JP2578063B2 - Sustainable fertilizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long-lasting fertilizer which can maintain its fertilizing effect for a relatively long time.

[0002]

BACKGROUND OF THE INVENTION While soil corrodes and accumulates animal and plant remains, it is constantly being mineralized. Therefore, when the natural organic matter circulation is interrupted, the plant cannot be grown healthy unless the organic matter is appropriately applied. Accordingly, chemical fertilizers such as various organic fertilizers and nitrogen fertilizers are used.

[0003]

[0007] Nitrogen is necessary for the growth of plants, but is not necessary for the germination time and initial growth (about one week). However, many nitrogen fertilizers elute nitrogen components at a high concentration immediately after fertilization, and the fertilizer effect tends to decrease in a relatively short period of time.

[0004] However, it is desirable for some plants that the fertilizing effect be maintained for a relatively long time, and that such plants require a lot of topdressing. Increasing the number of topdressing increases the cost, and it is not easy to perform sufficient topdressing.

[0005] In the revegetation method on the slope, seeds are often used. However, depending on the seeds, the nitrogen component is too large and the fertilizer becomes excessive fertilizer.

The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a continuous fertilizer that has a low nitrogen elution at the beginning of spraying, has no fertilizer or burns, has a long-term fertilizing effect, and does not require long-term topdressing.

[0007]

According to the present invention, means for solving the above-mentioned problems are constituted as follows. That is, dimethylbenzyl is added to the biodegradable slow-release nitrogen fertilizer.
Blended with antibacterial agent containing ammonium chloride as active ingredient
Is characterized in that the composed.

[0008]

[Action] Dimethylbenzy is used for biodegradable slow-release nitrogen fertilizer.
By mixing the antibacterial agent containing luammonium chloride as an active ingredient, the activity of microorganisms in the soil is suppressed, the amount of nitrogen eluted at the beginning of fertilization is reduced, fertilizer and burns can be prevented, and the fertilizer effect is effectively maintained Ru can be. Also <br/>, in accordance with the fertilization condition, other fertilizers, water-retaining material, it may be mixed with soil improvement material, or the like.

[0009]

EXAMPLES Examples of the continuous fertilizer of the present invention will be described below in detail. Biodegradable slow-release nitrogen in this continuous fertilizer
A urea-based condensed polymer can be used as the raw fertilizer . This urea-based condensation polymer is powdery and 100 g
When containing 25g of pure nitrogen in the soil,
It is degraded by microorganisms, undergoes slow mineralization over a long period of several years or more, and releases a total of 25 g of nitrogen for plant growth as a result of eluting trace amounts of nitrogen. Examples of such urea-based condensation polymers include, for example, Michlea II, which is commercially available as a raw material for general molded products.
There is a product called [Nitto Chemical Industry Co., Ltd.].

The antimicrobial agent to be mixed with Micrea II is preferably octadecyldimethylbenzylammonium chloride, and commercially available Mekavinone SMB-85.
[Meisei Chemical Industry Co., Ltd.] can be employed. In the present embodiment, the ratio of mineralization of only Micrea II, which was obtained by mixing 85.2 mg of Mekabinone SMB-8 as total nitrogen to 200 mg of Micrea II, was used. A comparative experiment was carried out for, and favorable results as shown in Table 1 below could be obtained.

[0011]

[Table 1]

The experimental method will be described. An Arakida soil (air-dried 2 mm) containing 50% of the maximum water content in an infiltration tube is described.
Under) 200g and the surface of Micrea II
Only 200 mg (total nitrogen) or 2 in its Michlea II
mg of Mecabinone SMB-85 was sprayed, and the same soil was covered thereon. One month later, water was allowed to flow down from the upper part of the infiltration tube at a rate of 100 cc / day. Was measured.

As a result, it can be seen that the progress of mineralization is particularly suppressed until one or two months have passed, and that the antimicrobial agent has sufficiently exerted the effect of suppressing the activity of microorganisms. 3
After a lapse of months, the activity of microorganisms becomes active and mineralization becomes active, and nitrogen necessary for plants elutes into the soil.

By the way, as shown by the broken line in FIG. 2, the ideal elution amount of nitrogen for slope greening may be an extremely small elution amount in the first one to two months, and generally after three months. It is preferred that the mineralization is maintained continuously over a long period of time by continuing to elute a predetermined amount on average. However, as shown by the one-dot chain line, a large amount of nitrogen is eluted at the beginning of application of general nitrogen chemical fertilizers, and it is not sustainable and requires additional fertilization. On the other hand, the urea-based condensation polymer shown by the two-dot chain line has a relatively long fertilizing effect.

In the present continuous fertilizer, the dissolution of the urea-based condensed polymer is suppressed for one to two months by the addition of an antibacterial agent, and the rising gradient thereof is matched with the ideal dissolution curve as shown by the solid line in FIG. I was able to. By suppressing the initial elution amount, there is no fertilizer or inflammation, suitable conditions from germination to early growth can be formed, and the fertilizing effect can be maintained more than the urea-based condensation polymer alone, and it is more ideal. I was able to do it.

As the biodegradable chemical fertilizer, a slow-release nitrogen fertilizer is preferable. In addition to the above-mentioned urea-based condensation polymer, ureido nitrogen (ureaform, crotonylidene-niurea)
[CDU Chisso Corporation], guanidine nitrogen (guanyl urea), are preferred, such as shea Anamido nitrogen (calcium cyanamide).

[0017] Antimicrobial agents, antimicrobial agents and di-methyl benzyl ammonium chloride the active ingredient is suitable, for example, lauryl dimethyl benzyl ammonium chloride [Meirapitto V43, Meisei Chemical Works, Ltd.] be used as the it can.

It has been confirmed that a continuous fertilizer obtained by adding 0.1 to 4% of such an antibacterial agent to the above-mentioned slow-release nitrogen fertilizer has both good suppression of initial dissolution and long-term durability. ing. Further, a mixture of an antibacterial agent, a slow-release nitrogen fertilizer, and vermiculite or other general chemical fertilizers having an increasing amount and a water retention effect is also a good sustainable fertilizer.

[0019]

As described in detail above, according to the sustained- release fertilizer of the present invention , dimethyl cellulose is added to the biodegradable slow-release nitrogenous fertilizer.
By mixing an antimicrobial agent containing benzylammonium chloride as an active ingredient, the initial elution amount of nitrogen can be effectively suppressed, and even if applied in a large amount, germination disorders and growth disorders will not occur. There is no danger. In addition, even if seeds are planted from spring to summer, when the activity of microorganisms is active, the seeds can be germinated and grown soundly without fertilizer or burnt. Furthermore, it can be widely used by being appropriately mixed with other chemical fertilizers, water retention materials and the like according to the application conditions.

[Brief description of the drawings]

FIG. 1 is a graph showing changes in the amount of eluted nitrogen in one embodiment of the continuous fertilizer of the present invention in comparison with a urea-based condensed polymer and an ideal elution curve.

FIG. 2 is a graph showing general nitrogen chemical fertilizers and urea-based condensation polymers in comparison with ideal elution curves.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location C05C 9:02 11:00)

Claims (1)

(57) [Claims] Claims: 1. A biodegradable slow-release nitrogenous fertilizer,
A continuous fertilizer comprising a mixture of an antibacterial agent containing rubenzylammonium chloride as an active ingredient .