JPS6046923B2 - Seed spraying method using konnyaku powder - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides seeds for greening and protecting slopes such as bare land and bedrock made of inorganic and recessive soil that have been artificially created through civil engineering work. There are some related to improvements to the spraying method.

[Conventional technology]

The inventor of the present application previously provided a patented invention relating to a seed spraying method using flying powder of konjac in Japanese Patent No. 992813 (Japanese Patent Publication No. 54-1364).

As a result, pure vegetable-based konjac dust was used instead of chemical agents such as asphalt emulsion and urea-formaldehyde resin foam powder used in conventional spraying methods.
By forming a film on the surface layer of the slope, it was possible to prevent seeds and fibers from being scattered and washed away by wind and rain, and it also served as a slow-release fertilizer. Moreover, it has no irritating odor or strange odor, and is effective in preventing pollution such as environmental destruction caused by chemical damage. Furthermore, in the seed spraying method, an invention disclosed in Japanese Patent Publication No. 36-5765 is known in order to prevent erosion of the soil by rainwater, prevent bleeding of seeds, ensure that the seeds are easily established, and germinate uniformly. .

[Problem to be solved by the invention] By the way, the former patented invention creates a slurry by stirring and mixing konjac fly powder with seeds, fertilizer, and fibers in water, so the seeds are mixed with the slurry.

Therefore, the thickness of the sprayed layer using the slurry is usually about 1 to 3 mm, since no soil is added. On the other hand, if soil is added to the above-mentioned patented invention method and sprayed, if the thickness of the sprayed layer 3 is about 1 to 2 cm as shown in Figure 2, the seeds buried in the sprayed layer will also be normal. germinates in

However, the patented invention does not apply to slopes with extremely poor soil quality, such as slopes made of cut rock fragments created by excavating tunnels called zuri,
For greening slopes with extremely uneven ground surfaces, such as those found in hard rock cut-outs, it is necessary to increase the thickness of the sprayed layer that serves as the vegetation base.
It is necessary to make it thick around rL.

In this case, seeds buried near the surface of the sprayed layer will not have any problem with germination, but seeds buried in the middle or near the bottom of the sprayed layer will be difficult to germinate and may dry up. If it is too hot, the yield of seed growth will be poor. Furthermore, in the invention of Japanese Patent Publication No. 36-5765, since clay soil is used as the soil, when this is blown onto the ground surface with compressed air, the surface becomes hard and tile-like, and further drying becomes difficult. As the process progresses, the sprayed layer will begin to crack.

Furthermore, when compressed air is passed through the hose, the slurry becomes sticky and adheres to the inner surface of the hose, causing the amount of slurry to gradually decrease, making it impossible to convey it effectively over time. . [Means for Solving the Problems] The present invention solves the above-mentioned problems and also provides a method to ensure that the sprayed seeds will germinate no matter what kind of hard rock or rough ground the sprayed layer is applied to. In order to achieve the purpose of
The first step is to spray a slurry made of a mixture of mountain sand containing pumice, fertilizer, flying konjac powder, and water onto the slope to a thickness of at least 10G to form a vegetation base, and a second step in which seeds, fibers, This method consists of a second step of spraying a slurry made by mixing konjac powder and water onto the surface of the vegetation base to form a seed layer.

The reason why mountain sand is used as soil is that the soil has an appropriate three-phase distribution of solid, gas, and liquid phases. That is, an appropriate three-layer distribution generally consists of 40% solid phase, 30% gas phase, and 30% liquid phase.
This is the percentage of Mountain sand has coarse particles, and pumice has a diameter of 0.
It is preferable to select around 15 to 5 Tmm, and by sifting to exclude larger particles, this becomes a kind of aggregate, and when slurry is made, it is mixed between mountain sand and pumice. There is a slight gap in the air. Improves body circulation and water permeability.

Note that the porosity of pumice is approximately 70%. Konjac powder is a powder that is scattered from the stone mill when refining konjac flour from konnyaku potatoes and is not suitable as refined powder. The general ingredients (wt%) are as follows. The fertilizer contains granular solid highly chemical fertilizer and lime fertilizer.

