross-linked polyacrylamide soil conditioner and the partially water-soluble urea-aldehyde condensate slow-release fertilizer were not used, the watering amount was 30 mm to 0 mm twice a day, and although the seeds germinated from the 70th seed, What is the germination rate? After θ% of 1.2 days, the plants were watered twice in the morning and evening, but some of the plants gradually turned yellow and died.

Example 2 In the same greenhouse as Example 1, the soil was sandy loam, total nitrogen, 5
'm9/ / 00 f soft soil, pH gu, l soil jO
Spread it to a cm thickness, l! Till the soil to a depth of α, and apply a partially water-soluble urea-aldehyde condensate slow-release fertilizer to a depth of 00/m.
2, and 10 without spraying park compost 20/m2.
The soil was tilled to a depth of CIn and the surface was flattened.

On top of that, on a cotton strip with a basis weight of jOiI-/m2, bermudagrass seeds/j/m2 and the same slow-release fertilizer as above/O
J? / m2, low-grade chemical fertilizer 30 ji' / m2
, and a partially crosslinked polyacrylamide soil conditioner with an insoluble gel content of 4ti% obtained by heat-treating nonionic polyacrylamide particles with a molecular weight of 14 tOOOO for 70 minutes at i.go.72, and then uniformly spraying the above-mentioned A vegetation belt created by overlapping the same cotton belts was laid out. ``Then, when watering was carried out in the same manner as in the example process, germination occurred from the 70th seed, and the germination rate was 90%. After 27 days, the seedling period ended, and once the growing season started, watering was carried out every 7 days, but growth was good. When aldehyde condensate slow-release fertilizer was not used, watering was carried out with a sprinkler at a watering rate of 30 mm for 7 days.Although germination started from the 20th seedling, the germination rate was 50%. Although I watered the plants repeatedly, I noticed that some of them gradually turned yellow and died.

Effects of the Invention According to the present invention, by forming a seed cultivation bed for turfgrass vegetation, soil can be rapidly aggregated by water such as watering over a long period of time during the germination period, seedling period, and growing period. According to
Since effective moisture is secured and favorable pores are formed, it is possible to effectively green the bare ground with grass using a small amount of water. Especially when it is necessary to revegetate a large area of bare land, it can be done in a short time and with less labor.
Greening with turf grass can be carried out without significant restrictions on the timing of implementation. Therefore, the present invention is applicable not only to bare land where it has been difficult to grow plants, to bare land where surface plants have been lost naturally or artificially, but also to sports grounds,
It is also effectively applied to developed land.

Applicant Mitsubishi Rayon Engineering 4 and Aig Co., Ltd. Shin Nippon Ryokugaku Co., Ltd. Diaflock Co., Ltd. Procedure Amendment Zan Showa 3941 Tama September 6L Special Review Agency Director Manabu Shiga 1, Indication of the incident Showa! Special Review Application No. 1 Yuj 376 No. 9, 2003, Name of the invention: Method for planting turfgrass on bare land 3, Person making the amendment: 4, Agent address: 77 Minamiikebukuro 2-chome, Toshima-ku, Tokyo, 2-j No. (English building) 5,
Date of amendment order Voluntary amendment 6, Detailed explanation of the invention column 7 of the specification to be amended, Contents of the amendment (1) "The length of the diameter is sufficient to be about 2 cm" on page 9, line 19 of the specification, to j/mm - Approximately 7 m, preferably 7 m
It is better to set it to m. ” 0(2) Statement No. 1
Correct “no” in the first line of page 1 to “jmmj”0

Claims (4)

[Claims] (1) After tilling the surface layer of bare land to a predetermined depth and adding slow-release fertilizer to form a topsoil layer, a granular soil conditioner made of turfgrass seeds and partially cross-linked polyacrylamide is held on top of it. A method for planting turfgrass on bare land, which is characterized by spreading out a planted vegetation zone and covering it with top soil to form a seeded cultivation bed. (2) The method according to claim 1, in which a partially water-bathed urea-aldehyde condensate is used as the slow-release fertilizer. (3) The method according to claim 1, wherein a granular soil conditioner made of partially cross-linked polyacrylamide is contained in the topsoil layer together with a slow-release fertilizer. (4) The method according to claim 1, in which top soil is applied onto the vegetation zone at the same time as the vegetation zone is spread.