Water 13.64 Crude protein 14.30 Crude fat
0.48 ash content
8.26 fiber
5.13 Soluble nitrogen-free substances
48.19 The above-mentioned flying powder is a powder,
It is also possible to apply this fly powder to a known granulator to form granules of any desired shape, such as spherical or cylindrical.

As a construction example of the present invention, for example, the thickness of the sprayed layer is 10 CW.
The composition per 100 sprayed areas is as follows.

(1) First step (vegetation base) Mountain sand containing pumice
20d fertilizer (granular solid/high chemical composition)
20k9) lime fertilizer
25kg Konjac powder (PM Saini registered trademark) 250kg water
2000-25001 (
2) 2nd process (seed layer) Seeds (Kentatsuki 31 Fesk and others) 2k9 fiber (wood fiber)
20k9 Konjac powder (PM Saini registered trademark) 50k9 water
400-5001 Next, an example of the construction process according to the present invention will be explained. First, floating stones and wood chips, etc. on the slope are removed, and soil, fertilizer, and konjac powder are poured into a known mortar spraying machine. Add water;
A highly viscous slurry is made by stirring and mixing, and this slurry is uniformly sprayed onto the slope surface by nozzle injection via the above-mentioned spraying machine and compressor to form a vegetation base 1 having a thickness of about WG.

Next, when the surface of the vegetation base 1 is dry to the extent that it will not be washed away even if the seeds are sprayed, the seeds, fibers, flying powder of konjac, and water are poured into a stirring tank and mixed to create a slurry with low viscosity. This is sprayed uniformly onto the surface of the vegetation base 1 to a thickness of 1 to 3 w0n while stirring using a known seed spraying machine.

〔Effect of the invention〕

Since the present invention has the above-mentioned configuration, the roots of plants can effectively take root on slopes with poor soil quality such as the surface of embankments, weathered rocks, soft rocks, and crushed rock embankments due to the thick sprayed layer of mountain sand. A vegetative base with sufficient nutrients for growth is obtained.

Since the thick layer of the vegetation base contains a large amount of flying powder of konjac, the viscosity effect of the vegetation base and stability of fixation to the ground are extremely good. The above-mentioned mountain sand has fine particles, and the particle size is 0.15~
57707! Due to the pumice selected to a certain degree, voids are created between each particle, allowing good gas circulation and moisture permeability, and solid phase and
The balance of the three-phase distribution of gas and liquid phases is maintained, and there is no fear that the sprayed layer will harden when dry, unlike clay.

In addition, the seed spray layer sprayed onto the surface of the vegetation base also contains konjac powder, so when sprayed onto the vegetation base, the adhesive force of the powder ensures that the seeds will not be washed away. To prevent.

In this case, because the fertilizer contains lime,
The hardening of the vegetation base containing flying powder is accelerated, and the second process of seed spraying can be done quickly and efficiently.

Since the present invention sprays seeds separately without mixing them with mountain sand, they settle on the surface of the vegetation base that has been sprayed to a thickness of about 10 cm, and almost all of the seeds germinate. Moreover, since the seeds germinate and take root within the vegetation base, the yield of seed growth is greatly improved. In addition, the flying konjac powder contained in both the vegetation base and the seed spraying layer provides adhesive strength and functions as a slow-release fertilizer. There is no need to spray chemical agents and cure the film. As a result, there is no irritating odor or strange odor characteristic of chemical agents, and there is no risk of staining surrounding buildings, structures, etc. when spraying.

Therefore, it is an extremely easy-to-handle construction method that does not cause pollution such as environmental destruction due to chemical damage, and has the effect of improving the workability of seed spraying on the slope, which is new and useful.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional side view showing a conventional embodiment. 1... Vegetation base, 2... Seed spray layer.

Claims (1)

[Claims] 1. The first step is to spray a slurry made of a mixture of mountain sand containing pumice, fertilizer, flying konjac powder, and water onto the slope to a thickness of around 10 cm to form a vegetation base;
A second step of spraying a slurry made of a mixture of fiber, konjac powder, and water onto the surface of the vegetation base to form a seed layer.
Seed spraying method using konjac powder, which is characterized by the following steps: